Index Of Problems
Click below to expand and view problems.
Arrays
- https://leetcode.com/problems/add-to-array-form-of-integer/
Easy - https://leetcode.com/problems/all-divisions-with-the-highest-score-of-a-binary-array/
Medium - https://leetcode.com/problems/build-array-from-permutation/
Easy - https://leetcode.com/problems/cells-with-odd-values-in-a-matrix/
Easy - https://leetcode.com/problems/check-if-every-row-and-column-contains-all-numbers/
Easy - https://leetcode.com/problems/check-if-the-sentence-is-pangram/
Easy - https://leetcode.com/problems/combination-sum/
Medium - https://leetcode.com/problems/concatenation-of-array/
Easy - https://leetcode.com/problems/contiguous-array/
Medium - https://leetcode.com/problems/count-elements-with-strictly-smaller-and-greater-elements/
Easy - https://leetcode.com/problems/count-items-matching-a-rule/
Easy - https://leetcode.com/problems/create-target-array-in-the-given-order/
Easy - https://leetcode.com/problems/determine-whether-matrix-can-be-obtained-by-rotation/
Easy - https://leetcode.com/problems/find-all-lonely-numbers-in-the-array/
Medium - https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/
Medium - https://leetcode.com/problems/find-first-palindromic-string-in-the-array/
Easy - https://leetcode.com/problems/find-n-unique-integers-sum-up-to-zero/
Easy - https://leetcode.com/problems/find-numbers-with-even-number-of-digits/
Easy - https://leetcode.com/problems/find-the-highest-altitude/
Easy - https://leetcode.com/problems/flipping-an-image/
Easy - https://leetcode.com/problems/house-robber/
Medium - https://leetcode.com/problems/how-many-numbers-are-smaller-than-the-current-number/
Easy - https://leetcode.com/problems/intersection-of-two-arrays-ii/
Easy - https://leetcode.com/problems/jump-game/
Medium - https://leetcode.com/problems/keep-multiplying-found-values-by-two/
Easy - https://leetcode.com/problems/kids-with-the-greatest-number-of-candies/
Easy - https://leetcode.com/problems/kids-with-the-greatest-number-of-candies/
Easy - https://leetcode.com/problems/lucky-numbers-in-a-matrix/
Easy - https://leetcode.com/problems/majority-element/
Easy - https://leetcode.com/problems/matrix-diagonal-sum/
Easy - https://leetcode.com/problems/matrix-diagonal-sum/
Easy - https://leetcode.com/problems/maximize-distance-to-closest-person/
Medium - https://leetcode.com/problems/maximum-population-year/
Easy - https://leetcode.com/problems/maximum-subarray/
Easy - https://leetcode.com/problems/median-of-two-sorted-arrays/
Hard - https://leetcode.com/problems/merge-sorted-array/
Easy - https://leetcode.com/problems/minimum-swaps-to-group-all-1s-together-ii/
Medium - https://leetcode.com/problems/number-of-good-pairs/
Easy - https://leetcode.com/problems/number-of-smooth-descent-periods-of-a-stock/
Medium - https://leetcode.com/problems/partition-array-according-to-given-pivot/
Medium - https://leetcode.com/problems/pascals-triangle/
Easy - https://leetcode.com/problems/permutations-ii/
Medium - https://leetcode.com/problems/plus-one/
Easy - https://leetcode.com/problems/product-of-array-except-self/
Medium - https://leetcode.com/problems/rearrange-array-elements-by-sign/
Medium - https://leetcode.com/problems/remove-duplicates-from-sorted-array/
Easy - https://leetcode.com/problems/reshape-the-matrix/
Easy - https://leetcode.com/problems/richest-customer-wealth/
Easy - https://leetcode.com/problems/rotate-array/
Medium - https://leetcode.com/problems/running-sum-of-1d-array/
Easy - https://leetcode.com/problems/set-matrix-zeroes/
Medium - https://leetcode.com/problems/shuffle-the-array/
Easy - https://leetcode.com/problems/sort-colors/
Medium - https://leetcode.com/problems/spiral-matrix-ii/
Medium - https://leetcode.com/problems/spiral-matrix-iii/
MediumRecommended - https://leetcode.com/problems/spiral-matrix/
Medium - https://leetcode.com/problems/transpose-matrix/
Easy - https://leetcode.com/problems/two-sum-ii-input-array-is-sorted/
Easy - https://leetcode.com/problems/two-sum/
Easy - https://leetcode.com/problems/valid-mountain-array/
Easy
Dynamic Programming
