Leetcode Problem 946. Validate Stack Sequences

946. Validate Stack Sequences

Leetcode Solutions

Greedy Stack Simulation

  1. Initialize an empty stack and a pointer for the popped array.
  2. Iterate through each element in the pushed array. a. Push the current element onto the stack. b. While the stack is not empty and the top of the stack equals the element at the current pointer in the popped array: i. Pop the top element from the stack. ii. Increment the popped pointer.
  3. After the iteration, if the stack is empty, return true, indicating that the popped sequence is valid. Otherwise, return false.
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Backtracking Simulation

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