统计某个字符串字符出现的次数,以及出现次数的最大值
作者:互联网
某字符串字符出现次数
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<p></p>
<body>
<script>
var pp = document.querySelector("p");
var str = '123321asd1456&31413lkjh;loi33bui3';
var s1 = new String();
// 去重
for (i = 0; i < str.length; i++) {
//(s1.indexOf(str.[i]) == -1) 也可以
if (s1.indexOf(str.charAt(i)) == -1) {
s1 += str.charAt(i);
}
}
console.log(s1);
// s1中元素出现次数
var max = 0;
var zifu;
for (i = 0; i < s1.length; i++) {
var n = 0;
for (j = 0; j < str.length; j++) {
if (s1.charAt(i) == str.charAt(j)) {
n++;
}
}
pp.innerHTML += s1.charAt(i) + "出现的次数是:" + n + "<br>";
if (max < n) {
max = n;
zifu = s1.charAt(i);
}
}
console.log(max, zifu);
pp.innerHTML += "出现最多的字符是:" + zifu + " 出现次数是:" + max;
</script>
</body>
</html>
标签:charAt,zifu,max,最大值,var,次数,str,字符串,s1 来源: https://blog.csdn.net/datuzidppd5556/article/details/99638730