diff --git a/README.md b/README.md
index 8423103..f559949 100644
--- a/README.md
+++ b/README.md
@@ -416,7 +416,7 @@ Step 3: if 没有该图书then 则输出图书不存在
 Step 4: 将查找到的图书后面的依次往前移动信息
 Step 5: 将图书总数减一
 Step 6: 提示删除成功
-![打印记录流程图](images/delete_data.drawio.svg)
+![打印记录流程图](deletesortupdate.svg)
 
 
 #### sort_data
diff --git a/deletesortupdate.svg b/deletesortupdate.svg
index f6ff26b..0d3ed5d 100644
--- a/deletesortupdate.svg
+++ b/deletesortupdate.svg
@@ -1 +1 @@
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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: 180px; margin-left: 1px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: #e20303; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(226, 3, 3); white-space: normal; overflow-wrap: normal;"><span style="background-color: rgb(13, 13, 13);">输入图书编号</span></div></div></div></foreignObject><text x="60" y="185" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="16px" text-anchor="middle">输入图书编号</text></switch></g><path d="M 60 310 L 60 353.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 60 358.88 L 56.5 351.88 L 60 353.63 L 63.5 351.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 120 280 L 194.15 311.78" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 198.97 313.85 L 191.16 314.3 L 194.15 311.78 L 193.92 307.87 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="250" 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: 280px; margin-left: 1px;"><div data-drawio-colors="color: #FF0000; background-color: #0d0d0d; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(13, 13, 13); white-space: normal; overflow-wrap: normal;"><font color="#ffffff">查找图书所在位置</font></div></div></div></foreignObject><text x="60" y="285" fill="#FF0000" font-family="Helvetica" font-size="16px" text-anchor="middle">查找图书所在位置</text></switch></g><path d="M 60 420 L 60 443.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 60 448.88 L 56.5 441.88 L 60 443.63 L 63.5 441.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="360" 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: 390px; margin-left: 1px;"><div data-drawio-colors="color: #FFFFFF; background-color: #0d0d0d; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; background-color: rgb(13, 13, 13); white-space: normal; overflow-wrap: normal;">删除该图书信息</div></div></div></foreignObject><text x="60" y="395" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">删除该图书信息</text></switch></g><rect x="200" y="310" 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: 340px; margin-left: 201px;"><div data-drawio-colors="color: #FFFFFF; background-color: #0d0d0d; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; background-color: rgb(13, 13, 13); white-space: normal; overflow-wrap: normal;">输出该图书不存在</div></div></div></foreignObject><text x="260" y="345" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">输出该图书不存在</text></switch></g><rect x="35" y="315" width="30" height="30" fill="none" stroke="none" 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: 1px; height: 1px; padding-top: 330px; margin-left: 50px;"><div data-drawio-colors="color: #FFFFFF; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: nowrap;">Y</div></div></div></foreignObject><text x="50" y="335" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">Y</text></switch></g><rect x="140" y="265" width="40" height="30" fill="none" stroke="none" 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: 1px; height: 1px; padding-top: 280px; margin-left: 160px;"><div data-drawio-colors="color: #FFFFFF; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: nowrap;">N</div></div></div></foreignObject><text x="160" y="285" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">N</text></switch></g><path d="M 60 510 L 60 523.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 60 528.88 L 56.5 521.88 L 60 523.63 L 63.5 521.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="450" 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: 480px; margin-left: 1px;"><div data-drawio-colors="color: #FFFFFF; background-color: #0d0d0d; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; background-color: rgb(13, 13, 13); white-space: normal; overflow-wrap: normal;">图书总数减一</div></div></div></foreignObject><text x="60" y="485" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">图书总数减一</text></switch></g><rect x="0" y="530" 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: 560px; margin-left: 1px;"><div data-drawio-colors="color: #FFFFFF; background-color: #0d0d0d; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; background-color: rgb(13, 13, 13); white-space: normal; overflow-wrap: normal;">提示删除成功</div></div></div></foreignObject><text x="60" y="565" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">提示删除成功</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
