1. To find the repeating elements in array and add them and replace it in position before the repeated element.
for e.g. input array A={1,2,3,3,4,5,6,6}
output array B={1,2,6,4,5,12}
2.To separate even and odd elements from an array and print new array with alternate even and odd element.
3.To print the below pattern
1
2 4
6 8 10
12 14 16 18
20 22 24 26 28
30 32 34 36 38 40
..........N

Question

1. To find the repeating elements in array and add them and replace it in position before the repeated element.
for e.g. input array A={1,2,3,3,4,5,6,6}
            output array B={1,2,6,4,5,12}
2.To separate even and odd elements from an array and print new array with alternate even and odd element.
3.To print the below pattern
1 
2 4
6 8 10
12 14 16 18
20 22 24 26 28
30 32 34 36 38 40       
..........N

pankaj joshi · Accepted Answer

package ArrayManupulation;

import java.util.Arrays;
import java.util.Vector;

public class ArrayOddEven {
    public static void odeven(int arr[],int n) {
    	Arrays.sort(arr);           //sorting array in ascending order.
    	
		Vector v1=new Vector();
		Vector v2=new Vector();
		
		for(int i=0;i

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