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Problems with tag O(n)

1949 found, showing 1500 to 1530

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51

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Rank Transform of an Array ->

Easy, #1331, 2 solutions

Ransom Note ->

Easy, #383, 3 solutions

Reachable Nodes With Restrictions ->

Medium, #2368, 2 solutions

Read N Characters Given Read4 II - Call multiple times ->

Hard, #158, 3 solutions

Read N Characters Given Read4 ->

Easy, #157, 4 solutions

Rearrange Array Elements by Sign ->

Medium, #2149, 2 solutions

Rearrange Products Table ->

Easy, #1795, 1 solutions

Rearrange Spaces Between Words ->

Easy, #1592, 2 solutions

Rearrange String k Distance Apart ->

Hard, #358, 2 solutions

Rearrange Words in a Sentence ->

Medium, #1451, 2 solutions

Rearranging Fruits ->

Hard, #2561, 2 solutions

Reconstruct a 2-Row Binary Matrix ->

Medium, #1253, 2 solutions

Reconstruct Original Digits from English ->

Medium, #423, 3 solutions

Recover a Tree From Preorder Traversal ->

Hard, #1028, 3 solutions

Recover Binary Search Tree ->

Medium, #99, 4 solutions

Recover Rotated Sorted Array ->

Easy, #39, 1 solutions

Recover the Original Array ->

Hard, #2122, 2 solutions

Rectangle Area II ->

Hard, #850, 2 solutions

Recyclable and Low Fat Products ->

Easy, #1757, 1 solutions

Redistribute Characters to Make All Strings Equal ->

Easy, #1897, 2 solutions

Reduce Array Size to The Half ->

Medium, #1338, 2 solutions

Redundant Connection II ->

Hard, #685, 2 solutions

Redundant Connection ->

Medium, #684, 3 solutions

Reformat Date ->

Easy, #1507, 2 solutions

Reformat Department Table ->

Easy, #1179, 1 solutions

Reformat Phone Number ->

Easy, #1694, 3 solutions

Reformat The String ->

Easy, #1417, 2 solutions

Regular Expression Matching ->

Hard, #10, 4 solutions

Rehashing ->

Medium, #129, 1 solutions

Relative Ranks ->

Easy, #506, 3 solutions