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

LeetCode Topics

Math

0007-reverse-integer
0009-palindrome-number
0048-rotate-image
0050-powx-n
0066-plus-one
0067-add-binary
0069-sqrtx
0070-climbing-stairs
0089-gray-code
0149-max-points-on-a-line
0171-excel-sheet-column-number
0231-power-of-two
0258-add-digits
0263-ugly-number
0268-missing-number
0292-nim-game
0326-power-of-three
0342-power-of-four
0367-valid-perfect-square
0415-add-strings
0441-arranging-coins
0504-base-7
0507-perfect-number
0633-sum-of-square-numbers
0830-largest-triangle-area
1013-fibonacci-number
1236-n-th-tribonacci-number
1421-find-numbers-with-even-number-of-digits
1610-xor-operation-in-an-array
1630-count-odd-numbers-in-an-interval-range
1635-number-of-good-pairs
1642-water-bottles
1844-maximum-number-of-balls-in-a-box
2083-three-divisors
2383-add-two-integers
2507-number-of-common-factors
2630-alternating-digit-sum
2812-find-the-maximum-achievable-number
3321-type-of-triangle
3515-find-if-digit-game-can-be-won

Array

0015-3sum
0035-search-insert-position
0048-rotate-image
0053-maximum-subarray
0066-plus-one
0118-pascals-triangle
0136-single-number
0149-max-points-on-a-line
0167-two-sum-ii-input-array-is-sorted
0268-missing-number
0349-intersection-of-two-arrays
0455-assign-cookies
0748-largest-number-at-least-twice-of-others
0792-binary-search
0830-largest-triangle-area
0924-fair-candy-swap
1421-find-numbers-with-even-number-of-digits
1476-count-negative-numbers-in-a-sorted-matrix
1496-lucky-numbers-in-a-matrix
1635-number-of-good-pairs
2756-buy-two-chocolates
3321-type-of-triangle
3515-find-if-digit-game-can-be-won

Binary Search

0035-search-insert-position
0069-sqrtx
0167-two-sum-ii-input-array-is-sorted
0268-missing-number
0349-intersection-of-two-arrays
0367-valid-perfect-square
0374-guess-number-higher-or-lower
0441-arranging-coins
0633-sum-of-square-numbers
0792-binary-search
0924-fair-candy-swap
1476-count-negative-numbers-in-a-sorted-matrix

String

0028-find-the-index-of-the-first-occurrence-in-a-string
0058-length-of-last-word
0067-add-binary
0171-excel-sheet-column-number
0242-valid-anagram
0389-find-the-difference
0415-add-strings
0657-robot-return-to-origin

Bit Manipulation

0067-add-binary
0089-gray-code
0136-single-number
0231-power-of-two
0268-missing-number
0342-power-of-four
0389-find-the-difference
1610-xor-operation-in-an-array

Simulation

0067-add-binary
0258-add-digits
0415-add-strings
0657-robot-return-to-origin
1642-water-bottles

Hash Table

0149-max-points-on-a-line
0242-valid-anagram
0268-missing-number
0349-intersection-of-two-arrays
0389-find-the-difference
0924-fair-candy-swap
1635-number-of-good-pairs
1844-maximum-number-of-balls-in-a-box

Two Pointers

0015-3sum
0028-find-the-index-of-the-first-occurrence-in-a-string
0167-two-sum-ii-input-array-is-sorted
0349-intersection-of-two-arrays
0455-assign-cookies
0633-sum-of-square-numbers

Sorting

0015-3sum
0242-valid-anagram
0268-missing-number
0349-intersection-of-two-arrays
0389-find-the-difference
0455-assign-cookies
0748-largest-number-at-least-twice-of-others
0924-fair-candy-swap
2756-buy-two-chocolates
3321-type-of-triangle

String Matching

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

Interactive

0374-guess-number-higher-or-lower

Greedy

0455-assign-cookies
2756-buy-two-chocolates

Counting

1635-number-of-good-pairs
1844-maximum-number-of-balls-in-a-box

Divide and Conquer

0053-maximum-subarray

Dynamic Programming

0053-maximum-subarray
0070-climbing-stairs
0118-pascals-triangle
1013-fibonacci-number
1236-n-th-tribonacci-number

Matrix

0048-rotate-image
1476-count-negative-numbers-in-a-sorted-matrix
1496-lucky-numbers-in-a-matrix

Memoization

0070-climbing-stairs
1013-fibonacci-number
1236-n-th-tribonacci-number

Recursion

0025-reverse-nodes-in-k-group
0050-powx-n
0231-power-of-two
0326-power-of-three
0342-power-of-four
1013-fibonacci-number

Enumeration

2083-three-divisors
2507-number-of-common-factors

Number Theory

0258-add-digits
2083-three-divisors
2507-number-of-common-factors

Brainteaser

0292-nim-game

Game Theory

0292-nim-game

Backtracking

0089-gray-code

Geometry

0149-max-points-on-a-line
0830-largest-triangle-area

Linked List

0025-reverse-nodes-in-k-group

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