leet-code-problems

A collection of LeetCode questions to ace the coding interview! - Created using LeetHub v2

LeetCode Topics

Math

0009-palindrome-number
0013-roman-to-integer
0066-plus-one
0069-sqrtx
0268-missing-number
1031-add-to-array-form-of-integer
1378-cells-with-odd-values-in-a-matrix
1406-subtract-the-product-and-sum-of-digits-of-an-integer
1421-find-numbers-with-even-number-of-digits
1426-find-n-unique-integers-sum-up-to-zero
1444-number-of-steps-to-reduce-a-number-to-zero
1635-number-of-good-pairs

String

0013-roman-to-integer
0014-longest-common-prefix
0028-find-the-index-of-the-first-occurrence-in-a-string
0058-length-of-last-word
0125-valid-palindrome
0344-reverse-string
0345-reverse-vowels-of-a-string
0742-to-lower-case
0953-reverse-only-letters
1205-defanging-an-ip-address
1651-shuffle-string
1781-check-if-two-string-arrays-are-equivalent
1797-goal-parser-interpretation
1823-determine-if-string-halves-are-alike
1899-count-items-matching-a-rule
1960-check-if-the-sentence-is-pangram

Trie

0014-longest-common-prefix

Array

0001-two-sum
0004-median-of-two-sorted-arrays
0026-remove-duplicates-from-sorted-array
0027-remove-element
0035-search-insert-position
0041-first-missing-positive
0053-maximum-subarray
0066-plus-one
0073-set-matrix-zeroes
0121-best-time-to-buy-and-sell-stock
0136-single-number
0217-contains-duplicate
0268-missing-number
0283-move-zeroes
0287-find-the-duplicate-number
0442-find-all-duplicates-in-an-array
0448-find-all-numbers-disappeared-in-an-array
0645-set-mismatch
0792-binary-search
0861-flipping-an-image
0898-transpose-matrix
1031-add-to-array-form-of-integer
1378-cells-with-odd-values-in-a-matrix
1421-find-numbers-with-even-number-of-digits
1426-find-n-unique-integers-sum-up-to-zero
1482-how-many-numbers-are-smaller-than-the-current-number
1496-lucky-numbers-in-a-matrix
1505-create-target-array-in-the-given-order
1528-kids-with-the-greatest-number-of-candies
1580-shuffle-the-array
1603-running-sum-of-1d-array
1635-number-of-good-pairs
1651-shuffle-string
1677-matrix-diagonal-sum
1781-check-if-two-string-arrays-are-equivalent
1791-richest-customer-wealth
1833-find-the-highest-altitude
1899-count-items-matching-a-rule
2015-determine-whether-matrix-can-be-obtained-by-rotation
2048-build-array-from-permutation
2058-concatenation-of-array

Hash Table

0001-two-sum
0013-roman-to-integer
0041-first-missing-positive
0073-set-matrix-zeroes
0217-contains-duplicate
0268-missing-number
0442-find-all-duplicates-in-an-array
0448-find-all-numbers-disappeared-in-an-array
0645-set-mismatch
1482-how-many-numbers-are-smaller-than-the-current-number
1635-number-of-good-pairs
1960-check-if-the-sentence-is-pangram

Sorting

0217-contains-duplicate
0268-missing-number
0645-set-mismatch
1482-how-many-numbers-are-smaller-than-the-current-number

Two Pointers

0026-remove-duplicates-from-sorted-array
0027-remove-element
0028-find-the-index-of-the-first-occurrence-in-a-string
0125-valid-palindrome
0283-move-zeroes
0287-find-the-duplicate-number
0344-reverse-string
0345-reverse-vowels-of-a-string
0861-flipping-an-image
0953-reverse-only-letters

Divide and Conquer

0004-median-of-two-sorted-arrays
0053-maximum-subarray

Dynamic Programming

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

Bit Manipulation

0136-single-number
0268-missing-number
0287-find-the-duplicate-number
0645-set-mismatch
0861-flipping-an-image
1444-number-of-steps-to-reduce-a-number-to-zero

String Matching

0028-find-the-index-of-the-first-occurrence-in-a-string

Binary Search

0004-median-of-two-sorted-arrays
0035-search-insert-position
0069-sqrtx
0268-missing-number
0287-find-the-duplicate-number
0792-binary-search

Matrix

0073-set-matrix-zeroes
0861-flipping-an-image
0898-transpose-matrix
1496-lucky-numbers-in-a-matrix
1677-matrix-diagonal-sum
1791-richest-customer-wealth
2015-determine-whether-matrix-can-be-obtained-by-rotation

Simulation

0861-flipping-an-image
0898-transpose-matrix
1378-cells-with-odd-values-in-a-matrix
1505-create-target-array-in-the-given-order
2048-build-array-from-permutation
2058-concatenation-of-array

Prefix Sum

1603-running-sum-of-1d-array
1833-find-the-highest-altitude

Counting

1635-number-of-good-pairs
1823-determine-if-string-halves-are-alike

Counting Sort

1482-how-many-numbers-are-smaller-than-the-current-number