算法笔记学习心得

---恢复内容开始---

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">

<style>* {-webkit-tap-highlight-color: rgba(0,0,0,0);}html {-webkit-text-size-adjust: none;}body {font-family: -apple-system, Helvetica, Arial, sans-serif;margin: 0;padding: 20px;color: #333;word-wrap: break-word;}h1, h2, h3, h4, h5, h6 {line-height: 1.1;}img {max-width: 100% !important;height: auto;}blockquote {margin: 0;padding: 0 15px;color: #777;border-left: 4px solid #ddd;}hr {background-color: #ddd;border: 0;height: 1px;margin: 15px 0;}code {font-family: Menlo, Consolas, 'Ubuntu Mono', Monaco, 'source-code-pro', monospace;line-height: 1.4;margin: 0;padding: 0.2em 0;font-size: 90%;background-color: rgba(0,0,0,0.04);border-radius: 3px;}pre > code {margin: 0;padding: 0;font-size: 100%;word-break: normal;background: transparent;border: 0;}ol {list-style-type: decimal;}ol ol, ul ol {list-style-type: lower-latin;}ol ol ol, ul ol ol, ul ul ol, ol ul ol {list-style-type: lower-roman;}table {border-spacing: 0;border-collapse: collapse;margin-top: 0;margin-bottom: 16px;}table th {font-weight: bold;}table th, table td {padding: 6px 13px;border: 1px solid #ddd;}table tr {border-top: 1px solid #ccc;}table tr:nth-child(even) {background-color: #f8f8f8;}input[type="checkbox"] {cursor: default;margin-right: 0.5em;font-size: 13px;}.task-list-item {list-style-type: none;}.task-list-item+.task-list-item {margin-top: 3px;}.task-list-item input {float: left;margin: 0.3em 1em 0.25em -1.6em;vertical-align: middle;}#tag-field {margin: 8px 2px 10px;}#tag-field .tag {display: inline-block;background: #cadff3;border-radius: 4px;padding: 1px 8px;color: black;font-size: 12px;margin-right: 10px;line-height: 1.4;}</style>

<style>.ace_static_highlight {white-space: pre-wrap;}.ace_static_highlight .ace_gutter {width: 2em;text-align: right;padding: 0 3px 0 0;margin-right: 3px;}.ace_static_highlight.ace_show_gutter > .ace_line {padding-left: 2.6em;}.ace_static_highlight .ace_line {position: relative;}.ace_static_highlight .ace_gutter-cell {-moz-user-select: -moz-none;-khtml-user-select: none;-webkit-user-select: none;user-select: none;top: 0;bottom: 0;left: 0;position: absolute;}.ace_static_highlight .ace_gutter-cell:before {content: counter(ace_line, decimal);counter-increment: ace_line;}.ace_static_highlight {counter-reset: ace_line;}</style>
<style>.ace-tomorrow-night-eighties .ace_gutter {background: #272727;color: #CCC}.ace-tomorrow-night-eighties .ace_print-margin {width: 1px;background: #272727}.ace-tomorrow-night-eighties {background-color: #2D2D2D;color: #CCCCCC}.ace-tomorrow-night-eighties .ace_constant.ace_other,.ace-tomorrow-night-eighties .ace_cursor {color: #CCCCCC}.ace-tomorrow-night-eighties .ace_marker-layer .ace_selection {background: #515151}.ace-tomorrow-night-eighties.ace_multiselect .ace_selection.ace_start {box-shadow: 0 0 3px 0px #2D2D2D;}.ace-tomorrow-night-eighties .ace_marker-layer .ace_step {background: rgb(102, 82, 0)}.ace-tomorrow-night-eighties .ace_marker-layer .ace_bracket {margin: -1px 0 0 -1px;border: 1px solid #6A6A6A}.ace-tomorrow-night-bright .ace_stack {background: rgb(66, 90, 44)}.ace-tomorrow-night-eighties .ace_marker-layer .ace_active-line {background: #393939}.ace-tomorrow-night-eighties .ace_gutter-active-line {background-color: #393939}.ace-tomorrow-night-eighties .ace_marker-layer .ace_selected-word {border: 1px solid #515151}.ace-tomorrow-night-eighties .ace_invisible {color: #6A6A6A}.ace-tomorrow-night-eighties .ace_keyword,.ace-tomorrow-night-eighties .ace_meta,.ace-tomorrow-night-eighties .ace_storage,.ace-tomorrow-night-eighties .ace_storage.ace_type,.ace-tomorrow-night-eighties .ace_support.ace_type {color: #CC99CC}.ace-tomorrow-night-eighties .ace_keyword.ace_operator {color: #66CCCC}.ace-tomorrow-night-eighties .ace_constant.ace_character,.ace-tomorrow-night-eighties .ace_constant.ace_language,.ace-tomorrow-night-eighties .ace_constant.ace_numeric,.ace-tomorrow-night-eighties .ace_keyword.ace_other.ace_unit,.ace-tomorrow-night-eighties .ace_support.ace_constant,.ace-tomorrow-night-eighties .ace_variable.ace_parameter {color: #F99157}.ace-tomorrow-night-eighties .ace_invalid {color: #CDCDCD;background-color: #F2777A}.ace-tomorrow-night-eighties .ace_invalid.ace_deprecated {color: #CDCDCD;background-color: #CC99CC}.ace-tomorrow-night-eighties .ace_fold {background-color: #6699CC;border-color: #CCCCCC}.ace-tomorrow-night-eighties .ace_entity.ace_name.ace_function,.ace-tomorrow-night-eighties .ace_support.ace_function,.ace-tomorrow-night-eighties .ace_variable {color: #6699CC}.ace-tomorrow-night-eighties .ace_support.ace_class,.ace-tomorrow-night-eighties .ace_support.ace_type {color: #FFCC66}.ace-tomorrow-night-eighties .ace_heading,.ace-tomorrow-night-eighties .ace_markup.ace_heading,.ace-tomorrow-night-eighties .ace_string {color: #99CC99}.ace-tomorrow-night-eighties .ace_comment {color: #999999}.ace-tomorrow-night-eighties .ace_entity.ace_name.ace_tag,.ace-tomorrow-night-eighties .ace_entity.ace_other.ace_attribute-name,.ace-tomorrow-night-eighties .ace_meta.ace_tag,.ace-tomorrow-night-eighties .ace_variable {color: #F2777A}.ace-tomorrow-night-eighties .ace_indent-guide {background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAACCAYAAACZgbYnAAAAEklEQVQImWPQ09NrYAgMjP4PAAtGAwchHMyAAAAAAElFTkSuQmCC) right repeat-y}</style>

