判斷字符A在字符串ADSAAAAAERGASDF中出現(xiàn)的次數(shù)，求過程
5 回答
老衲有一只豬
TA貢獻1條經(jīng)驗 獲得超3個贊
int?count?=?0;
????????String?str?=?"ADSAAAAAERGASDF";
????????for(int?i=0;i<str.length();i++){
????????????if(str.charAt(i)=='A'){
????????????????count++;
????????????}
????????}
????????System.out.println(count);
慕粉jason
TA貢獻1條經(jīng)驗 獲得超1個贊
var str='ADSAAAAAERGASDF'
var arr=str.match(/A/gi);
console.log(arr.length);
qq_大鵬_18
TA貢獻1條經(jīng)驗 獲得超0個贊
<?php
????$str = "ADSAAAAAERGASDF";
????$num = substr_count($str,'A');
????echo $num;
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