将字符串数组按照字典顺序排序

public class StringTest1 {

/**
* 给定一个字符串数组，按照字典顺序进行从小到大的排序
* {"nba","abc","cba","zz","qq","haha"}
*/
public static void main(String[] args) {
String[] arr={"nba","abc","cba","zz","qq","haha"};
printString(arr);
System.out.println();
sortString(arr);
printString(arr);
System.out.println();
sortString1(arr);
printString(arr);

}
/**
* 冒泡排序法
*/
private static void sortString1(String[] arr) {
for (int i = 1; i < arr.length; i++) {
for (int j = 0; j < arr.length-1; j++) {
if(arr[j].compareTo(arr[j+1])>0){
swap(arr, j, j+1);
}
}
}
}

/**
* 选择排序法
*/
private static void sortString(String[] arr) {

for (int i = 0; i < arr.length-1; i++) {
for (int j = i+1; j < arr.length; j++) {
if (arr[i].compareTo(arr[j])>0) {
swap(arr,i,j);
}
}
}

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

private static void swap(String[] arr, int i, int j) {
String temp=arr[i];
temp=arr[j];
arr[j]=arr[i];
arr[i]=temp;

}

}