编写程序统计字符串“The String class represents character strings”中字母“s”的出现次数,区分大小写。
package com.stx.p2;
/**
* @Author HanLin
* @Date 2021/2/10 11:29
* @Version 1.0
*/
public class test02 {
public static void main(String[] args) {
String txt = "The String class represents character strings";
char[] arr = txt.toCharArray();//字符串转数组
int S_count = 0;
int s_count = 0;
//本来打算用三元运算符连写两个 结果发现java不支持,但是js是支持的
for (int x : arr) {
if (x == 'S') {
S_count++;
} else if (x == 's') {
s_count++;
}
}
System.out.println("S出现次数"+S_count +"\ns出现次数"+ s_count);
}
}