LeetCode Problems with solutions

This repository consists of leetcode problems solution.

1. contest solution (weekly and bi-weekly contest)
2. daily challenge
3. daily practise problems

I made this repository to keep track of my competitive coding and DSA problem solving skills

LeetCode Topics

Math

0007-reverse-integer
0009-palindrome-number
0189-rotate-array
0509-fibonacci-number
2033-minimum-operations-to-make-a-uni-value-grid
2946-matrix-similarity-after-cyclic-shifts
3464-maximize-the-distance-between-points-on-a-square
3761-minimum-absolute-distance-between-mirror-pairs
3783-mirror-distance-of-an-integer

Two Pointers

0026-remove-duplicates-from-sorted-array
0061-rotate-list
0075-sort-colors
0125-valid-palindrome
0189-rotate-array
0283-move-zeroes
1855-maximum-distance-between-a-pair-of-values
2149-rearrange-array-elements-by-sign
3643-flip-square-submatrix-vertically

String

0125-valid-palindrome
0657-robot-return-to-origin
0796-rotate-string
1320-minimum-distance-to-type-a-word-using-two-fingers
2075-decode-the-slanted-ciphertext
2452-words-within-two-edits-of-dictionary
2515-shortest-distance-to-target-string-in-a-circular-array
2573-find-the-string-with-lcp
2833-furthest-point-from-origin
2839-check-if-strings-can-be-made-equal-with-operations-i
2840-check-if-strings-can-be-made-equal-with-operations-ii
3474-lexicographically-smallest-generated-string

Dynamic Programming

0053-maximum-subarray
0121-best-time-to-buy-and-sell-stock
0509-fibonacci-number
1320-minimum-distance-to-type-a-word-using-two-fingers
1594-maximum-non-negative-product-in-a-matrix
2463-minimum-total-distance-traveled
2573-find-the-string-with-lcp
3225-maximum-score-from-grid-operations
3418-maximum-amount-of-money-robot-can-earn
3661-maximum-walls-destroyed-by-robots
3742-maximum-path-score-in-a-grid

Recursion

0509-fibonacci-number

Memoization

0509-fibonacci-number

Array

0001-two-sum
0026-remove-duplicates-from-sorted-array
0053-maximum-subarray
0075-sort-colors
0121-best-time-to-buy-and-sell-stock
0136-single-number
0153-find-minimum-in-rotated-sorted-array
0154-find-minimum-in-rotated-sorted-array-ii
0169-majority-element
0189-rotate-array
0283-move-zeroes
0485-max-consecutive-ones
0874-walking-robot-simulation
1391-check-if-there-is-a-valid-path-in-a-grid
1559-detect-cycles-in-2d-grid
1594-maximum-non-negative-product-in-a-matrix
1722-minimize-hamming-distance-after-swap-operations
1752-check-if-array-is-sorted-and-rotated
1838-frequency-of-the-most-frequent-element
1848-minimum-distance-to-the-target-element
1855-maximum-distance-between-a-pair-of-values
1886-determine-whether-matrix-can-be-obtained-by-rotation
2033-minimum-operations-to-make-a-uni-value-grid
2078-two-furthest-houses-with-different-colors
2149-rearrange-array-elements-by-sign
2452-words-within-two-edits-of-dictionary
2463-minimum-total-distance-traveled
2515-shortest-distance-to-target-string-in-a-circular-array
2573-find-the-string-with-lcp
2615-sum-of-distances
2751-robot-collisions
2906-construct-product-matrix
2946-matrix-similarity-after-cyclic-shifts
3225-maximum-score-from-grid-operations
3418-maximum-amount-of-money-robot-can-earn
3464-maximize-the-distance-between-points-on-a-square
3488-closest-equal-element-queries
3546-equal-sum-grid-partition-i
3548-equal-sum-grid-partition-ii
3567-minimum-absolute-difference-in-sliding-submatrix
3643-flip-square-submatrix-vertically
3653-xor-after-range-multiplication-queries-i
3655-xor-after-range-multiplication-queries-ii
3661-maximum-walls-destroyed-by-robots
3740-minimum-distance-between-three-equal-elements-i
3741-minimum-distance-between-three-equal-elements-ii
3742-maximum-path-score-in-a-grid
3761-minimum-absolute-distance-between-mirror-pairs

