HJ2 计算某字符出现次数

柔情只为你懂 2024-03-27 16:02 73阅读 0赞

> [牛客华为机试题库【题号 HJ开头】（重点看）][HJ]  
> [牛客在线编程算法篇【题号NC开头】][NC]  
> [剑指offer【题号 JZ开头】][offer_ JZ]  
> [力扣][Link 1]

### 1）[原题链接][Link 2] ###

### 2）[已有题解][Link 3] ###

### 3）代码 ###

package string;
    
    import java.io.BufferedReader;
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.util.Locale;
    
    import static java.lang.System.in;
    
    public class HJ2CountTheNumberOfOccurrencesOfACharacter {
        
        public static void main(String[] args) throws IOException {
        
            BufferedReader bf = new BufferedReader(new InputStreamReader(in));
            char[] chars = bf.readLine().toLowerCase(Locale.ROOT).toCharArray();
            char[] chars2 = bf.readLine().toLowerCase(Locale.ROOT).toCharArray();
            bf.close();
    
            int count = 0;
            for (int i = 0; i < chars.length; i++) {
        
                if (chars[i] == chars2[0]) {
        
                    count++;
                }
            }
    
            System.out.println(count);
        }
    }

[HJ]: https://www.nowcoder.com/exam/oj/ta?tpId=37
[NC]: https://www.nowcoder.com/exam/oj
[offer_ JZ]: https://www.nowcoder.com/exam/oj/ta?page=1&tpId=13&type=13
[Link 1]: https://leetcode.cn/problemset/all/
[Link 2]: https://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1?tpId=37&tqId=21225&rp=1&ru=/exam/oj/ta&qru=/exam/oj/ta&sourceUrl=/exam/oj/ta?tpId=37&difficulty=undefined&judgeStatus=undefined&tags=&title=
[Link 3]: https://juejin.cn/post/7100433627393032199