题解 | #计算某字符出现次数#
计算某字符出现次数
https://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1
都转化成小写或大写再转成 char 数组
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
public class Main {
public static void main(String[] args) {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int count = 0;
try {
char[] arr = br.readLine().toLowerCase().toCharArray();
char[] arr1 = br.readLine().toLowerCase().toCharArray();
for (int i = 0; i < arr.length; i++) {
if (arr[i] == arr1[0]) {
count++;
}
}
} catch (IOException e) {
throw new RuntimeException(e);
}
System.out.println(count);
}
}
