Merge branch 'master' of https://bdgit.educoder.net/pe3l754au/C1

2 years ago · f99db1e159
parent 0714c3a537 e4cb08cfcf
commit f99db1e159
9 changed files with 488 additions and 1 deletions
--- a/README.md
+++ b/README.md
@ -238,4 +238,81 @@ a: No such file or directory
 数据（query_data）、添加数据（add_data）、更新数据（update_data）、删除数据
 （delete_data）、数据排序（sort_data）和生成图表（make_chart）等子模块。其中查询、添加、更
 新和删除数据还会用到根据编号查询数据的方法（find）。  
-
+上述各模块通过主程序（main）进行调用，系统模块图如下。
+![](main.svg)
+各模块的主要功能如下：
+### main
+系统主函数模块，显示菜单，根据用户选择的菜单命令，执行相关操作。
+### init
+系统初始化。 
+### display_menu
+显示菜单命令。
+## 详细设计
+针对概要设计
+### main
+```
+Step 1: 初始化 
+Step 2: 根据用户选择的命令执行对应的操作 
+Step 2.1: 显示菜单 
+Step 2.2: 选择菜单命令 c 
+Step 2.3: if c == CMD_READ then 读取数据 
+Step 2.4: if c == CMD_SAVE then 保存数据 
+Step 2.5: if c == CMD_PRINT then 打印数据 
+Step 2.6: 
+```
+![](main.svg)
+### save_data
+```
+Step 1: 输入文件名
+Step 2: 打开文件
+Step 3: if 打开文件失败 then 提示打开文件失败并结束
+Step 4: 将所有库存记录写入文件
+Step 5: 关闭文件
+```
+![](save_data.svg)
+### print_data
+```
+Step 1: for 0 to num_part-1
+Step 2: 打印学生成绩
+```
+![](print_data.svg)
+### query_data
+```
+Step 1:  for 0 to num_part-1 查询
+Step 2:  输入查询学号
+Step 3: 根据查询结果输出
+```
+![](query_data.svg)
+### add_data
+```
+Step 1: for 0 to num_part-1 添加
+Step 2: 输入添加学号
+Step 3: if 成立则结束 else 输入学生名称、名次，添加分数， 并提示完成
+```
+![](add_data.svg)
+### update_data
+```
+Step 1: for 0 to num_part-1 修改
+Step 2: 输入修改学号
+Step 3: if 不成立则结束 else 输出学生信息
+```
+![](update_data.svg)
+### delete_data
+```
+Step 1: for 0 to num_part-1 删除
+Step 2: 输入删除学号
+Step 3: if 不成立则结束 else 删除
+```
+![](delete_data.svg)
+### sort_data
+```
+Step 1: for 0 to num_part-1 排序
+Step 2: 按学生学号从小到大排序
+```
+![](sort_data.svg)
+### make_chart
+```
+Step 1: Step 1: for 0 to num_part-1 图表
+Step 2: 以图表方式显示库存记录
+```
+![](make_chart.svg)
--- a/delete_data.drawio.svg
+++ b/delete_data.drawio.svg
@ -0,0 +1,180 @@
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+                            </div>
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+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 200px; margin-left: 26px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
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+                                输入学号
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
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+                </text>
+            </switch>
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+        <g transform="translate(-0.5 -0.5)">
+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 168px; height: 1px; padding-top: 340px; margin-left: 1px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                学号存在?
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="85" y="344" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    学号存在?
