package com.mypackage.array;
import java.util.Arrays;
public class Demo07 {
public static void main(String[] args) {
int[] a = {3,2,6,7,4,5,6,34,56,7};
int[] sort1 = sort1(a);
System.out.println(Arrays.toString(sort1));
int[] sort2 = sort2(a);
System.out.println(Arrays.toString(sort2));
}
public static int[] sort1 (int[] array){
int temp = 0;
for (int i = 0; i < array.length-1; i++) {
for (int j = 0; j < array.length-1-i; j++) {
if (array[j+1] > array[j]) {
temp = array[j];
array[j] = array[j+1];
array[j+1] = temp;
}
}
}
return array;
}
public static int[] sort2 (int[] array){
int temp = 0;
for (int i = 0; i < array.length-1; i++) {
for (int j = 0; j < array.length-1-i; j++) {
if (array[j+1] < array[j]) {
temp = array[j];
array[j] = array[j+1];
array[j+1] = temp;
}
}
}
return array;
}
}
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优化程序,减少不必要的循环次数:
public static int[] sort3 (int[] array){
int temp = 0;
for (int i = 0; i < array.length-1; i++) {
boolean flag = false;
for (int j = 0; j < array.length-1-i; j++) {
if (array[j+1] < array[j]) {
temp = array[j];
array[j] = array[j+1];
array[j+1] = temp;
flag = true;
}
}
if (flag == false){
break;
}
}
return array;
}
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