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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;"><font style="font-size: 16px;" color="#ff0000">delete_data</font></div></div></div></foreignObject><text x="60" y="44" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="12px" text-anchor="middle">delete_data</text></switch></g><path d="M 60 210 L 60 243.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 60 248.88 L 56.5 241.88 L 60 243.63 L 63.5 241.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="150" 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: 180px; margin-left: 1px;"><div data-drawio-colors="color: rgb(0, 0, 0); background-color: #e20303; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(0, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(226, 3, 3); white-space: normal; overflow-wrap: normal;"><span style="background-color: rgb(13, 13, 13);">输入图书编号</span></div></div></div></foreignObject><text x="60" y="185" fill="rgb(0, 0, 0)" font-family="Helvetica" font-size="16px" text-anchor="middle">输入图书编号</text></switch></g><path d="M 60 310 L 60 353.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 60 358.88 L 56.5 351.88 L 60 353.63 L 63.5 351.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><path d="M 120 280 L 194.15 311.78" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 198.97 313.85 L 191.16 314.3 L 194.15 311.78 L 193.92 307.87 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="250" 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: 280px; margin-left: 1px;"><div data-drawio-colors="color: #FF0000; background-color: #0d0d0d; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 0, 0); line-height: 1.2; pointer-events: all; background-color: rgb(13, 13, 13); white-space: normal; overflow-wrap: normal;"><font color="#ffffff">查找图书所在位置</font></div></div></div></foreignObject><text x="60" y="285" fill="#FF0000" font-family="Helvetica" font-size="16px" text-anchor="middle">查找图书所在位置</text></switch></g><path d="M 60 420 L 60 443.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 60 448.88 L 56.5 441.88 L 60 443.63 L 63.5 441.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="360" 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: 390px; margin-left: 1px;"><div data-drawio-colors="color: #FFFFFF; background-color: #0d0d0d; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; background-color: rgb(13, 13, 13); white-space: normal; overflow-wrap: normal;">删除该图书信息</div></div></div></foreignObject><text x="60" y="395" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">删除该图书信息</text></switch></g><rect x="200" y="310" 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: 340px; margin-left: 201px;"><div data-drawio-colors="color: #FFFFFF; background-color: #0d0d0d; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; background-color: rgb(13, 13, 13); white-space: normal; overflow-wrap: normal;">输出该图书不存在</div></div></div></foreignObject><text x="260" y="345" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">输出该图书不存在</text></switch></g><rect x="35" y="315" width="30" height="30" fill="none" stroke="none" 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: 1px; height: 1px; padding-top: 330px; margin-left: 50px;"><div data-drawio-colors="color: #FFFFFF; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: nowrap;">Y</div></div></div></foreignObject><text x="50" y="335" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">Y</text></switch></g><rect x="140" y="265" width="40" height="30" fill="none" stroke="none" 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: 1px; height: 1px; padding-top: 280px; margin-left: 160px;"><div data-drawio-colors="color: #FFFFFF; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; white-space: nowrap;">N</div></div></div></foreignObject><text x="160" y="285" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">N</text></switch></g><path d="M 60 510 L 60 523.63" fill="none" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="stroke"/><path d="M 60 528.88 L 56.5 521.88 L 60 523.63 L 63.5 521.88 Z" fill="rgb(0, 0, 0)" stroke="rgb(0, 0, 0)" stroke-miterlimit="10" pointer-events="all"/><rect x="0" y="450" 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: 480px; margin-left: 1px;"><div data-drawio-colors="color: #FFFFFF; background-color: #0d0d0d; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; background-color: rgb(13, 13, 13); white-space: normal; overflow-wrap: normal;">图书总数减一</div></div></div></foreignObject><text x="60" y="485" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">图书总数减一</text></switch></g><rect x="0" y="530" 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: 560px; margin-left: 1px;"><div data-drawio-colors="color: #FFFFFF; background-color: #0d0d0d; " style="box-sizing: border-box; font-size: 0px; text-align: center;"><div style="display: inline-block; font-size: 16px; font-family: Helvetica; color: rgb(255, 255, 255); line-height: 1.2; pointer-events: all; background-color: rgb(13, 13, 13); white-space: normal; overflow-wrap: normal;">提示删除成功</div></div></div></foreignObject><text x="60" y="565" fill="#FFFFFF" font-family="Helvetica" font-size="16px" text-anchor="middle">提示删除成功</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>
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