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Problems with tag Stack

197 found, showing 120 to 150

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Minimum Add to Make Parentheses Valid ->

Medium, #921, 3 solutions

Minimum Additions to Make Valid String ->

Medium, #2645, 2 solutions

Minimum Cost Tree From Leaf Values ->

Medium, #1130, 2 solutions

Minimum Deletions to Make Array Beautiful ->

Medium, #2216, 2 solutions

Minimum Insertions to Balance a Parentheses String ->

Medium, #1541, 3 solutions

Minimum Number of Swaps to Make the String Balanced ->

Medium, #1963, 2 solutions

Minimum Number of Visited Cells in a Grid ->

Hard, #2617, 2 solutions

Minimum Remove to Make Valid Parentheses ->

Medium, #1249, 2 solutions

Minimum Number of Increments on Subarrays to Form a Target Array ->

Hard, #1526, 2 solutions

Minimum Time to Collect All Apples in a Tree ->

Medium, #1443, 2 solutions

Minimum Time to Complete All Tasks ->

Hard, #2589, 2 solutions

Move Sub-Tree of N-Ary Tree ->

Hard, #1516, 2 solutions

N-ary Tree Postorder Traversal ->

Easy, #590, 2 solutions

N-ary Tree Preorder Traversal ->

Easy, #589, 2 solutions

Nested List Weight Sum II ->

Medium, #364, 2 solutions

Next Greater Element I ->

Easy, #496, 3 solutions

Next Greater Element II ->

Medium, #503, 2 solutions

Next Greater Element IV ->

Hard, #2454, 2 solutions

Minimum Deletions to Make String Balanced ->

Medium, #1653, 2 solutions

Minimum Cost to Change the Final Value of Expression ->

Hard, #1896, 2 solutions

Next Greater Node In Linked List ->

Medium, #1019, 3 solutions

Minimum String Length After Removing Substrings ->

Easy, #2696, 2 solutions

Number of Good Leaf Nodes Pairs ->

Medium, #1530, 2 solutions

Number of Nodes in the Sub-Tree With the Same Label ->

Medium, #1519, 2 solutions

Number of Atoms ->

Hard, #726, 3 solutions

Number of Valid Subarrays ->

Hard, #1063, 2 solutions

Number of People That Can Be Seen in a Grid ->

Medium, #2282, 2 solutions

Number of Students Unable to Eat Lunch ->

Easy, #1700, 3 solutions

Number of Visible People in a Queue ->

Hard, #1944, 2 solutions

Odd Even Jump ->

Hard, #975, 3 solutions