Remove duplicates from array without using java utils.
public class RemoveDuplicates { public static void main(String[] args) { Integer arr[] = {1,4,2,1,7,5,0,7,7,1,1,5,4,9,4,1,5,4,9,7,6,1,7,7,8,9,9,0,4}; for(int i=0;i<arr.length-1;i++){ for(int j=i+1;j<arr.length-1;j++){ if(arr[i] == arr[j]){ for(int k = j; k<arr.length-1;k++){ arr[k] = arr[k+1]; } //copy array to remove last element. Integer copy[] = new Integer[arr.length-1]; System.arraycopy(arr, 0, copy, 0, arr.length-1); arr = copy; //decrease j value in case match found to not miss repeated values. j--; } } } for(int z=0; z<arr.length;z++) System.out.print(arr[z]); } }