Validate Stack Sequences
January 26, 2024
Problem Statement # Given two sequences pushed and popped, each with distinct values, return true if this could have been the result of a sequence of push and pop operations on an initially empty stack, otherwise false. Example: Input: pushed = [1,2,3,4,5], popped = [4,5,3,2,1] Output: True Explanation: We can push 1, 2, 3, 4, and 5 and then pop them in the order [4,5,3,2,1]. Solution Approach # The solution involves simulating the push and pop operations on a stack. ...