LeetCode Problems

Number	Name of Problem	Leetcode Link	Video Link	Code
55	Jump Game	https://leetcode.com/problems/jump-game/	https://youtu.be/C6AZyfj-Kyw	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/55.%20Jump%20Game
118	Pascal's Triangle	https://leetcode.com/problems/pascals-triangle/description/	https://youtu.be/eeleEMOlRpA	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/118.%20Pascal's%20Triangle
121	Best Time to Buy and Sell Stock	https://leetcode.com/problems/best-time-to-buy-and-sell-stock/	https://youtu.be/5skEWekmJ2w	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/121.%20Best%20Time%20to%20Buy%20and%20Sell%20Stock
134	Gas Station	https://leetcode.com/problems/gas-station/	https://youtu.be/3wUa7Lf1Xjk	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/134.%20Gas%20Station
198	House Robber	https://leetcode.com/problems/house-robber/	https://youtu.be/YEEQRP2ZFxk	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/198.%20House%20Robber
206	Reverse Linked List	https://leetcode.com/problems/reverse-linked-list/description/	https://youtu.be/rzXJe1xMHLc	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/206.%20Reverse%20Linked%20List
213	House Robber II	https://leetcode.com/problems/house-robber-ii/	https://youtu.be/5bxF0MJ1oM0	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/213.%20House%20Robber%20II
300	Longest Increasing Subsequence	https://leetcode.com/problems/longest-increasing-subsequence/description/	https://youtu.be/iyd-8fpqEgU	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/300.%20Longest%20Increasing%20Subsequence
337	House Robber III	https://leetcode.com/problems/house-robber-iii/	https://youtu.be/FRP5l83XoZo	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/337.%20House%20Robber%20III
403	Frog jump	https://leetcode.com/problems/frog-jump/	https://youtu.be/3FYCPlIx3YA	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/403.%20Frog%20Jump
530	Minimum Absolute Difference in BST	https://leetcode.com/problems/minimum-absolute-difference-in-bst/description/	https://youtu.be/uDykjVZ5s4o	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/530.%20Minimum%20Absolute%20Difference%20in%20BST
724	Find Pivot Index	https://leetcode.com/problems/find-pivot-index/description/	https://youtu.be/HSg9QONpcPw	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/724.%20Find%20Pivot%20Index
862	Shortest Subarray with Sum at Least K	https://leetcode.com/problems/shortest-subarray-with-sum-at-least-k/description/	https://youtu.be/eWbH_j6Lgnk	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/862.%20Shortest%20Subarray%20with%20Sum%20at%20Least%20K
1071	Greatest Common Divisor of Strings	https://leetcode.com/problems/greatest-common-divisor-of-strings/description/	https://youtu.be/41iKYE0n0PQ	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1071.%20Greatest%20Common%20Divisor%20of%20Strings
1129	Shortest Path with Alternating Colors	https://leetcode.com/problems/shortest-path-with-alternating-colors/description/	https://youtu.be/8FcdSwqR3Js	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1129.%20Shortest%20Path%20with%20Alternating%20Colors
1340	Jump Game V	https://leetcode.com/problems/jump-game-v/	https://youtu.be/pQXbujZLTv0	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1340.%20Jump%20Game%20V
1353	Maximum Number of Events That Can Be Attended	https://leetcode.com/problems/maximum-number-of-events-that-can-be-attended/	https://youtu.be/dTVB1W7-BvY	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1353.%20Maximum%20Number%20of%20Events%20That%20Can%20Be%20Attended
1365	How Many Numbers Are Smaller Than the Current Number	https://leetcode.com/problems/how-many-numbers-are-smaller-than-the-current-number/description/	https://youtu.be/CKSdHsQyPYk	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1365.%20How%20Many%20Numbers%20Are%20Smaller%20Than%20the%20Current%20Number
1498	Number of Subsequences That Satisfy the Given Sum Condition	https://leetcode.com/problems/number-of-subsequences-that-satisfy-the-given-sum-condition/description/	https://youtu.be/CNwBICbW-M8	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1498.%20Number%20of%20Subsequences%20That%20Satisfy%20the%20Given%20Sum%20Condition
1510	Stone Game IV	https://leetcode.com/problems/stone-game-iv/	https://youtu.be/Gcg_a3r8FA0	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1510.%20Stone%20Game%20IV
1523	Count Odd Numbers in an Interval Range	https://leetcode.com/problems/count-odd-numbers-in-an-interval-range/description/	https://youtu.be/HxI78QECe0c	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1523.%20Count%20Odd%20Numbers%20in%20an%20Interval%20Range
1696	Jump Game VI	https://leetcode.com/problems/jump-game-vi/	https://youtu.be/LiEcBMK5PQs	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1696.%20Jump%20Game%20VI
1751	Maximum Number of Events That Can Be Attended II	https://leetcode.com/problems/maximum-number-of-events-that-can-be-attended-ii/description/	https://youtu.be/C3r4OTOmfaI	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1751.%20Maximum%20Number%20of%20Events%20That%20Can%20Be%20Attended%20II
1834	Single-Threaded CPU	https://leetcode.com/problems/single-threaded-cpu/	https://youtu.be/6104EJTG_T4	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1834.%20Single-Threaded%20CPU
1871	Jump Game VII	https://leetcode.com/problems/jump-game-vii/	https://youtu.be/bZxWLuiqHes	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1871.%20Jump%20Game%20VII
2328	Number of Increasing Paths in a Grid	https://leetcode.com/problems/number-of-increasing-paths-in-a-grid/description/	https://youtu.be/kPAv1t2uBjg	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/2328.%20Number%20of%20Increasing%20Paths%20in%20a%20Grid
2375	Construct Smallest Number From DI String	https://leetcode.com/problems/construct-smallest-number-from-di-string/	https://youtu.be/GEqSg0Otq4Y	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/2375.%20Construct%20Smallest%20Number%20From%20DI%20String
2531	Make Number of Distinct Characters Equal	https://leetcode.com/problems/make-number-of-distinct-characters-equal/description/	https://youtu.be/GwWmlpIEIwc	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/2531.%20Make%20Number%20of%20Distinct%20Characters%20Equal
2598	Length Of Longest Subarray with at most K Frequency	https://leetcode.com/problems/length-of-longest-subarray-with-at-most-k-frequency/	https://youtu.be/GwWmlpIEIwc	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/2598.%20Length%20Of%20Longest%20Subarray%20with%20at%20most%20K%20Frequency
2657	Find the Prefix Common Array of Two Arrays	https://leetcode.com/problems/find-the-prefix-common-array-of-two-arrays/description/	https://youtu.be/m6s9dBCBocQ	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/2657.%20Find%20the%20Prefix%20Common%20Array%20of%20Two%20Arrays

