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Problems with tag O(n)

1949 found, showing 1560 to 1590

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53

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Removing Stars From a String ->

Medium, #2390, 2 solutions

Rename Columns ->

Easy, #2885, 1 solutions

Reorder List ->

Medium, #143, 5 solutions

Reorder Routes to Make All Paths Lead to the City Zero ->

Medium, #1466, 2 solutions

Reorganize String ->

Medium, #767, 2 solutions

Repeated DNA Sequences ->

Medium, #187, 2 solutions

Repeated Substring Pattern ->

Easy, #459, 3 solutions

Replace All Digits with Characters ->

Easy, #1844, 3 solutions

Replace All ?'s to Avoid Consecutive Repeating Characters ->

Easy, #1576, 2 solutions

Replace Elements in an Array ->

Medium, #2295, 2 solutions

Replace Elements with Greatest Element on Right Side ->

Easy, #1299, 2 solutions

Replace Employee ID With The Unique Identifier ->

Easy, #1378, 1 solutions

Replace the Substring for Balanced String ->

Medium, #1234, 2 solutions

Replace Words ->

Medium, #648, 3 solutions

Report Contiguous Dates ->

Hard, #1225, 1 solutions

Reported Posts II ->

Medium, #1132, 1 solutions

Reported Posts ->

Easy, #1113, 1 solutions

Reshape Data: Melt ->

Easy, #2890, 1 solutions

Reshape Data: Pivot ->

Easy, #2889, 1 solutions

Restaurant Growth ->

Medium, #1321, 1 solutions

Restore the Array From Adjacent Pairs ->

Medium, #1743, 3 solutions

Reveal Cards In Increasing Order ->

Medium, #950, 4 solutions

Reverse Linked List II ->

Medium, #92, 6 solutions

Reverse Linked List ->

Easy, #206, 6 solutions

Reverse Nodes in Even Length Groups ->

Medium, #2074, 2 solutions

Reverse Nodes in k-Group ->

Hard, #25, 5 solutions

Reverse Odd Levels of Binary Tree ->

Medium, #2415, 2 solutions

Reverse Only Letters ->

Easy, #917, 2 solutions

Reverse Pairs ->

Hard, #493, 5 solutions

Reverse Prefix of Word ->

Easy, #2000, 2 solutions