Array Problems

Arrays are the most fundamental data structure in programming. These problems cover traversal, manipulation, subarray patterns, sliding windows, and prefix sums — techniques that show up in almost every coding interview.

28 problems

Title	Difficulty	Platform
3Sum	Medium	LeetCode
3Sum Closest	Medium	LeetCode
4Sum	Medium	LeetCode
Best Time to Buy and Sell Stock	Easy	LeetCode
Best Time to Buy and Sell Stock II	Easy	LeetCode
Chocolate Distribution Problem	Easy	GeeksforGeeks
Container With Most Water	Medium	LeetCode
Find All Duplicates in an Array	Medium	LeetCode
Find the Duplicate Number	Easy	LeetCode
Game of Life	Medium	LeetCode
Insert Delete GetRandom O(1) - Duplicates allowed	Hard	LeetCode
Jump Game	Medium	LeetCode
Largest Rectangle in Histogram	Hard	LeetCode
Majority Element	Easy	LeetCode
Max Value of Equation	Hard	LeetCode
Maximum Points You Can Obtain from Cards	Medium	LeetCode
Merge Sorted Array	Easy	LeetCode
Move Zeroes	Easy	LeetCode
Print all combinations \| Set-2	Medium	GeeksforGeeks
Remove Duplicates from Sorted Array	Easy	LeetCode
Reverse Pairs	Hard	LeetCode
Set Matrix Zeroes	Easy	LeetCode
Sort Colors	Easy	LeetCode
Spiral Matrix	Medium	LeetCode
Subarray Sum Equals K	Medium	LeetCode
Subarray Sums Divisible by K	Medium	LeetCode
Two Sum	Easy	LeetCode
Word Search	Medium	LeetCode