<style>
body{margin:0 auto;max-width:800px;line-height:1.4}
#nav{margin:5px 0 10px;font-size:15px}
#titlearea{border-bottom:1px solid #ccc;font-size:17px;padding:10px 0;}
#contentarea{font-size:15px;margin:16px 0}
.cell{outline:0;min-height:20px;margin:5px 0;padding:5px 0;}
.code-cell{font-family:Menlo,Consolas,'Ubuntu Mono',Monaco,'source-code-pro',monospace;font-size:12px;}
.latex-cell{white-space:pre-wrap;}
</style>

<style> .text-cell {font-size: 15px;}.code-cell {font-size: 12px;}.markdown-cell {font-size: 15px;}.latex-cell {font-size: 15px;}</style>
</head>
<body>

<div id="titlearea">
<h2>1/4 学习总结</h2>
</div>
<div id="contentarea"><div class="cell text-cell">1、测评结果：<div>AC——通过</div><div>CE——编译出错</div><div>WA——答案出错</div><div>TLE——运行超时</div><div>RE——运行出错</div><div>MLE——内存超限</div><div>PE——格式出错</div><div>OE——输出超限</div><div><br></div><div>2、cin、cout比scanf、printf费时，而且不能有限制，不能在同一个程序中使用cout和printf，会出错。</div><div><br></div><div>3、头文件</div><div>C中的stdio.h、string.h、math.h，在C++标准中，更推荐cstdio.h、cstring.h、cmath写法。eg，#include<stdio.h>——#include<cstdio></div><div><br></div><div>4、变量定义</div><div>a、变量的首字母必须是字母或是下划线</div><div>b、不能使用标识符</div><div>c、区分大小写</div><div><br></div><div>5、变量类型</div><div>整型</div><div>int</div><div><span style="color: rgb(221, 221, 221);">-2^ 31——2^31-1 (十亿)    -2*10^9~2*10^9       </span><br></div><div>long long</div><div>-2^63~2^63                        -9*10^18~9*10^18</div><div>浮点类型</div><div>float</div><div>-2^128~2^128                   实际精度6～7位</div><div>double                          </div><div>-2^1024~2^1024              世纪精度15～16位</div><div><span style="color: rgb(221, 221, 221);">字符型</span></div><div><font color="#cccccc"><span style="caret-color: rgb(204, 204, 204);">char</span></font></div><div><font color="#cccccc"><span style="caret-color: rgb(204, 204, 204);">-128～127</span></font></div><div><span style="color: rgb(221, 221, 221);">布尔型</span></div><div><span style="color: rgb(221, 221, 221);">bool  </span></div><div><font color="#cccccc"><span style="caret-color: rgb(204, 204, 204);">0（false） 1（true）</span></font></div><div><font color="#cccccc"><span style="caret-color: rgb(204, 204, 204);"><br></span></font></div><div><font color="#cccccc">6、long long类型</font></div><div><font color="#cccccc">赋值的初值要在后面加上LL  </font></div><div><font color="#cccccc">输入输出”%l64d"或是 “%lld” 【推荐</font>】</div><div><br></div><div>7、浮点类型</div><div>用 “%f"</div><div><br></div><div>8、char类型</div><div>字符常量必须用’ ‘引起来 </div><div>标准ASCII的范围为0～127 ，包括了控制字符、通信专用自负（不可显示）和常用的可显示字符，</div><div>0-9——48~57</div><div><span style="color: rgb(221, 221, 221);">A-Z——65~90</span><br></div><div>a-z——97～122</div><div><br></div><div>9、字符串常量</div><div>输入输出格式：”%s”</div><div><span style="color: rgb(221, 221, 221);">字符串常量是用双引号标记的字符集</span><br></div><div><span style="color: rgb(221, 221, 221);">不能把字符串常量赋值给字符变量</span><br></div><div>存储用字符数组</div><div><br></div><div>10、布尔类型</div><div>C中使用必须要加 #include<stdbool.h.></div><div>C++中可以中可以直接使用</div><div> </div></div><div class="cell code-cell"><div class="ace-tomorrow-night-eighties"><div class="ace_static_highlight ace_show_gutter" style="counter-reset:ace_line 0"><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_keyword">#include</span><span class="ace_constant ace_other"><stdio.h></span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_storage ace_type">int</span> <span class="ace_identifier">main</span><span class="ace_paren ace_lparen">(</span><span class="ace_paren ace_rparen">)</span><span class="ace_paren ace_lparen">{</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span><span class="ace_indent-guide"> </span> <span class="ace_storage ace_type">int</span> <span class="ace_identifier">a</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">b</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span> <span class="ace_support ace_function ace_C99 ace_c">scanf</span><span class="ace_paren ace_lparen">(</span><span class="ace_string ace_start">"</span><span class="ace_constant ace_language ace_escape">%d%d</span><span class="ace_string ace_end">"</span><span class="ace_punctuation ace_operator">,</span><span class="ace_keyword ace_operator">&</span><span class="ace_identifier">a</span><span class="ace_punctuation ace_operator">,</span><span class="ace_keyword ace_operator">&</span><span class="ace_identifier">b</span><span class="ace_paren ace_rparen">)</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span> <span