全国高校计算机能力挑战赛Java试题

1.输入个数N，求出1-N之间所有立方数

package zzhaosheng;

import java.util.Scanner;

public class jisuanlifangshu {
public static void main(String[] args) {
	Scanner sc = new Scanner(System.in);
	System.out.println("请输入一个N数，计算0-N之间的立方数的个数");
	int N = sc.nextInt();
	int num=0;
	for(int i=2;i<N;i++) {
		for(int j=1;j<(i/2);j++) {
			if((i/j)/j==j&&(i/j)%j==0&&i%j==0) {
				num+=1;
				//System.out.println(i);
				break;
			}	
	}
		
}
	System.out.println(1+num);
}
}

2.输入N M两个数 输出两个数之间所有非偶数的合数

package zzhaosheng;

import java.util.Scanner;

public class jisuanN_Mheshu {
public static void main(String[] args) {
	Scanner scanner = new Scanner(System.in);
	System.out.println("输入一个N 输入一个M 输出这两个数之间所有合数");
	int N = scanner.nextInt();
	int M = scanner.nextInt();
	int num=0;
	for(;N<M;N++) {
		for (int i=2;i<N/2;i++) {
			if (N%i==0&&N%2!=0) {
				num+=1;
				break;
			}
		}
	}
	System.out.println(num);
}
}

3.输入一个字符串，判断a-z个数 0-9个数 其他符号个数

package zzhaosheng;

import java.io.BufferedReader;
import java.util.Scanner;


public class tongjiString {
public static void main(String[] args) {
	System.out.println("输入一个字符串，判断a-z个数 0-9个数 其他符号个数");
	Scanner scanner = new Scanner(System.in);
	String string = scanner.nextLine();
	//System.out.println(string);
	char[] chs = string.toCharArray();
	int str_num=0;
	int numb_num=0;
	int other_num=0;
	int kg_num=0;
	for(int i=0;i<chs.length;i++) {
		//System.out.println(chs[i]);
		if((chs[i]>='a'&&chs[i]<='z')||(chs[i]>='A'&&chs[i]<='Z')) {
			str_num+=1;
		}else if(chs[i]>='0'&&chs[i]<='9') {
			numb_num+=1;
		} else if(chs[i]==' ') {
			kg_num+=1;
		}else{
			other_num+=1;
		}
	}
	System.out.println("a-z"+" "+str_num);
	System.out.println("0-9"+" "+numb_num);
	System.out.println("空格"+' '+kg_num);
	System.out.println("other"+" "+other_num);
}
}

本文地址：https://blog.csdn.net/weixin_44976835/article/details/109988257