+                </text>
+            </switch>
+        </g>
+        <path d="M 85 530 L 85 643.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
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+        <path d="M 10 530 L 30 470 L 160 470 L 140 530 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <g transform="translate(-0.5 -0.5)">
+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 148px; height: 1px; padding-top: 500px; margin-left: 11px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                学号不存在
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
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+                    学号不存在
+                </text>
+            </switch>
+        </g>
+        <path d="M 325 370 L 325 443.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 325 448.88 L 321.5 441.88 L 325 443.63 L 328.5 441.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 265 370 L 285 310 L 385 310 L 365 370 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
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+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 340px; margin-left: 266px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                删除学生信息
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="325" y="344" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
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+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 315px; margin-left: 230px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">
+                                Y
+                            </div>
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+                    </div>
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+                <text x="230" y="319" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
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+        <rect x="45" y="400" width="30" height="30" fill="none" stroke="none" pointer-events="all"/>
+        <g transform="translate(-0.5 -0.5)">
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+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 1px; height: 1px; padding-top: 415px; margin-left: 60px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: nowrap;">
+                                X
+                            </div>
+                        </div>
+                    </div>
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+                <text x="60" y="419" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    X
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+            </switch>
+        </g>
+        <path d="M 265 510 L 285 450 L 385 450 L 365 510 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <g transform="translate(-0.5 -0.5)">
+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 480px; margin-left: 266px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                已更新
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="325" y="484" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
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+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 108px; height: 1px; padding-top: 690px; margin-left: 31px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                结束
+                            </div>
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+    </g>
+    <switch>
+        <g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/>
+        <a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank">
+            <text text-anchor="middle" font-size="10px" x="50%" y="100%">
+                Text is not SVG - cannot display
+            </text>
+        </a>
+    </switch>
+</svg>
--- a/delete_data.svg
+++ b/delete_data.svg
--- a/make_chart.drawio.svg
+++ b/make_chart.drawio.svg
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+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 40px; margin-left: 1px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                make_chart
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="60" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    make_chart
+                </text>
+            </switch>
+        </g>
+        <path d="M 60 230 L 60 303.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 308.88 L 56.5 301.88 L 60 303.63 L 63.5 301.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 0 230 L 20 170 L 120 170 L 100 230 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <g transform="translate(-0.5 -0.5)">
+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 200px; margin-left: 1px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                读取文件
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="60" y="204" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    读取文件
+                </text>
+            </switch>
+        </g>
+        <path d="M 60 370 L 60 433.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 438.88 L 56.5 431.88 L 60 433.63 L 63.5 431.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 0 370 L 20 310 L 120 310 L 100 370 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <g transform="translate(-0.5 -0.5)">
+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 340px; margin-left: 1px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                显示文件
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="60" y="344" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    显示文件
+                </text>
+            </switch>
+        </g>
+        <ellipse cx="60" cy="480" rx="60" ry="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <g transform="translate(-0.5 -0.5)">
+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 480px; margin-left: 1px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                结束
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="60" y="484" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    结束
+                </text>
+            </switch>
+        </g>
+    </g>
+    <switch>
+        <g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/>
+        <a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank">
+            <text text-anchor="middle" font-size="10px" x="50%" y="100%">
+                Text is not SVG - cannot display
+            </text>
+        </a>
+    </switch>
+</svg>
--- a/make_chart.svg
+++ b/make_chart.svg
--- a/sort_data.drawio.svg
+++ b/sort_data.drawio.svg
@ -0,0 +1,87 @@
+<svg host="65bd71144e" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="121px" height="521px" viewBox="-0.5 -0.5 121 521" content="&lt;mxfile&gt;&lt;diagram id=&quot;yjX7MxzQul6X_D35qJ4Z&quot; name=&quot;Page-1&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;">
+    <defs/>
+    <g>
+        <path d="M 60 80 L 60 163.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 168.88 L 56.5 161.88 L 60 163.63 L 63.5 161.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <ellipse cx="60" cy="40" rx="60" ry="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <g transform="translate(-0.5 -0.5)">
