# Write a program to find duplicate elements count in a matrix

In this article, we will learn how to find the count of duplicate elements counts in a given matrix.

# Write a program to check if given matrix is sparse matrix or not

In this article, we will understand about sparse matrix and learn how to write a program to check whether given matrix is sparse or not.

# Write a function to find median given two sorted arrays

In this article, we will understand how to write a function to find median given two sorted arrays. This is one of the most frequestly asked interview question in various interviews.

# You're  given  an  unsorted  array  of  integers  where  every  integer  appears  exactly  twice,  except  for  one  integer  which  appears  only  once.   Write  an  algorithm   that  finds  the  integer  that  appears  only  once.

You're  given  an  unsorted  array  of  integers  where  every  integer  appears  exactly  twice,  except  for  one  integer  which  appears  only  once.   Write  an  algorithm   that  finds  the  integer  that  appears  only  once. In this article we will understand the logic and approach to finds  the  integer  that  appears  only  once. This is one of the most popular question asked in Google interviews.

# Write a function to return minimum and maximum in an array

This is one of the most important interview question related to array. In this article, we will learn to write a function to return minimum and maximum in an array

# Write a function to return minimum and maximum in an array

This is one of the most important interview question related to array. In this article, we will learn to write a function to return minimum and maximum in an array

# Suppose we have an array a1, a2, ..., an, b1, b2, ..., bn. Write a program to convert this array to a1, b1, a2, b2, ..., an, bn

This is one of the most important interview question related to array/matrix. In this article we will learn to write a program to merge two arrays of equal size in alternative form.