LeetCode DSA Challenges: Visit Here

This repo contains all of my personal LeetCode solutions. The coding solutions provided within this repo are entirely provided by me, Shubham Kumar Singh.

All solutions were made with the sole intent of solving the corresponding LeetCode challenge. Solutions may not be as efficient as possible.

Optimizations

I consistently refactor and optimize my code, sometimes for efficiency, sometimes for readability.

Lessons Learned:

The Biggest Lesson I learned in tackling this endless supply of questions is understanding that there is a long way to go. Not being able to answer a question is okay, as long as you take the initiative to improve.

Name		Name	Last commit message	Last commit date
Latest commit History 562 Commits
0001-two-sum		0001-two-sum
0011-container-with-most-water		0011-container-with-most-water
0014-longest-common-prefix		0014-longest-common-prefix
0015-3sum		0015-3sum
0021-merge-two-sorted-lists		0021-merge-two-sorted-lists
0026-remove-duplicates-from-sorted-array		0026-remove-duplicates-from-sorted-array
0027-remove-element		0027-remove-element
0033-search-in-rotated-sorted-array		0033-search-in-rotated-sorted-array
0034-find-first-and-last-position-of-element-in-sorted-array		0034-find-first-and-last-position-of-element-in-sorted-array
0035-search-insert-position		0035-search-insert-position
0036-valid-sudoku		0036-valid-sudoku
0042-trapping-rain-water		0042-trapping-rain-water
0049-group-anagrams		0049-group-anagrams
0053-maximum-subarray		0053-maximum-subarray
0058-length-of-last-word		0058-length-of-last-word
0066-plus-one		0066-plus-one
0075-sort-colors		0075-sort-colors
0078-subsets		0078-subsets
0083-remove-duplicates-from-sorted-list		0083-remove-duplicates-from-sorted-list
0104-maximum-depth-of-binary-tree		0104-maximum-depth-of-binary-tree
0118-pascals-triangle		0118-pascals-triangle
0121-best-time-to-buy-and-sell-stock		0121-best-time-to-buy-and-sell-stock
0122-best-time-to-buy-and-sell-stock-ii		0122-best-time-to-buy-and-sell-stock-ii
0125-valid-palindrome		0125-valid-palindrome
0128-longest-consecutive-sequence		0128-longest-consecutive-sequence
0136-single-number		0136-single-number
0141-linked-list-cycle		0141-linked-list-cycle
0142-linked-list-cycle-ii		0142-linked-list-cycle-ii
0160-intersection-of-two-linked-lists		0160-intersection-of-two-linked-lists
0167-two-sum-ii-input-array-is-sorted		0167-two-sum-ii-input-array-is-sorted
0169-majority-element		0169-majority-element
0189-rotate-array		0189-rotate-array
0205-isomorphic-strings		0205-isomorphic-strings
0217-contains-duplicate		0217-contains-duplicate
0238-product-of-array-except-self		0238-product-of-array-except-self
0242-valid-anagram		0242-valid-anagram
0283-move-zeroes		0283-move-zeroes
0290-word-pattern		0290-word-pattern
0326-power-of-three		0326-power-of-three
0347-top-k-frequent-elements		0347-top-k-frequent-elements
0350-intersection-of-two-arrays-ii		0350-intersection-of-two-arrays-ii
0378-kth-smallest-element-in-a-sorted-matrix		0378-kth-smallest-element-in-a-sorted-matrix
0392-is-subsequence		0392-is-subsequence
0448-find-all-numbers-disappeared-in-an-array		0448-find-all-numbers-disappeared-in-an-array
0485-max-consecutive-ones		0485-max-consecutive-ones
0496-next-greater-element-i		0496-next-greater-element-i
0509-fibonacci-number		0509-fibonacci-number
0566-reshape-the-matrix		0566-reshape-the-matrix
0605-can-place-flowers		0605-can-place-flowers
