关于Java中的数组转变成字符串问题

1。用StringBuilder

private static String arraytoString(int arr[]){	  	StringBuilder sb=new StringBuilder();	  	sb.append("[");	  	for (int i = 0; i < arr.length; i++) {				if(i==arr.length-1){					sb.append(arr[i]);				}else {					sb.append(arr[i]).append(", ");				}	  			}	  	sb.append("]");			return sb.toString();	  }

 2.普通型

private static void bianli(int arr[]){	  	System.out.print("[");	  	int i;	  	for (i = 0; i < arr.length; i++) {				if(i==arr.length-1){					System.out.println(arr[i]+"]");				}else {					System.out.print(arr[i]+", ");				}	  			}	  }

 3.字符串型

private static String arraytoString1(int arr[]){	  	String s="";	  	s+="[";	  	for (int i = 0; i < arr.length; i++) {				if(i==arr.length-1){					s+=arr[i];				}else {					s+=arr[i];					s+=", ";				}	  			}	  	s+="]";			return s;	  }

原标题：关于Java中的数组转变成字符串问题

关键词：JAVA