Grasp the fundamentals of stacks, their operations, and applications in various problems.
Introduction to Stacks Basic Calculator Remove All Adjacent Duplicates In String Minimum Remove to Make Valid Parentheses Exclusive Time of Functions Flatten Nested List Iterator Implement Queue Using Stacks Daily Temperatures Decode String Minimum String Length After Removing Substrings Number of Valid Subarrays Number of Visible People in a Queue Parsing a Boolean Expression Valid Parentheses