class="ace_support ace_function ace_C99 ace_c">printf</span><span class="ace_paren ace_lparen">(</span><span class="ace_string ace_start">"</span><span class="ace_constant ace_language ace_escape">%d\n</span><span class="ace_string ace_end">"</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">a</span><span class="ace_keyword ace_operator">+</span><span class="ace_identifier">b</span><span class="ace_paren ace_rparen">)</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span> <span class="ace_keyword ace_control">return</span> <span class="ace_constant ace_numeric">0</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_paren ace_rparen">}</span>
</div></div></div></div><div class="cell code-cell"><div class="ace-tomorrow-night-eighties"><div class="ace_static_highlight ace_show_gutter" style="counter-reset:ace_line 0"><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_keyword">#include</span><span class="ace_constant ace_other"><stdio.h></span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_storage ace_type">int</span> <span class="ace_identifier">main</span><span class="ace_paren ace_lparen">(</span><span class="ace_paren ace_rparen">)</span><span class="ace_paren ace_lparen">{</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span> <span class="ace_storage ace_type">long</span> <span class="ace_storage ace_type">long</span> <span class="ace_identifier">bignum</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span> <span class="ace_identifier">bignum</span><span class="ace_keyword ace_operator">=</span><span class="ace_constant ace_numeric">22222222222ll</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span> <span class="ace_support ace_function ace_C99 ace_c">printf</span><span class="ace_paren ace_lparen">(</span><span class="ace_string ace_start">"</span><span class="ace_constant ace_language ace_escape">%l</span><span class="ace_string">ld</span><span class="ace_constant ace_language ace_escape">\n</span><span class="ace_string ace_end">"</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">bignum</span><span class="ace_paren ace_rparen">)</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span> <span class="ace_keyword ace_control">return</span> <span class="ace_constant ace_numeric">0</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_paren ace_rparen">}</span>
</div></div></div></div><div class="cell code-cell"><div class="ace-tomorrow-night-eighties"><div class="ace_static_highlight ace_show_gutter" style="counter-reset:ace_line 0"><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_keyword">#include</span><span class="ace_constant ace_other"><stdio.h></span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_storage ace_type">int</span> <span class="ace_identifier">main</span><span class="ace_paren ace_lparen">(</span><span class="ace_paren ace_rparen">)</span><span class="ace_paren ace_lparen">{</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span><span class="ace_indent-guide"> </span> <span class="ace_storage ace_type">char</span> <span class="ace_identifier">c1</span><span class="ace_keyword ace_operator">=</span><span class="ace_string">'z'</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">c2</span><span class="ace_keyword ace_operator">=</span><span class="ace_string">'j'</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">c3</span><span class="ace_keyword ace_operator">=</span><span class="ace_constant ace_numeric">117</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span><span class="ace_indent-guide"> </span> <span class="ace_support ace_function ace_C99 ace_c">printf</span><span class="ace_paren ace_lparen">(</span><span class="ace_string ace_start">"</span><span class="ace_constant ace_language ace_escape">%c%c%c\n</span><span class="ace_string ace_end">"</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">c1</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">c2</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">c3</span><span class="ace_paren ace_rparen">)</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span><span class="ace_indent-guide"> </span> <span class="ace_keyword ace_control">return</span> <span class="ace_constant ace_numeric">0</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_paren ace_rparen">}</span>
