打印出所有5个字符的可能组合

你的名字 2022-04-12 06:26 154阅读 0赞

根据以下条件写一段代码，打印出所有5个字符的可能组合：  
1. 至少有一个大写字母  
2. 至少有一个小写字母  
3. 至少有一个数字  
4.两个一样的数或者字母不能连在一起（比如 Haxa5是可以的，Haax5就不可以)

public static void print(){
       
    		String upper[] = {"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"};
    		String lower[] = {"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z"};
    		String num[] = {"0","1","2","3","4","5","6","7","8","9"};
    
    		String all[] = {"A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z",
    				"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q","r","s","t","u","v","w","x","y","z",
    				"0","1","2","3","4","5","6","7","8","9"};
    		String result = "";
    		for(int i=0;i<upper.length;i++){
       
    			for(int j=0;j<lower.length;j++){
       
    				for(int m=0;m<num.length;m++){
       
    					for(int n=0;n<all.length;n++){
       
    						for(int k=0;k<all.length;k++){
       
    							result+=upper[i]+lower[j]+num[m]+all[n]+all[k];
    							randomGroup(result);
    							result="";
    						}
    					}
    				}
    			}
    		}
    
    	}
    
    	public static void main(String[] args) {
       
    		print();
    	}
    
    	/**
    	 * 给五个字符的字符串的随机组合
    	 *
    	 */
    	public static void randomGroup(String fiveChar){
       
    		char c[]=fiveChar.toCharArray();
    		println(c);
    		allCombString(c,0); 
    	}
    
    	/**
    	 * 相邻字母是否相同
    	 * @param c
    	 * @return
    	 */
    	private static boolean isSameLetter(char c[]){
       
    		for(int i=0;i<c.length-1;i++){
       
    			if(c[i] == c[i+1]){
       
    				return false;
    			}
    		}
    		return true;
    	}
    
    	public static void allCombString(char[] c, int s) {
       
    		int l = c.length;
    		if (l - s == 2) {
       
    			char temp = c[l - 1];
    			c[l - 1] = c[l - 2];
    			c[l - 2] = temp;
    			println(c);
    		} else {
       
    			for (int i = s; i < l; i++) {
       
    				moveToHead(c, i, s);
    				char ct[] = new char[l];
    				System.arraycopy(c, 0, ct, 0, l);// 保持其他元素位置不变
    				allCombString(ct, s + 1);
    			}
    		}
    	}
    
    	public static void moveToHead(char[] c, int id, int s) {
       
    		if (id > s && id < c.length) {
       
    			char temp = c[id];
    			for (int i = id; i > s; i--) {
       
    				c[i] = c[i - 1];
    			}
    			c[s] = temp;
    			println(c);
    		}
    	}
    
    	public static void println(char[] c) {
       
    		if(isSameLetter(c)){//相邻字符不一样
    			System.out.print(new String(c)+"、");
    		}
    	}