+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 40px; margin-left: 1px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                sort_data
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="60" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    sort_data
+                </text>
+            </switch>
+        </g>
+        <path d="M 60 230 L 60 303.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 308.88 L 56.5 301.88 L 60 303.63 L 63.5 301.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 0 230 L 20 170 L 120 170 L 100 230 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <g transform="translate(-0.5 -0.5)">
+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 200px; margin-left: 1px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                读取文件
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="60" y="204" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    读取文件
+                </text>
+            </switch>
+        </g>
+        <path d="M 60 370 L 60 433.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
+        <path d="M 60 438.88 L 56.5 431.88 L 60 433.63 L 63.5 431.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <path d="M 0 370 L 20 310 L 120 310 L 100 370 Z" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/>
+        <g transform="translate(-0.5 -0.5)">
+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 340px; margin-left: 1px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                排序
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="60" y="344" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    排序
+                </text>
+            </switch>
+        </g>
+        <ellipse cx="60" cy="480" rx="60" ry="40" fill="rgb(255, 255, 255)" stroke="rgb(0, 0, 0)" pointer-events="all"/>
+        <g transform="translate(-0.5 -0.5)">
+            <switch>
+                <foreignObject pointer-events="none" width="100%" height="100%" requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility" style="overflow: visible; text-align: left;">
+                    <div xmlns="http://www.w3.org/1999/xhtml" style="display: flex; align-items: unsafe center; justify-content: unsafe center; width: 118px; height: 1px; padding-top: 480px; margin-left: 1px;">
+                        <div data-drawio-colors="color: rgb(0, 0, 0); " style="box-sizing: border-box; font-size: 0px; text-align: center;">
+                            <div style="display: inline-block; font-size: 12px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; white-space: normal; overflow-wrap: normal;">
+                                排序完成
+                            </div>
+                        </div>
+                    </div>
+                </foreignObject>
+                <text x="60" y="484" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
+                    排序完成
+                </text>
+            </switch>
+        </g>
+    </g>
+    <switch>
+        <g requiredFeatures="http://www.w3.org/TR/SVG11/feature#Extensibility"/>
+        <a transform="translate(0,-5)" xlink:href="https://www.diagrams.net/doc/faq/svg-export-text-problems" target="_blank">
+            <text text-anchor="middle" font-size="10px" x="50%" y="100%">
+                Text is not SVG - cannot display
+            </text>
+        </a>
+    </switch>
+</svg>
--- a/sort_data.svg
+++ b/sort_data.svg
--- a/update_data.drawio
+++ b/update_data.drawio
@ -0,0 +1,52 @@
+<mxfile host="65bd71144e">
+    <diagram id="5al8SiqKVGW9Og6V7Dn-" name="第 1 页">
+        <mxGraphModel dx="487" dy="568" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="850" pageHeight="1100" math="0" shadow="0">
+            <root>
+                <mxCell id="0"/>
+                <mxCell id="1" parent="0"/>
+                <mxCell id="4" value="" style="edgeStyle=none;html=1;" edge="1" parent="1" source="2" target="3">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="2" value="update_data" style="ellipse;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+                    <mxGeometry x="310" y="120" width="110" height="70" as="geometry"/>
+                </mxCell>
+                <mxCell id="6" value="" style="edgeStyle=none;html=1;" edge="1" parent="1" source="3" target="5">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="8" value="" style="edgeStyle=none;html=1;" edge="1" parent="1" source="3" target="7">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="3" value="输入学号" style="whiteSpace=wrap;html=1;" vertex="1" parent="1">
+                    <mxGeometry x="305" y="275" width="120" height="60" as="geometry"/>
+                </mxCell>
+                <mxCell id="13" value="" style="edgeStyle=none;html=1;" edge="1" parent="1" source="5" target="12">
+                    <mxGeometry relative="1" as="geometry"/>
+                </mxCell>
+                <mxCell id="5" value="输入姓名，成绩" style="whiteSpace=wrap;html=1;" vertex="1" parent="1">
+                    <mxGeometry x="305" y="415" width="120" height="60" as="geometry"/>
+                </mxCell>
+                <mxCell id="7" value="学生不存在" style="whiteSpace=wrap;html=1;" vertex="1" parent="1">
+                    <mxGeometry x="505" y="275" width="120" height="60" as="geometry"/>
+                </mxCell>
+                <mxCell id="12" value="结束" style="ellipse;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+                    <mxGeometry x="325" y="545" width="80" height="45" as="geometry"/>
+                </mxCell>
+                <mxCell id="14" value="" style="edgeStyle=none;orthogonalLoop=1;jettySize=auto;html=1;exitX=0.5;exitY=1;exitDx=0;exitDy=0;" edge="1" parent="1" source="7">
+                    <mxGeometry width="100" relative="1" as="geometry">
+                        <mxPoint x="570" y="390" as="sourcePoint"/>
+                        <mxPoint x="370" y="520" as="targetPoint"/>
+                        <Array as="points">
+                            <mxPoint x="565" y="520"/>
+                        </Array>
+                    </mxGeometry>
+                </mxCell>
+                <mxCell id="15" value="Y" style="text;html=1;align=center;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;" vertex="1" parent="1">
+                    <mxGeometry x="335" y="355" width="30" height="30" as="geometry"/>
+                </mxCell>
+                <mxCell id="16" value="N" style="text;html=1;align=center;verticalAlign=middle;resizable=0;points=[];autosize=1;strokeColor=none;fillColor=none;" vertex="1" parent="1">
+                    <mxGeometry x="445" y="265" width="30" height="30" as="geometry"/>
+                </mxCell>
+            </root>
+        </mxGraphModel>
+    </diagram>
+</mxfile>
--- a/update_data.svg
+++ b/update_data.svg