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O 1

Problems with tag O(1)

1447 found, showing 660 to 690

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23

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Longest Substring with At Most Two Distinct Characters ->

Medium, #159, 3 solutions

Longest Substring Without Repeating Characters ->

Medium, #3, 5 solutions

Longest Turbulent Subarray ->

Medium, #978, 4 solutions

Longest Uncommon Subsequence I ->

Easy, #521, 2 solutions

Longest Uncommon Subsequence II ->

Medium, #522, 2 solutions

Longest Unequal Adjacent Groups Subsequence I ->

Easy, #2900, 2 solutions

Longest Word in Dictionary through Deleting ->

Medium, #524, 3 solutions

Lowest Common Ancestor of a Binary Search Tree ->

Medium, #235, 5 solutions

Lowest Common Ancestor of a Binary Tree III ->

Medium, #1650, 2 solutions

LRU Cache ->

Medium, #146, 6 solutions

Magic Squares In Grid ->

Medium, #840, 2 solutions

Magnetic Force Between Two Balls ->

Medium, #1552, 2 solutions

Majority Element II ->

Medium, #229, 3 solutions

Majority Element ->

Easy, #169, 3 solutions

Majority Number ->

Easy, #46, 2 solutions

Make a Square with the Same Color ->

Easy, #3127, 2 solutions

Make Costs of Paths Equal in a Binary Tree ->

Medium, #2673, 2 solutions

Make Number of Distinct Characters Equal ->

Medium, #2531, 2 solutions

Make Object Immutable ->

Medium, #2692, 1 solutions

Make String a Subsequence Using Cyclic Increments ->

Medium, #2825, 2 solutions

Make The String Great ->

Easy, #1544, 2 solutions

Make Three Strings Equal ->

Easy, #2937, 2 solutions

Longest Substring with At Most K Distinct Characters ->

Medium, #340, 3 solutions

Longest Valid Parentheses ->

Hard, #32, 4 solutions

Masking Personal Information ->

Medium, #831, 2 solutions

Match Alphanumerical Pattern in Matrix I ->

Medium, #3078, 2 solutions

Matrix Cells in Distance Order ->

Easy, #1030, 4 solutions

Matrix Diagonal Sum ->

Easy, #1572, 2 solutions

Matrix Zigzag Traversal ->

Easy, #185, 1 solutions

Matrix Similarity After Cyclic Shifts ->

Easy, #2946, 2 solutions