Problems

Easy

• Next greater element I leetcode
• Valid Parentheses leetcode
• Min Stack leetcode
• Remove Outermost Parentheses leetcode
• Remove All Adjacent Duplicates In String leetcode
• Number of Recent Calls leetcode
• Reverse First K elements of Queue GFG
• Delete middle element of a stack GFG
• Inorder Traversal (Iterative) GFG
• Preorder traversal (Iterative) GFG
• Flood fill leetcode
• Implement Queue using Stacks leetcode

Medium

• Design a Stack With Increment Operation leetcode
• Minimum Add to Make Parentheses Valid leetcode
• Decode String leetcode
• Asteroid Collision leetcode
• 132 Pattern leetcode
• Design circular Queue leetcode
• Find the Most Competitive Subsequence leetcode
• Design Front Middle Back Queue leetcode
• Circular tour GFG Amex Amazon
• Task Scheduler leetcode
• Stock span problem GFG
• Max Rectangle GFG
• The Celebrity Problem Google GFG
• Maximum Rectangular Area in a Histogram GFG
• Binary Tree Right Side View leetcode
• Snake and Ladders leetcode

Hard

• Longest Valid Parantheses leetcode
• Sliding window maximum leetcode
• Brace Expansion II leetcode
• Card Rotation GFG
• Minimum steps to reach target by a Knight GFG
• Count number of islands leetcode