diff --git a/graph/increase_count.drawio.svg b/graph/increase_count.drawio.svg
deleted file mode 100644
index aa0da0a..0000000
--- a/graph/increase_count.drawio.svg
+++ /dev/null
@@ -1,120 +0,0 @@
-<svg host="65bd71144e" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="311px" height="651px" viewBox="-0.5 -0.5 311 651" content="&lt;mxfile&gt;&lt;diagram id=&quot;Va4TygbyCzQj2krgmKHs&quot; name=&quot;第 1 页&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;">
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-    <g>
-        <path d="M 150 170 L 150 80" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 150 310 L 150 230" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <rect x="90" y="310" width="120" height="60" rx="9" ry="9" 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: 340px; margin-left: 91px;">
-                        <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;">
-                                定义数组用于id比对
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="150" y="344" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    定义数组用于id比对
-                </text>
-            </switch>
-        </g>
-        <path d="M 150 460 L 150 370" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <rect x="90" y="460" width="120" height="60" rx="9" ry="9" 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: 490px; margin-left: 91px;">
-                        <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;">
-                                输入id进行比对
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="150" y="494" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    输入id进行比对
-                </text>
-            </switch>
-        </g>
-        <path d="M 207.52 589.82 L 195.07 568.62 Q 190 560 185.18 551.24 L 168 520" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <rect x="0" y="590" width="120" height="60" rx="9" ry="9" 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: 620px; 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;">
-                                若没有则返回信息
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="60" y="624" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    若没有则返回信息
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-            </switch>
-        </g>
-        <rect x="190" y="590" width="120" height="60" rx="9" ry="9" 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: 620px; margin-left: 191px;">
-                        <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;">
-                                若有则通过链表修改信息
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="250" y="624" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    若有则通过链表修改信息
-                </text>
-            </switch>
-        </g>
-        <ellipse cx="150" 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: 91px;">
-                        <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;">
-                                修改模块
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="150" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    修改模块
-                </text>
-            </switch>
-        </g>
-        <path d="M 80 590 L 94.45 568.32 Q 100 560 105.81 551.86 L 128.57 520" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <path d="M 150 170 L 235 210 L 150 250 L 65 210 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: 168px; height: 1px; padding-top: 210px; margin-left: 66px;">
-                        <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;">
-                                判断指针并返回信息
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="150" y="214" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    判断指针并返回信息
-                </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>
\ No newline at end of file
diff --git a/graph/insert.drawio.svg b/graph/insert.drawio.svg
deleted file mode 100644
index 084e7de..0000000
--- a/graph/insert.drawio.svg
+++ /dev/null
@@ -1,102 +0,0 @@
-<svg host="65bd71144e" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" version="1.1" width="341px" height="481px" viewBox="-0.5 -0.5 341 481" content="&lt;mxfile&gt;&lt;diagram id=&quot;kVJqyZt4jpgCLin7oq8k&quot; name=&quot;第 1 页&quot;&gt;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&lt;/diagram&gt;&lt;/mxfile&gt;">
-    <defs/>
-    <g>
-        <path d="M 170 140 L 170 50" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <rect x="0" y="295" width="120" height="60" rx="9" ry="9" 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: 325px; 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;">
-                                不存在返回error
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="60" y="329" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    不存在返回error
-                </text>
-            </switch>
-        </g>
-        <path d="M 280 420 L 280 360" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <rect x="220" y="420" width="120" height="60" 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: 450px; margin-left: 221px;">
-                        <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;">
-                                输入结束返回ok
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="280" y="454" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    输入结束返回ok
-                </text>
-            </switch>
-        </g>
-        <ellipse cx="170" 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: 111px;">
-                        <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;">
-                                添加模块
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="170" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    添加模块
-                </text>
-            </switch>
-        </g>
-        <path d="M 170 140 L 240 180 L 170 220 L 100 180 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: 138px; height: 1px; padding-top: 180px; margin-left: 101px;">
-                        <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;">
-                                判断链表是否存在
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="170" y="184" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    判断链表是否存在
-                </text>
-            </switch>
-        </g>
-        <path d="M 60 295 L 170 220" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-        <rect x="220" y="300" width="120" height="60" rx="9" ry="9" 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: 330px; margin-left: 221px;">
-                        <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;">
-                                存在则头插法输入数据
-                            </div>
-                        </div>
-                    </div>
-                </foreignObject>
-                <text x="280" y="334" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">
-                    存在则头插法输入数据
-                </text>
-            </switch>
-        </g>
-        <path d="M 272.8 301.2 L 170 220" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/>
-    </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>
\ No newline at end of file
diff --git a/graph/readData.drawio.svg b/graph/readData.drawio.svg
deleted file mode 100644
index e69de29..0000000