Videos

• Bubble Sort
• Selection Sort
• Insertion Sort
• Cycle Sort
• Merge Sort
• Quick Sort

Questions

Easy

• Merge Sorted Array
• Majority Element
• Contains Duplicate
• Missing Number
• Intersection of Two Arrays
• Intersection of Two Arrays II
• Third Maximum Number
• Assign Cookies
• Array Partition I
• Maximum Product of Three Numbers
• Sort Array By Parity
• Sort Array By Parity II
• Largest Perimeter Triangle
• Squares of a Sorted Array
• Matrix Cells in Distance Order
• Height Checker
• Relative Sort Array
• Minimum Absolute Difference
• Rank Transform of an Array
• Sort Integers by The Number of 1 Bits
• How Many Numbers Are Smaller Than the Current Number
• Maximum Product of Two Elements in an Array
• Average Salary Excluding the Minimum and Maximum Salary
• Make Two Arrays Equal by Reversing Sub-arrays
• Can Make Arithmetic Progression From Sequence
• Sort Array by Increasing Frequency
• Special Array With X Elements Greater Than or Equal X
• Find all numbers disappeared in an array
• Set Mismatch
• 2Sum

Medium

• 3Sum
• 3Sum Closest
• 4Sum
• Group Anagrams
• Merge Intervals
• Sort Colors
• Insertion Sort List
• Sort List
• Largest Number
• Kth Largest Element in an Array
• Find the Duplicate Number
• Find all Duplicates in an array

Hard

• First missing Positive