java随机两个数组

太过爱你忘了你带给我的痛 2022-06-02 04:21 184阅读 0赞

笃信好学，自然宽和：

本章学习点：生成随机数 random.nextInt()，switch(),多个循环for的使用；

package caipiao_test;
    
    import java.util.Random;
    
    public class HowMuchNum {
    	int[] x = new int[6];
    	int[] y = new int[6];
    	
    	int w = 10;
    	
    	int k = 0;
    	Random  random = new Random();
    	
    	public void RandomNum(){      //随机生成x[]和y[]两个数组；
    		for(int i=0;i<x.length;i++){
    			x[i] = random.nextInt(32);
    			System.out.print(x[i] + " ");
    		}	
    		System.out.println();
    		System.out.println("-------------------------");
    		for(int i=0;i<y.length;i++){
    			y[i] = random.nextInt(32);
    			System.out.print(y[i] + " ");
    		}
    		System.out.println();
    		System.out.println("-------------------------");
    	}
    	public void Num1(){      //判断个位数，十位数，二十位数，三十位数的数量
    		int one = 0;
    		int ten = 0;
    		int twenty = 0;
    		int thirty = 0;
    		
    		for(int i=0;i<x.length;i++){
    		   switch (x[i]/w) {
    		    case 0:
    			  one++;
    			  break;
    		    case 1:
    		    	ten++;
    		    	break;
    		    case 2:
    		    	twenty++;
    		    	break;
    		    case 3:
    		    	thirty++;
    		    	break;
    		   }
    		}
    		System.out.println("one:" + one + " ten:" + ten + " twenty:" + twenty + " thirty:"+thirty);
    		System.out.println("-------------------------");
    		if((one>4) || (ten>4) || (twenty>4) || (thirty>4)){
    			this.RandomNum();
    			this.Num1();
    		}
    	}
    	
    	public void HowMuchNum(){    //判断数组中有几个相同的数值
    		for(int i=0;i<x.length;i++){
    			for(int j=0;j<y.length;j++){
    				if(x[i] == y[j]){
    					k++;
    					break;
    				}
    			}
    		}
    		if(k>4){
    			this.RandomNum();
    			this.Num1();
    		}
    		System.out.println("有K个数相同，K=" + k);
    	}
    
    }