4.26作业

1: 字符串反转   举例：键盘录入”abc”    输出结果：”cba”  2:统计大串中小串出现的次数  举例：  在字符串"woaijavawozhenaijavawozhendeaijavawozhendehenaijavaxinbuxinwoaijavagun"  结果：   java出现了5次

public class homeWork {
	public static void main(String[]args) {
		Scanner sc=new Scanner(System.in);
		System.out.println("请输入一个字符串");
		String s=sc.nextLine();
		for(int i=s.length()-1;i>-1;i--) {
			System.out.print(s.charAt(i));
		}
	
		
	}
}

package org1;

import java.util.Scanner;

public class homeWork2 {
	public static void main(String[]args) {
		Scanner sc=new Scanner(System.in);
		System.out.println("请输入一个字符串");
		String s=sc.nextLine();
		System.out.println("请输入一个子串");
		String ss=sc.nextLine();
		
		
		int count =0;
		int x=s.indexOf(ss);
		
		while(x>0||x==0) {
			count++;
			s=s.substring(x+ss.length());
			x=s.indexOf(ss);
		}
		System.out.println(count);
	}
}