Top 50 Array Coding Problems for Interviews

Smallest Difference Triplet from Three arrays

Here is the collection of the Top 50 list of frequently asked interview questions on arrays. Problems in this Article are divided into three Levels so that readers can practice according to the difficulty level step by step.

Level 1

Problems	Solve
Find a peak element which is not smaller than its neighbors	Solve
Find the minimum and maximum element in an array	Solve
Write a program to reverse the array	Solve
Write a program to sort the given array	Solve
Find the Kth largest and Kth smallest number in an array	Solve
Find the occurrence of an integer in the array	Solve
Sort the array of 0s, 1s, and 2s	Solve
Subarray with given Sum	Solve
Move all the negative elements to one side of the array	Solve
Find the Union and Intersection of the two sorted arrays	Solve

Level 2

Problems	Solve
Write a program to cyclically rotate an array by one	Solve
Find the missing integer	Solve
Count Pairs with the given sum	Solve
Find duplicates in an array	Solve
Sort an Array using the Quicksort algorithm	Solve
Find common elements in three sorted arrays	Solve
Find the first repeating element in an array of integers	Solve
Find the first non-repeating element in a given array of integers	Solve
Subarrays with equal 1s and 0s	Solve
Rearrange the array in alternating positive and negative items	Solve
Find if there is any subarray with a sum equal to zero	Solve
Find the Largest sum contiguous Subarray	Solve
Find the factorial of a large number	Solve
Find Maximum Product Subarray	Solve
Find the longest consecutive subsequence	Solve
Find the minimum element in a rotated and sorted array	Solve
Max sum in the configuration	Solve
Minimum Platforms	Solve
Minimize the maximum difference between the heights	Solve
Minimum number of jumps to reach the end	Solve
Stock Span problem	Solve
Find a triplet that sums to a given value	Solve
Smallest positive missing number	Solve
Find the row with a maximum number of 1’s	Solve
Print the matrix in a Spiral manner	Solve
Find whether an array is a subset of another array	Solve
Implement two Stacks in an array	Solve
Majority Element	Solve
Wave Array	Solve
Trapping Rainwater	Solve

Level 3

Problems	Solve
Maximum Index	Solve
Max sum path in two arrays	Solve
Find Missing And Repeating	Solve
Stock buy and sell Problem	Solve
Pair with the given sum in a sorted array	Solve
Chocolate Distribution Problem	Solve
Partition Equal Subset Sum	Solve
Smallest Positive integer that can’t be represented as a sum	Solve
Coin Change Problem	Solve
Longest Alternating subsequence	Solve

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Smallest Difference Triplet from Three arrays

Top 50 Array Coding Problems for Interviews

Level 1

Level 2

Level 3

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