0680-valid-palindrome-ii		0680-valid-palindrome-ii
0704-binary-search		0704-binary-search
0709-to-lower-case		0709-to-lower-case
0724-find-pivot-index		0724-find-pivot-index
0744-find-smallest-letter-greater-than-target		0744-find-smallest-letter-greater-than-target
0832-flipping-an-image		0832-flipping-an-image
0852-peak-index-in-a-mountain-array		0852-peak-index-in-a-mountain-array
0867-transpose-matrix		0867-transpose-matrix
0876-middle-of-the-linked-list		0876-middle-of-the-linked-list
0929-unique-email-addresses		0929-unique-email-addresses
0989-add-to-array-form-of-integer		0989-add-to-array-form-of-integer
1108-defanging-an-ip-address		1108-defanging-an-ip-address
1189-maximum-number-of-balloons		1189-maximum-number-of-balloons
1252-cells-with-odd-values-in-a-matrix		1252-cells-with-odd-values-in-a-matrix
1295-find-numbers-with-even-number-of-digits		1295-find-numbers-with-even-number-of-digits
1299-replace-elements-with-greatest-element-on-right-side		1299-replace-elements-with-greatest-element-on-right-side
1304-find-n-unique-integers-sum-up-to-zero		1304-find-n-unique-integers-sum-up-to-zero
1309-decrypt-string-from-alphabet-to-integer-mapping		1309-decrypt-string-from-alphabet-to-integer-mapping
1310-xor-queries-of-a-subarray		1310-xor-queries-of-a-subarray
1342-number-of-steps-to-reduce-a-number-to-zero		1342-number-of-steps-to-reduce-a-number-to-zero
1365-how-many-numbers-are-smaller-than-the-current-number		1365-how-many-numbers-are-smaller-than-the-current-number
1380-lucky-numbers-in-a-matrix		1380-lucky-numbers-in-a-matrix
1389-create-target-array-in-the-given-order		1389-create-target-array-in-the-given-order
1431-kids-with-the-greatest-number-of-candies		1431-kids-with-the-greatest-number-of-candies
1470-shuffle-the-array		1470-shuffle-the-array
1480-running-sum-of-1d-array		1480-running-sum-of-1d-array
1486-xor-operation-in-an-array		1486-xor-operation-in-an-array
1512-number-of-good-pairs		1512-number-of-good-pairs
1528-shuffle-string		1528-shuffle-string
1572-matrix-diagonal-sum		1572-matrix-diagonal-sum
1668-maximum-repeating-substring		1668-maximum-repeating-substring
1672-richest-customer-wealth		1672-richest-customer-wealth
1678-goal-parser-interpretation		1678-goal-parser-interpretation
1704-determine-if-string-halves-are-alike		1704-determine-if-string-halves-are-alike
1732-find-the-highest-altitude		1732-find-the-highest-altitude
1768-merge-strings-alternately		1768-merge-strings-alternately
1773-count-items-matching-a-rule		1773-count-items-matching-a-rule
1832-check-if-the-sentence-is-pangram		1832-check-if-the-sentence-is-pangram
1854-maximum-population-year		1854-maximum-population-year
1859-sorting-the-sentence		1859-sorting-the-sentence
1920-build-array-from-permutation		1920-build-array-from-permutation
1929-concatenation-of-array		1929-concatenation-of-array
2149-rearrange-array-elements-by-sign		2149-rearrange-array-elements-by-sign
2206-divide-array-into-equal-pairs		2206-divide-array-into-equal-pairs
2418-sort-the-people		2418-sort-the-people
2535-difference-between-element-sum-and-digit-sum-of-an-array		2535-difference-between-element-sum-and-digit-sum-of-an-array
2574-left-and-right-sum-differences		2574-left-and-right-sum-differences
2652-sum-multiples		2652-sum-multiples
2656-maximum-sum-with-exactly-k-elements		2656-maximum-sum-with-exactly-k-elements
7-reverse-integer		7-reverse-integer
Easy		Easy

shubhamsinghbundela/Leetcode

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