Problems with tag Stack
197 found, showing 120 to 150
Minimum Add to Make Parentheses Valid ->
Medium, #921, 3 solutions
Minimum Additions to Make Valid String ->
Medium, #2645, 2 solutions
Minimum Cost to Change the Final Value of Expression ->
Hard, #1896, 2 solutions
Minimum Cost Tree From Leaf Values ->
Medium, #1130, 2 solutions
Minimum Deletions to Make Array Beautiful ->
Medium, #2216, 2 solutions
Minimum Deletions to Make String Balanced ->
Medium, #1653, 2 solutions
Minimum Insertions to Balance a Parentheses String ->
Medium, #1541, 3 solutions
Minimum Number of Increments on Subarrays to Form a Target Array ->
Hard, #1526, 2 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 String Length After Removing Substrings ->
Easy, #2696, 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
Next Greater Node In Linked List ->
Medium, #1019, 3 solutions
Number of Atoms ->
Hard, #726, 3 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 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 Valid Subarrays ->
Hard, #1063, 2 solutions
Number of Visible People in a Queue ->
Hard, #1944, 2 solutions
Odd Even Jump ->
Hard, #975, 3 solutions
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