1.package helloWorld;public class test_4 { public static void main(String[] args){ int[] arr={12,45,321,44,66,78,12}; for(int j=0;j<arr.length-1;j++){ for(int i=0;i<arr.length-1;i++){ if(arr[i]>arr[i+1]){ int t=arr[i]; arr[i]=arr[i+1]; arr[i+1]=t; } } } for(int i=0;i<arr.length;i++){ System.out.println(arr[i]); } }}2。package helloWorld;public class test_4 { public static void main(String[] args){ int[] arr={12,45,321,44,66,78,12}; for(int j=0;j<arr.length-1;j++){ for(int i=arr.length-1;i>=0;i--){ if(arr[i]>arr[i-1]){ int t=arr[i]; arr[i]=arr[i-1]; arr[i-1]=t; } } } for(int i=0;i<arr.length;i++){ System.out.println(arr[i]); } }}