Practice Validate Stack Sequences
Read the task, work through the examples, and check your approach against the constraints. Use the original LeetCode task for coding and submissions.
Problem Statement
Given two integer arrays 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, or false otherwise.
Source: Validate Stack Sequences on LeetCode. Use the original task for its coding environment and submissions.
Examples
# Example 1
Input
pushed = [1,2,3,4,5], popped = [4,5,3,2,1]
Output
true
# Example 2
Input
pushed = [1,2,3,4,5], popped = [4,3,5,1,2]
Output
false
Constraints
1 <= pushed.length <= 1000
0 <= pushed[i] <= 1000
All the elements of pushed are unique.
popped.length == pushed.length
popped is a permutation of pushed.
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