• 寻找字符串中出现字符最多的次数,出现次数最多的字符,出现次数最多的字符的索引


    <!DOCTYPE html>
    <html lang="en">
    
    <head>
        <meta charset="UTF-8">
        <title>demo</title>
        <link rel="stylesheet" href="css.css">
        <script src="js.js"></script>
    </head>
    
    <body>
        <div>
            <h2>寻找字符串中出现字符最多的次数,出现次数最多的字符,出现次数最多的字符的索引</h2>
            <input type="text" placeholder="请输入字符串">
            <button>计算</button>
            <br> 出现字符最多的次数:
            <input type="text" />
            <br> 出现次数最多的字符:
            <input type="text" />
            <br> 出现次数最多的字符的索引:
            <input type="text" />
        </div>
    </body>
    
    </html>
    

      css.css

    div {
         800px;
        height: 200px;
        background: #f1f1f1;
        margin: 0 auto;
        text-align: center;
        line-height: 20px;
        border: 1px solid #ccc;
        border-radius: 10px;
    }
    
    h2 {
        font-size: 20px;
         100%;
    }
    
    button {
        cursor: pointer;
        background: #eee;
        border: 1px solid #ddd;
    }
    
    input {
         165px;
        height: 25px;
        border: 1px solid #ddd;
    }
    

      js.js

    window.onload = function() {
        var oBtn = document.getElementsByTagName("button");
        var oIpt = document.getElementsByTagName("input");
        oBtn[0].onclick = function() {
            var str = oIpt[0].value;
            var objChar = {};
            for (var i = 0; i < str.length; i++) {
                var char = str.charAt(i);
                if (objChar[char]) {
                    objChar[char] += 1;
                } else {
                    objChar[char] = 1;
                }
            }
            var maxCount = 0;
            var maxCharIndex = [];
            for (var key in objChar) {
                if (maxCount < objChar[key]) {
                    maxCount = objChar[key];
                    maxCharIndex = [];
                    maxCharIndex.push(key);
                } else if (maxCount == objChar[key]) {
                    maxCharIndex.push(key);
                }
            }
    
            function getCount() {
                return maxCount;
            }
    
            function getmaxChar() {
                return maxCharIndex;
            }
            var objIndex = {};
            var maxIndex = [];
            for (var j = 0; j < maxCharIndex.length; j++) {
                for (var i = 0; i < str.length; i++) {
                    if (str[i] == maxCharIndex[j]) {
                        maxIndex.push(i);
                    }
                    if (i == str.length - 1) {
                        objIndex[maxCharIndex[j]] = maxIndex;
                        maxIndex = [];
                    }
                }
            }
    
            function getIndex() {
                var maxIndex2 = [];
                for (var key in objIndex) {
                    maxIndex2.push(key + "的索引为(" + objIndex[key] + ")");
                }
                return maxIndex2;
            }
            oIpt[1].value = getCount();
            oIpt[2].value = getmaxChar();
            oIpt[3].value = getIndex();
        }
    }
    

      

  • 相关阅读:
    如何在Unity中播放影片
    C# typeof()实例详解
    unity3d用鼠标拖动物体的一段代码
    unity3d中Find的用法
    geometry_msgs/PoseStamped 类型的变量的构造
    c++ ros 计算两点距离
    C++ 利用指针和数组以及指针和结构体实现一个函数返回多个值
    C++ 结构体指针的定义
    Cannot initialize a variable of type 'Stu *' with an rvalue of type 'void *'
    C++中的平方、开方、绝对值怎么计算
  • 原文地址:https://www.cnblogs.com/pengzijun/p/5738931.html
Copyright © 2020-2023  润新知