package HelloWorld;
import java.util.Scanner;
public class wang1 {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String str = sc.nextLine();
String s ="chuanzhi";
int num = 0;
int count = 0;
while((num = str.indexOf(s,num))!=-1) {
num = num+s.length();
count++;
}
System.out.println(count);
}
}
Scanner类获取输入的字符串
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