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Problems with tag O(n)

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Count Subarrays With Score Less Than K ->

Hard, #2302, 2 solutions

Count Submatrices With All Ones ->

Medium, #1504, 2 solutions

Count Substrings Starting and Ending with Given Character ->

Medium, #3084, 2 solutions

Count Substrings with Only One Distinct Letter ->

Easy, #1180, 2 solutions

Count Substrings Without Repeating Character ->

Medium, #2743, 2 solutions

Count Tested Devices After Test Operations ->

Easy, #2960, 2 solutions

Count the Hidden Sequences ->

Medium, #2145, 2 solutions

Count the Number of Beautiful Subarrays ->

Medium, #2588, 2 solutions

Count the Number of Complete Components ->

Medium, #2685, 2 solutions

Count the Number of Consistent Strings ->

Easy, #1684, 2 solutions

Count the Number of Experiments ->

Medium, #1990, 1 solutions

Count the Number of Good Partitions ->

Hard, #2963, 2 solutions

Count the Number of Good Subarrays ->

Medium, #2537, 2 solutions

Count the Number of Good Subsequences ->

Medium, #2539, 2 solutions

Count the Number of Houses at a Certain Distance I ->

Medium, #3015, 2 solutions

Count the Number of Houses at a Certain Distance II ->

Hard, #3017, 2 solutions

Count the Number of Incremovable Subarrays I ->

Easy, #2970, 2 solutions

Count the Number of Incremovable Subarrays II ->

Hard, #2972, 2 solutions

Count the Number of K-Free Subsets ->

Medium, #2638, 2 solutions

Count the Number of Vowel Strings in Range ->

Easy, #2586, 2 solutions

Count the Number of K-Big Indices ->

Hard, #2519, 2 solutions

Count Triplets That Can Form Two Arrays of Equal XOR ->

Medium, #1442, 2 solutions

Count Unique Characters of All Substrings of a Given String ->

Hard, #828, 2 solutions

Count Univalue Subtrees ->

Medium, #250, 2 solutions

Count Unreachable Pairs of Nodes in an Undirected Graph ->

Medium, #2316, 2 solutions

Count Valid Paths in a Tree ->

Hard, #2867, 2 solutions

Count Visited Nodes in a Directed Graph ->

Hard, #2876, 2 solutions

Count Vowel Strings in Ranges ->

Medium, #2559, 2 solutions

Count Vowel Substrings of a String ->

Easy, #2062, 2 solutions

Count Ways To Build Good Strings ->

Medium, #2466, 2 solutions