- https://leetcode.com/problems/best-time-to-buy-and-sell-stock/
Easy - https://leetcode.com/problems/climbing-stairs/
Easy - https://leetcode.com/problems/divisor-game/
Easy - https://leetcode.com/problems/min-cost-climbing-stairs/
Easy - https://leetcode.com/problems/longest-increasing-subsequence/
Medium - https://leetcode.com/problems/number-of-smooth-descent-periods-of-a-stock/
Medium
Greedy
- https://leetcode.com/problems/can-place-flowers/
Easy - https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons/
Medium - https://leetcode.com/problems/non-overlapping-intervals/
Medium - https://leetcode.com/problems/merge-intervals/
Medium - https://leetcode.com/problems/remove-covered-intervals/
Medium - https://leetcode.com/problems/teemo-attacking/
Easy - https://leetcode.com/problems/gas-station/
Easy
LinkedLists
- https://leetcode.com/problems/maximum-twin-sum-of-a-linked-list/
Medium - https://leetcode.com/problems/merge-k-sorted-lists/
Hard - https://leetcode.com/problems/merge-nodes-in-between-zeros/
Medium - https://leetcode.com/problems/remove-duplicates-from-sorted-list/
Medium - https://leetcode.com/problems/swap-nodes-in-pairs/
Medium
Maths
- https://leetcode.com/problems/add-digits/
Easy - https://leetcode.com/problems/find-numbers-with-even-number-of-digits/
Easy - https://leetcode.com/problems/smallest-integer-divisible-by-k/
Medium - https://leetcode.com/problems/minimum-moves-to-reach-target-score/
MediumGreedy - https://leetcode.com/problems/minimum-sum-of-four-digit-number-after-splitting-digits/
Easy - https://leetcode.com/problems/find-three-consecutive-integers-that-sum-to-a-given-number/
Medium - https://leetcode.com/problems/count-integers-with-even-digit-sum/
Easy
Queue
- https://leetcode.com/problems/implement-queue-using-stacks/
Easy - https://leetcode.com/problems/time-needed-to-buy-tickets/
Easy - https://www.codingninjas.com/reverse-first-k-elements-of-queue
Easy - https://leetcode.com/problems/design-circular-queue/
Medium - https://leetcode.com/problems/find-the-winner-of-the-circular-game/
Medium - https://leetcode.com/problems/design-front-middle-back-queue/
Medium - https://leetcode.com/problems/product-of-the-last-k-numbers/
Medium
Recursion
Search
- https://leetcode.com/problems/arranging-coins/
Easy - https://leetcode.com/problems/binary-search/
Very Easy - https://leetcode.com/problems/check-if-n-and-its-double-exist/
Easy - https://leetcode.com/problems/count-negative-numbers-in-a-sorted-matrix/
Easy - https://leetcode.com/problems/fair-candy-swap/
Easy - https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/
Easy - https://leetcode.com/problems/find-in-mountain-array/
Hard - https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/
Medium - https://leetcode.com/problems/find-peak-element/
Easy - https://leetcode.com/problems/find-peak-element/
Medium - https://leetcode.com/problems/find-peak-element/
Medium - https://leetcode.com/problems/find-right-interval/
Medium - https://leetcode.com/problems/find-smallest-letter-greater-than-target/
Easy - https://leetcode.com/problems/first-bad-version/
Very Easy - https://leetcode.com/problems/guess-number-higher-or-lower/
Very Easy - https://leetcode.com/problems/intersection-of-two-arrays-ii/
Easy - https://leetcode.com/problems/intersection-of-two-arrays/
Easy - https://leetcode.com/problems/koko-eating-bananas/
Medium - https://leetcode.com/problems/kth-missing-positive-number/
Easy - https://leetcode.com/problems/peak-index-in-a-mountain-array/
Easy - https://leetcode.com/problems/reach-a-number/
Medium - https://leetcode.com/problems/richest-customer-wealth/
Very Easy - https://leetcode.com/problems/search-a-2d-matrix-ii/
Medium - https://leetcode.com/problems/search-a-2d-matrix/
Medium - https://leetcode.com/problems/search-in-rotated-sorted-array-ii/
Medium - https://leetcode.com/problems/search-in-rotated-sorted-array/
Medium - https://leetcode.com/problems/search-insert-position/
Easy - https://leetcode.com/problems/single-element-in-a-sorted-array/
Medium - https://leetcode.com/problems/special-array-with-x-elements-greater-than-or-equal-x/
