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