Leetcode

LeetCode problems

LeetCode Topics

Array

0001-two-sum
0011-container-with-most-water
0015-3sum
0026-remove-duplicates-from-sorted-array
0027-remove-element
0053-maximum-subarray
0088-merge-sorted-array
0121-best-time-to-buy-and-sell-stock
0167-two-sum-ii-input-array-is-sorted
0169-majority-element
0189-rotate-array
0209-minimum-size-subarray-sum
0238-product-of-array-except-self
0239-sliding-window-maximum
0283-move-zeroes
0724-find-pivot-index
0978-valid-mountain-array
2552-maximum-sum-of-distinct-subarrays-with-length-k

Hash Table

0001-two-sum
0003-longest-substring-without-repeating-characters
0169-majority-element
0424-longest-repeating-character-replacement
0567-permutation-in-string
2552-maximum-sum-of-distinct-subarrays-with-length-k

Dynamic Programming

0053-maximum-subarray
0121-best-time-to-buy-and-sell-stock

Two Pointers

0011-container-with-most-water
0015-3sum
0026-remove-duplicates-from-sorted-array
0027-remove-element
0088-merge-sorted-array
0167-two-sum-ii-input-array-is-sorted
0189-rotate-array
0283-move-zeroes
0567-permutation-in-string

Greedy

0011-container-with-most-water

Sorting

0015-3sum
0088-merge-sorted-array
0169-majority-element

Math

0189-rotate-array

Binary Search

0167-two-sum-ii-input-array-is-sorted
0209-minimum-size-subarray-sum

Divide and Conquer

0053-maximum-subarray
0169-majority-element

Prefix Sum

0209-minimum-size-subarray-sum
0238-product-of-array-except-self
0724-find-pivot-index

Counting

0169-majority-element

String

0003-longest-substring-without-repeating-characters
0424-longest-repeating-character-replacement
0567-permutation-in-string

Sliding Window

0003-longest-substring-without-repeating-characters
0209-minimum-size-subarray-sum
0239-sliding-window-maximum
0424-longest-repeating-character-replacement
0567-permutation-in-string
2552-maximum-sum-of-distinct-subarrays-with-length-k

Queue

0239-sliding-window-maximum

Heap (Priority Queue)

0239-sliding-window-maximum

Monotonic Queue

0239-sliding-window-maximum