</div></div></div></div><div class="cell code-cell"><div class="ace-tomorrow-night-eighties"><div class="ace_static_highlight ace_show_gutter" style="counter-reset:ace_line 0"><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_keyword">#include</span><span class="ace_constant ace_other"><stdio.h></span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_storage ace_type">int</span> <span class="ace_identifier">main</span><span class="ace_paren ace_lparen">(</span><span class="ace_paren ace_rparen">)</span><span class="ace_paren ace_lparen">{</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span> <span class="ace_storage ace_type">char</span> <span class="ace_identifier">str1</span><span class="ace_paren ace_lparen">[</span><span class="ace_constant ace_numeric">25</span><span class="ace_paren ace_rparen">]</span><span class="ace_keyword ace_operator">=</span><span class="ace_string ace_start">"</span><span class="ace_string">I love one people</span><span class="ace_string ace_end">"</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span> <span class="ace_storage ace_type">char</span> <span class="ace_identifier">str2</span><span class="ace_paren ace_lparen">[</span><span class="ace_constant ace_numeric">25</span><span class="ace_paren ace_rparen">]</span><span class="ace_keyword ace_operator">=</span><span class="ace_string ace_start">"</span><span class="ace_string">but she don't love me!</span><span class="ace_string ace_end">"</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span> <span class="ace_support ace_function ace_C99 ace_c">printf</span><span class="ace_paren ace_lparen">(</span><span class="ace_string ace_start">"</span><span class="ace_constant ace_language ace_escape">%s</span><span class="ace_string">, </span><span class="ace_constant ace_language ace_escape">%s\n</span><span class="ace_string ace_end">"</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">str1</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">str2</span><span class="ace_paren ace_rparen">)</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_paren ace_rparen">}</span>
</div></div></div></div><div class="cell code-cell"><div class="ace-tomorrow-night-eighties"><div class="ace_static_highlight ace_show_gutter" style="counter-reset:ace_line 0"><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_keyword">#include</span><span class="ace_constant ace_other"><stdio.h></span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_storage ace_type">int</span> <span class="ace_identifier">main</span><span class="ace_paren ace_lparen">(</span><span class="ace_paren ace_rparen">)</span><span class="ace_paren ace_lparen">{</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span><span class="ace_indent-guide"> </span> <span class="ace_storage ace_type">bool</span> <span class="ace_identifier">flag1</span><span class="ace_keyword ace_operator">=</span><span class="ace_constant ace_numeric">0</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">flag2</span><span class="ace_keyword ace_operator">=</span><span class="ace_constant ace_numeric">1</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span><span class="ace_indent-guide"> </span> <span class="ace_support ace_function ace_C99 ace_c">printf</span><span class="ace_paren ace_lparen">(</span><span class="ace_string ace_start">"</span><span class="ace_constant ace_language ace_escape">%d</span><span class="ace_string"> </span><span class="ace_constant ace_language ace_escape">%d</span><span class="ace_string"> </span><span class="ace_constant ace_language ace_escape">%d\n</span><span class="ace_string ace_end">"</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">flag1</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">flag2</span><span class="ace_punctuation ace_operator">,</span><span class="ace_identifier">flag1</span><span class="ace_keyword ace_operator">==</span><span class="ace_identifier">flag2</span><span class="ace_paren ace_rparen">)</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_indent-guide"> </span><span class="ace_indent-guide"> </span> <span class="ace_keyword ace_control">return</span> <span class="ace_constant ace_numeric">0</span><span class="ace_punctuation ace_operator">;</span>
</div><div class="ace_line"><span class="ace_gutter ace_gutter-cell" unselectable="on"></span><span class="ace_paren ace_rparen">}</span>
</div></div></div></div></div>
<script></script>
</body>
</html>

---恢复内容结束---

算法笔记学习 心得

猜你喜欢

算法笔记学习心得