Leetcode_Solved

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

LeetCode Topics

Array

0001-two-sum
0004-median-of-two-sorted-arrays
0026-remove-duplicates-from-sorted-array
0027-remove-element
0033-search-in-rotated-sorted-array
0035-search-insert-position
0041-first-missing-positive
0066-plus-one
0074-search-a-2d-matrix
0075-sort-colors
0080-remove-duplicates-from-sorted-array-ii
0081-search-in-rotated-sorted-array-ii
0136-single-number
0137-single-number-ii
0153-find-minimum-in-rotated-sorted-array
0154-find-minimum-in-rotated-sorted-array-ii
0162-find-peak-element
0169-majority-element
0189-rotate-array
0204-count-primes
0215-kth-largest-element-in-an-array
0217-contains-duplicate
0219-contains-duplicate-ii
0240-search-a-2d-matrix-ii
0268-missing-number
0283-move-zeroes
0287-find-the-duplicate-number
0349-intersection-of-two-arrays
0442-find-all-duplicates-in-an-array
0540-single-element-in-a-sorted-array
0628-maximum-product-of-three-numbers
0909-stone-game
0948-sort-an-array
2502-sort-the-people
2724-convert-an-array-into-a-2d-array-with-conditions
3242-count-elements-with-maximum-frequency
3476-find-minimum-operations-to-make-all-elements-divisible-by-three

Hash Table

0001-two-sum
0041-first-missing-positive
0169-majority-element
0205-isomorphic-strings
0217-contains-duplicate
0219-contains-duplicate-ii
0242-valid-anagram
0268-missing-number
0349-intersection-of-two-arrays
0383-ransom-note
0389-find-the-difference
0442-find-all-duplicates-in-an-array
0782-jewels-and-stones
1297-maximum-number-of-balloons
2502-sort-the-people
2724-convert-an-array-into-a-2d-array-with-conditions
3242-count-elements-with-maximum-frequency

Math

0007-reverse-integer
0009-palindrome-number
0029-divide-two-integers
0043-multiply-strings
0050-powx-n
0066-plus-one
0067-add-binary
0069-sqrtx
0172-factorial-trailing-zeroes
0189-rotate-array
0204-count-primes
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
0371-sum-of-two-integers
0405-convert-a-number-to-hexadecimal
0412-fizz-buzz
0415-add-strings
0507-perfect-number
0628-maximum-product-of-three-numbers
0672-bulb-switcher-ii
0909-stone-game
1013-fibonacci-number
1086-divisor-game
1630-count-odd-numbers-in-an-interval-range
1642-water-bottles
1806-count-of-matches-in-tournament
2083-three-divisors
2383-add-two-integers
2491-smallest-even-multiple
2507-number-of-common-factors
2541-sum-of-number-and-its-reverse
2748-calculate-delayed-arrival-time
2752-sum-multiples
3172-divisible-and-non-divisible-sums-difference
3371-harshad-number
3462-vowels-game-in-a-string
3476-find-minimum-operations-to-make-all-elements-divisible-by-three

Bit Manipulation

0029-divide-two-integers
0067-add-binary
0136-single-number
0137-single-number-ii
0231-power-of-two
0268-missing-number
0287-find-the-duplicate-number
0342-power-of-four
0371-sum-of-two-integers
0389-find-the-difference
0405-convert-a-number-to-hexadecimal
0672-bulb-switcher-ii

Recursion

0050-powx-n
0231-power-of-two
0326-power-of-three
0342-power-of-four
1013-fibonacci-number

String

0028-find-the-index-of-the-first-occurrence-in-a-string
0043-multiply-strings
0058-length-of-last-word
0065-valid-number
0067-add-binary
0125-valid-palindrome
0151-reverse-words-in-a-string
0205-isomorphic-strings
0242-valid-anagram
0344-reverse-string
0383-ransom-note
0389-find-the-difference
0392-is-subsequence
0405-convert-a-number-to-hexadecimal
0412-fizz-buzz
0415-add-strings
0520-detect-capital
0551-student-attendance-record-i
0657-robot-return-to-origin
0742-to-lower-case
0782-jewels-and-stones
0812-rotate-string
1297-maximum-number-of-balloons
2502-sort-the-people
3462-vowels-game-in-a-string

Sorting

0075-sort-colors
0169-majority-element
0215-kth-largest-element-in-an-array
0217-contains-duplicate
0242-valid-anagram
0268-missing-number
0349-intersection-of-two-arrays
0389-find-the-difference
0628-maximum-product-of-three-numbers
0948-sort-an-array
2502-sort-the-people

Two Pointers

0026-remove-duplicates-from-sorted-array
0027-remove-element
0028-find-the-index-of-the-first-occurrence-in-a-string
0075-sort-colors
0080-remove-duplicates-from-sorted-array-ii
0125-valid-palindrome
0151-reverse-words-in-a-string
0189-rotate-array
0283-move-zeroes
0287-find-the-duplicate-number
0344-reverse-string
0349-intersection-of-two-arrays
0392-is-subsequence

Counting

0169-majority-element
0383-ransom-note
1297-maximum-number-of-balloons
3242-count-elements-with-maximum-frequency

Binary Search

0004-median-of-two-sorted-arrays
0033-search-in-rotated-sorted-array
0035-search-insert-position
0069-sqrtx
0074-search-a-2d-matrix
0081-search-in-rotated-sorted-array-ii
0153-find-minimum-in-rotated-sorted-array
0154-find-minimum-in-rotated-sorted-array-ii
0162-find-peak-element
0240-search-a-2d-matrix-ii
0268-missing-number
0287-find-the-duplicate-number
0349-intersection-of-two-arrays
0367-valid-perfect-square
0540-single-element-in-a-sorted-array

Dynamic Programming

0392-is-subsequence
0909-stone-game
1013-fibonacci-number
1086-divisor-game

Memoization

1013-fibonacci-number

Divide and Conquer

0004-median-of-two-sorted-arrays
0169-majority-element
0215-kth-largest-element-in-an-array
0240-search-a-2d-matrix-ii
0948-sort-an-array

Heap (Priority Queue)

0215-kth-largest-element-in-an-array
0948-sort-an-array

Merge Sort

0948-sort-an-array

Bucket Sort

0948-sort-an-array

Radix Sort

0948-sort-an-array

Counting Sort

0948-sort-an-array

Simulation

0043-multiply-strings
0067-add-binary
0258-add-digits
0412-fizz-buzz
0415-add-strings
0657-robot-return-to-origin
1642-water-bottles
1806-count-of-matches-in-tournament

Enumeration

0204-count-primes
2083-three-divisors
2507-number-of-common-factors
2541-sum-of-number-and-its-reverse

Number Theory

0204-count-primes
0258-add-digits
2083-three-divisors
2491-smallest-even-multiple
2507-number-of-common-factors

Brainteaser

0292-nim-game
1086-divisor-game
3462-vowels-game-in-a-string

Game Theory

0292-nim-game
0909-stone-game
1086-divisor-game
3462-vowels-game-in-a-string

String Matching

0028-find-the-index-of-the-first-occurrence-in-a-string
0812-rotate-string

Sliding Window

0219-contains-duplicate-ii

Depth-First Search

0672-bulb-switcher-ii

Breadth-First Search

0672-bulb-switcher-ii

Matrix

0074-search-a-2d-matrix
0240-search-a-2d-matrix-ii

Quickselect

0215-kth-largest-element-in-an-array