Binary Search

0153-find-minimum-in-rotated-sorted-array
0154-find-minimum-in-rotated-sorted-array-ii
1838-frequency-of-the-most-frequent-element
1855-maximum-distance-between-a-pair-of-values
3464-maximize-the-distance-between-points-on-a-square
3488-closest-equal-element-queries
3661-maximum-walls-destroyed-by-robots

Greedy

1838-frequency-of-the-most-frequent-element
2078-two-furthest-houses-with-different-colors
2573-find-the-string-with-lcp
3474-lexicographically-smallest-generated-string

Sliding Window

1838-frequency-of-the-most-frequent-element

Sorting

0075-sort-colors
0169-majority-element
1838-frequency-of-the-most-frequent-element
2033-minimum-operations-to-make-a-uni-value-grid
2463-minimum-total-distance-traveled
2751-robot-collisions
2840-check-if-strings-can-be-made-equal-with-operations-ii
3464-maximize-the-distance-between-points-on-a-square
3567-minimum-absolute-difference-in-sliding-submatrix
3661-maximum-walls-destroyed-by-robots

Prefix Sum

1838-frequency-of-the-most-frequent-element
2615-sum-of-distances
2906-construct-product-matrix
3225-maximum-score-from-grid-operations
3546-equal-sum-grid-partition-i
3548-equal-sum-grid-partition-ii

Bit Manipulation

0136-single-number

Hash Table

0001-two-sum
0169-majority-element
0874-walking-robot-simulation
2615-sum-of-distances
2840-check-if-strings-can-be-made-equal-with-operations-ii
3488-closest-equal-element-queries
3548-equal-sum-grid-partition-ii
3740-minimum-distance-between-three-equal-elements-i
3741-minimum-distance-between-three-equal-elements-ii
3761-minimum-absolute-distance-between-mirror-pairs

Divide and Conquer

0053-maximum-subarray
0169-majority-element
3653-xor-after-range-multiplication-queries-i
3655-xor-after-range-multiplication-queries-ii

Counting

0169-majority-element
2833-furthest-point-from-origin

Matrix

1391-check-if-there-is-a-valid-path-in-a-grid
1559-detect-cycles-in-2d-grid
1594-maximum-non-negative-product-in-a-matrix
1886-determine-whether-matrix-can-be-obtained-by-rotation
2033-minimum-operations-to-make-a-uni-value-grid
2573-find-the-string-with-lcp
2906-construct-product-matrix
2946-matrix-similarity-after-cyclic-shifts
3225-maximum-score-from-grid-operations
3418-maximum-amount-of-money-robot-can-earn
3546-equal-sum-grid-partition-i
3548-equal-sum-grid-partition-ii
3567-minimum-absolute-difference-in-sliding-submatrix
3643-flip-square-submatrix-vertically
3742-maximum-path-score-in-a-grid

Enumeration

3546-equal-sum-grid-partition-i
3548-equal-sum-grid-partition-ii

Simulation

0657-robot-return-to-origin
0874-walking-robot-simulation
2069-walking-robot-simulation-ii
2075-decode-the-slanted-ciphertext
2149-rearrange-array-elements-by-sign
2751-robot-collisions
2946-matrix-similarity-after-cyclic-shifts
3653-xor-after-range-multiplication-queries-i

String Matching

0796-rotate-string
3474-lexicographically-smallest-generated-string

Stack

2751-robot-collisions

Union-Find

1391-check-if-there-is-a-valid-path-in-a-grid
1559-detect-cycles-in-2d-grid
1722-minimize-hamming-distance-after-swap-operations
2573-find-the-string-with-lcp

Design

2069-walking-robot-simulation-ii

Depth-First Search

1391-check-if-there-is-a-valid-path-in-a-grid
1559-detect-cycles-in-2d-grid
1722-minimize-hamming-distance-after-swap-operations

Trie

2452-words-within-two-edits-of-dictionary

Geometry

3464-maximize-the-distance-between-points-on-a-square

Breadth-First Search

1391-check-if-there-is-a-valid-path-in-a-grid
1559-detect-cycles-in-2d-grid

Linked List

0061-rotate-list