统计一个字符串中出现最多的字符和个数 

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <script>
    var str = "sdsadjhchjcsandnm ewqme lkncnasnxsanxmdnndkncnnvnmncmnxcmnz,mvn.bnc,mzxc,nlkdn;akv';kpwkerwncmm.,v"
    var obj = {}
    for (var i = 0; i < str.length; i++) {
      if (obj[str[i]]) {
        obj[str[i]] += 1;
      } else {
        obj[str[i]] = 1;
      }
    }


    var max = 0;
    var des = ""
    for (var it in obj) {
      if (obj[it] > max) {
        des = it;
        max = obj[it]
      }
    }
    console.log(obj)
    console.log(max)
    console.log(des)
  </script>
</head>
posted @ 2021-06-02 17:52  fk11  阅读(110)  评论(0)    收藏  举报