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Problems with tag Stack

197 found, showing 1 to 30

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132 Pattern ->

Medium, #456, 2 solutions

Add and Search Word ->

Medium, #473, 1 solutions

Add Two Numbers II ->

Medium, #445, 2 solutions

All Elements in Two Binary Search Trees ->

Medium, #1305, 2 solutions

Apply Operations to Maximize Score ->

Hard, #2818, 2 solutions

Asteroid Collision ->

Medium, #735, 2 solutions

Backspace String Compare ->

Easy, #844, 3 solutions

Balance a Binary Search Tree ->

Medium, #1382, 2 solutions

Baseball Game ->

Easy, #682, 2 solutions

Basic Calculator II ->

Medium, #227, 3 solutions

Basic Calculator III ->

Hard, #772, 2 solutions

Basic Calculator IV ->

Hard, #770, 2 solutions

Basic Calculator ->

Hard, #224, 4 solutions

Beautiful Towers I ->

Medium, #2865, 2 solutions

Beautiful Towers II ->

Medium, #2866, 2 solutions

Binary Search Tree Iterator II ->

Medium, #1586, 2 solutions

Binary Search Tree Iterator ->

Medium, #173, 7 solutions

Binary Tree Inorder Traversal ->

Easy, #94, 5 solutions

Binary Tree Postorder Traversal ->

Easy, #145, 6 solutions

Binary Tree Preorder Traversal ->

Easy, #144, 5 solutions

Brace Expansion II ->

Hard, #1096, 2 solutions

Build an Array With Stack Operations ->

Medium, #1441, 2 solutions

Build Binary Expression Tree From Infix Expression ->

Hard, #1597, 2 solutions

Buildings With an Ocean View ->

Medium, #1762, 2 solutions

Car Fleet II ->

Hard, #1776, 2 solutions

Car Fleet ->

Medium, #853, 2 solutions

Check if a Parentheses String Can Be Valid ->

Medium, #2116, 2 solutions

Check If a String Is a Valid Sequence from Root to Leaves Path in a Binary Tree ->

Medium, #1430, 2 solutions

Check If Two Expression Trees are Equivalent ->

Medium, #1612, 2 solutions

Check If Word Is Valid After Substitutions ->

Medium, #1003, 2 solutions