message: Update Problem Statement.md
diff: -## Sparse Arrays
  -We have to strings one is collection of the input string and second is the collection of queries.
  -Our task is to find, How many times a query string occurs in the input string.
  -suppose we have
  -
  -Input = ["abc", "ab", "abc"]
  -queries = ["abc", "ab"]
  -result = [2,1] // 2 occurrences of "abc" and 1 occurrence of "ab"
  -
  -### Sample Input
  -
  -3
  -abc
  -ab
  -abc
  -2
  -abc
  -ab
  -
  -### Sample Output
  -
  -2
  -1
  -
  Link: https://www.hackerrank.com/challenges/sparse-arrays/problem
  