Task "Insertion Sort" solved

http://rosalind.info/problems/ins/
Problem "Majority Element" solved

http://rosalind.info/problems/maj/
Problem "Merge Two Sorted Arrays" solved

http://rosalind.info/problems/mer/
Problem "Merge Sort" solved

http://rosalind.info/problems/ms/
Problem "Counting Inversions" solved

http://rosalind.info/problems/inv/