蓝桥杯2014年第五届真题-拼接平方数-题解(Java代码)

import java.util.Scanner;
public class Main {
    public static boolean ispinjie(String s){
        for(int i = 1;i<s.length();i++){
            int ch1 = Integer.parseInt(s.substring(0,i));
            int ch2 = Integer.parseInt(s.substring(i,s.length()));
            if(issqrt(ch1) && issqrt(ch2)){
                return true;
            }
        }
        return false;
    }
    public static boolean issqrt(int n){
        if(n==0){
            return false;
        }
        int res = (int)Math.sqrt(n);
        if(res * res == n){
            return true;
        }else{
            return false;
        }
    }
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int left = sc.nextInt();
        int right = sc.nextInt();
        for(int i = left;i<=right;i++){
            if(i==1){
                continue;
            }
            if(issqrt(i)) {
                if(ispinjie(i+"")){
                    System.out.println(i);
                }
            }
        }
    }
}