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Problems with tag Stack

197 found, showing 60 to 90

3

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Diameter of N-Ary Tree ->

Medium, #1522, 2 solutions

Dinner Plate Stacks ->

Hard, #1172, 2 solutions

Double a Number Represented as a Linked List ->

Medium, #2816, 2 solutions

Evaluate Reverse Polish Notation ->

Medium, #150, 4 solutions

Exclusive Time of Functions ->

Medium, #636, 3 solutions

Expression Evaluation ->

Hard, #368, 1 solutions

Expression Tree Build ->

Hard, #367, 1 solutions

Final Prices With a Special Discount in a Shop ->

Easy, #1475, 2 solutions

Find a Corresponding Node of a Binary Tree in a Clone of That Tree ->

Easy, #1379, 2 solutions

Find Building Where Alice and Bob Can Meet ->

Hard, #2940, 2 solutions

Find Maximum Non-decreasing Array Length ->

Hard, #2945, 2 solutions

Find Permutation ->

Medium, #484, 2 solutions

Find the Most Competitive Subsequence ->

Medium, #1673, 2 solutions

Find the Number of Subarrays Where Boundary Elements Are Maximum ->

Hard, #3113, 2 solutions

Finding the Number of Visible Mountains ->

Medium, #2345, 2 solutions

Flatten Binary Tree to Linked List ->

Medium, #114, 5 solutions

Flatten Nested List Iterator ->

Medium, #341, 5 solutions

Implement Queue by Two Stacks ->

Medium, #40, 1 solutions

Implement Queue using Stacks ->

Easy, #232, 5 solutions

Implement Stack using Queues ->

Easy, #225, 4 solutions

Increasing Order Search Tree ->

Easy, #897, 2 solutions

is Array a Preorder of Some ‌Binary Tree ->

Medium, #2764, 2 solutions

Find All The Lonely Nodes ->

Easy, #1469, 2 solutions

Frog Position After T Seconds ->

Hard, #1377, 2 solutions

->

Medium,

Iterator for Combination ->

Medium, #1286, 2 solutions

->

Medium,

Largest Rectangle in Histogram ->

Hard, #84, 5 solutions

Last Visited Integers ->

Easy, #2899, 2 solutions

Leaf-Similar Trees ->

Easy, #872, 3 solutions