排列数和组合数计算器

PangXitong · Apr 20, 2024 · 4d61045 · 4d61045
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diff --git a/blog/tool/.DS_Store b/blog/tool/.DS_Store
diff --git a/blog/tool/AC.html b/blog/tool/AC.html
@@ -0,0 +1,69 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+<meta charset="UTF-8">
+<meta name="viewport" content="width=device-width, initial-scale=1.0">
+<title>排列数和组合数计算器</title>
+<style>
+  body {
+    font-family: Arial, sans-serif;
+    margin: 20px;
+  }
+  input[type="number"] {
+    width: 100px;
+    margin-right: 10px;
+  }
+  button {
+    padding: 10px 20px;
+    background-color: #007bff;
+    color: #fff;
+    border: none;
+    cursor: pointer;
+  }
+</style>
+</head>
+<body>
+<h2>排列数和组合数计算器</h2>
+<div>
+  <label for="n">总数 (n):</label>
+  <input type="number" id="n">
+</div>
+<div>
+  <label for="r">选取数量 (r):</label>
+  <input type="number" id="r">
+</div>
+<button onclick="calculatePermutation()">计算排列数</button>
+<button onclick="calculateCombination()">计算组合数</button>
+<div id="result"></div>
+
+<script>
+function calculatePermutation() {
+  var n = parseInt(document.getElementById('n').value);
+  var r = parseInt(document.getElementById('r').value);
+
+  var permutation = factorial(n) / factorial(n - r);
+
+  document.getElementById('result').innerHTML = '排列数 (P): ' + permutation;
+}
+
+function calculateCombination() {
+  var n = parseInt(document.getElementById('n').value);
+  var r = parseInt(document.getElementById('r').value);
+
+  var combination = factorial(n) / (factorial(r) * factorial(n - r));
+
+  document.getElementById('result').innerHTML = '组合数 (C): ' + combination;
+}
+
+function factorial(num) {
+  if (num === 0 || num === 1) {
+    return 1;
+  }
+  for (var i = num - 1; i >= 1; i--) {
+    num *= i;
+  }
+  return num;
+}
+</script>
+</body>
+</html>
diff --git a/blog/tool/ToolList.html b/blog/tool/ToolList.html
@@ -136,6 +136,11 @@ <h1>工具列表</h1>
                 <a href="./Calculator/index.html">科学计算器</a>
                 <p class="description">开源科学计算器<a target="_blank" href="https://github.com/PitPik/CalcSS3">CalcSS3</a>(2024.3.23)</p>
             </div>
+
+            <div class="repository">
+                <a href="./AC.html">排列数和组合数计算器</a>
+                <p class="description">排列数和组合数计算器(2024.4.20)</p>
+            </div>
         </div>
         <div style="bottom: 50px;text-align: center;margin-top: 80px;">
         <a target="_blank" href="./blog/open.html"><a href="https://ipw.cn/ssl/?site=oldsai.cn" title="本站支持SSL安全访问" target='_blank'><img style='display:inline-block;vertical-align:middle' alt="本站支持SSL安全访问" src="../images/ssl-s1.svg"></a>

diff --git a/map.html b/map.html
@@ -205,6 +205,7 @@ <h2 style="font-size:40px;">庞玺桐的博客的导览页面</h2>
               	  <li>网页导览<a href="./blog/tool/map.html"target="_blank">./map.html</a></li>
               	  <li>随机数<a href="./blog/tool/random_number.html"target="_blank">./random_number.html</a></li>
               	  <li>科学计算器<a href="./blog/tool/Calculator/index.html"target="_blank">./Calculator/index.html</a></li>
+              	  <li>排列数和组合数计算器<a href="./blog/tool/AC.html"target="_blank">./AC.html</a></li>
                 </ul>
               <li>页面<a href="./blog/more.html"target="_blank">./page</a></li>
                 <ul>