These problems are related to stack.
Steps to make array non decreasing - January 5, 2023
Finding the number of visible mountains - January 3, 2023
Minimum remove to make valid parentheses - December 28, 2022
Backspace string compare - December 20, 2022
Maximum number of books you can take - December 19, 2022
Ternary expression parser - December 17, 2022
Maximum nesting depth of two valid parentheses strings - December 12, 2022
Removing stars from a string - December 11, 2022
Print immutable linked list in reverse - November 29, 2022
Check if word is valid after substitutions - November 26, 2022
Next greater node in linked list - November 26, 2022
Sum of subarray minimums - November 25, 2022
Add two numbers II - November 25, 2022
Final prices with a special discount in a shop - November 23, 2022
odd-even-jump - November 22, 2022
132 pattern - November 22, 2022
Maximum frequency stack - November 13, 2022
Remove all adjacent duplicates in string - November 10, 2022
Maximum nesting depth of the parentheses - November 10, 2022
Score of parentheses - November 10, 2022
Remove all adjacent duplicates in string II - November 10, 2022
Online stock span - November 9, 2022
Make the string great - November 8, 2022
Next greater element II - November 5, 2022
Reverse vowels of a string - November 4, 2022
Baseball game - October 6, 2022
Asteroid collision - October 3, 2022
Minimum insertions to balance a parentheses string - September 16, 2022
Minimum number of swaps to make the string balanced - September 9, 2022
Design a stack with increment operation - September 6, 2022
Remove duplicate letters - September 5, 2022
Basic calculator - September 5, 2022
Longest absolute file path - September 5, 2022
Basic calculator II - September 5, 2022
Basic calculator III - September 5, 2022
Verify preorder serialization of a binary tree - September 4, 2022
Decode string - September 3, 2022
Simplify path - August 29, 2022
Validate stack sequences - August 28, 2022
Remove k digits - August 27, 2022
Next greater element I - August 14, 2022
Largest rectangle in histogram - July 30, 2022
Daily temperatures - July 30, 2022
Car fleet - July 30, 2022
Generate parentheses - July 29, 2022
Min stack - July 19, 2022
Evaluate reverse polish notation - July 19, 2022
Valid parentheses - July 16, 2022
