题解 | BFS
BFS
https://www.nowcoder.com/practice/22da7730da5d4a129a188ba24d22f2bf
import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
String S=in.next();
int a=S.toLowerCase().indexOf("bob");//用tolowerCase()将字符串全变成小写，再用idexOf查找"bob"
System.out.print(a);
}
}
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