Easy - https://leetcode.com/problems/sqrtx/
Very Easy - https://leetcode.com/problems/valid-perfect-square/
Very Easy - https://www.geeksforgeeks.org/find-rotation-count-rotated-sorted-array/
Easy
Sorting
-
BubbleSort
-
CycleSort
- https://leetcode.com/problems/missing-number/
Easy - https://leetcode.com/problems/set-mismatch/
Easy - https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array/
Easy - https://leetcode.com/problems/find-the-duplicate-number/
Medium - https://leetcode.com/problems/find-all-duplicates-in-an-array/
Medium
- https://leetcode.com/problems/missing-number/
-
InsertionSort
-
SelectionSort
Stack
- https://leetcode.com/problems/min-stack/
Easy - https://leetcode.com/problems/backspace-string-compare/
Easy - https://leetcode.com/problems/implement-stack-using-queues/
Easy - https://leetcode.com/problems/valid-parentheses/
Easy - https://leetcode.com/problems/next-greater-element-i/
Easy - https://www.interviewbit.com/problems/nearest-smaller-element/#
Easy - https://practice.geeksforgeeks.org/problems/sort-a-stack/1
Easy - https://leetcode.com/problems/largest-rectangle-in-histogram/
HardRecommended - https://leetcode.com/problems/minimum-add-to-make-parentheses-valid/
Medium - https://leetcode.com/problems/maximal-rectangle/
Hard - https://leetcode.com/problems/remove-k-digits/
MediumRecommended
Strings
- https://leetcode.com/problems/adding-spaces-to-a-string/
Medium - https://leetcode.com/problems/capitalize-the-title/
Easy - https://leetcode.com/problems/check-if-all-as-appears-before-all-bs/
Easy - https://leetcode.com/problems/compare-version-numbers/
Medium - https://leetcode.com/problems/counting-words-with-a-given-prefix/
Easy - https://leetcode.com/problems/detect-capital/
Easy - https://leetcode.com/problems/divide-a-string-into-groups-of-size-k/
Easy - https://leetcode.com/problems/excel-sheet-column-number/
Easy - https://leetcode.com/problems/find-all-anagrams-in-a-string/
Medium - https://leetcode.com/problems/find-first-palindromic-string-in-the-array/
Easy - https://leetcode.com/problems/find-substring-with-given-hash-value/
MediumRecommended - https://leetcode.com/problems/find-the-difference/
Easy - https://leetcode.com/problems/longest-palindrome-by-concatenating-two-letter-words/
Medium - https://leetcode.com/problems/minimum-number-of-steps-to-make-two-strings-anagram-ii/
Easy - https://leetcode.com/problems/permutation-in-string/
Medium - https://leetcode.com/problems/robot-bounded-in-circle/
MediumRecommended - https://leetcode.com/problems/string-to-integer-atoi/
MediumRecommended - https://leetcode.com/problems/word-pattern/
Easy
Trees
- https://leetcode.com/problems/insert-into-a-binary-search-tree/
Medium - https://leetcode.com/problems/all-elements-in-two-binary-search-trees/
Medium - https://leetcode.com/problems/convert-bst-to-greater-tree/
Medium - https://leetcode.com/problems/recover-binary-search-tree/
Medium - https://leetcode.com/problems/kth-smallest-element-in-a-bst/
Medium
Concepts / Miscelleneous
-
recursion
- Print Number from 1 to N && from N to 1 && from 1 to N and N to 1 in same
- Sum and Product
Factorialof Number from 1 To N - Sum and Product of Digits in a Number
- Reverse A Number
- Maximize The Number By Swapping Adjacent Two Digits
Not Yet Solved
-
dynamic Programming
- Print possible Sum for Target using given number as many times possible
-
binarySearch
- Order Agnostic Binary Search
Binary Search - Search in Infinite Array
Binary Search - Find Binary Search Ceiling Value
Binary Search - Find Binary Search Floor Value
Binary Search - Find Pivot in Rotated Sorted Array
Binary Search - Find Pivot in Rotated Sorted Element with Duplicates
Binary Search - Rotation Count for Rotated Array
Binary Search - Search in Sorted Row and Column Wise Matrix
Binary Search - Search a Matrix sorted Row and Column wise
Binary Search , Matrix - Search a Sorted Matrix
Binary Search , Matrix
- Order Agnostic Binary Search
-
overflow & underflow
- String to Integer - Handling Integer Overflow and Underflow
Wanna Contribute to this repository !!
Thank You !!