Java 编写程序 统计字符串“want you to know one thing”中字母n和字母o的出现次数

public class Count{public static void main(String args[]){int j=0,k=0;char x='n';char y='o'; String s="want you to know one thing";char a[]=s.toCharArray();for(int i=0;i<a.length;i++){if(x==a[i]){j++;}if(y==a[i]){k++;}}System.out.println("字母n出现的次数："+j+"次 "+"字母o出现的次数："+k+"次");}}

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