Question

java怎么实现统计一个字符串中字符出现的次数

Answer 1

public class CharCounter{
public static int counter(String s,char c){
int count=0;
for(int i=0;i<s.length();i++){
if(s.charAt(i)==c){
count++;
}
}
return count;
}
public static void main(String args[]){
System.out.println(new CharCounter().counter("LOVELOVEYOU",'O'));
}
}