Leetcode-Challenge

July Leetcoding Challenge 2021

Day	Name of Problem	Leetcode Link	Video Link	Code
18	Reverse Nodes in k-Group	https://leetcode.com/problems/reverse-nodes-in-k-group/	https://youtu.be/FYsYAELWyRs	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/25.%20Reverse%20Nodes%20in%20k-Group
26	Non-negative Integers without Consecutive Ones	https://leetcode.com/problems/non-negative-integers-without-consecutive-ones/	https://youtu.be/Pdeje3QH8G8	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/600.%20Non-negative%20Integers%20without%20Consecutive%20Ones

June Leetcoding Challenge 2021

Day	Name of Problem	Leetcode Link	Video Link	Code
12	Minimum Number of Refueling Stops	https://leetcode.com/problems/minimum-number-of-refueling-stops/	https://youtu.be/4RgqAQFr9WQ	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/871.%20Minimum%20Number%20of%20Refueling%20Stops

May Leetcoding Challenge 2021

Day	Name of Problem	Leetcode Link	Video Link	Code
1	Prefix and Suffix Search	https://leetcode.com/problems/prefix-and-suffix-search/	https://youtu.be/U7fIQ7qAeuE	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/745.%20Prefix%20and%20Suffix%20Search
2	Course Schedule III	https://leetcode.com/problems/course-schedule-iii/	https://youtu.be/ey8FxYsFAMU	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/630.%20Course%20Schedule%20III
3	Running Sum of 1d Array	https://leetcode.com/problems/running-sum-of-1d-array/	https://youtu.be/3uMmKCZ_9Go	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1480.%20Running%20Sum%20of%201d%20Array
4	Non-decreasing Array	https://leetcode.com/problems/non-decreasing-array/	https://youtu.be/iL7oSNc3OXA	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/665.%20Non-decreasing%20Array
5	Jump Game II	https://leetcode.com/problems/jump-game-ii/	https://youtu.be/BRnRPLNGWIo	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/45.%20Jump%20Game%20II
6	Convert Sorted List to BST	https://leetcode.com/problems/convert-sorted-list-to-binary-search-tree/	https://youtu.be/5IQF13nNq6A	https://github.com/Algorithms-Made-Easy/Tree/blob/master/Convert-Sorted-List-to-Binary-Search-Tree
7	Delete Operation for Two Strings	https://leetcode.com/problems/delete-operation-for-two-strings/	https://youtu.be/VSrsUkoG0bk	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/583.%20Delete%20Operation%20for%20Two%20Strings
8	Super Palindromes	https://leetcode.com/problems/super-palindromes/	https://youtu.be/iZ_wJbrlJz0	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/906.%20Super%20Palindromes
9	Construct Target Array With Multiple Sums	https://leetcode.com/problems/construct-target-array-with-multiple-sums/	https://youtu.be/h9t7JF50Mpw	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1354.%20Construct%20Target%20Array%20With%20Multiple%20Sums
10	Count Primes	https://leetcode.com/problems/count-primes/	https://youtu.be/5LMkddl2NCk	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/204.%20Count%20Primes
11	Maximum Points You Can Obtain from Cards	https://leetcode.com/problems/maximum-points-you-can-obtain-from-cards/	https://youtu.be/U0utLw_vWGM	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1423.%20Maximum%20Points%20You%20Can%20Obtain%20from%20Cards
12	Range Sum Query 2D - Immutable	https://leetcode.com/problems/range-sum-query-2d-immutable/	https://youtu.be/rkLDDxOcJxU	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/304.%20Range%20Sum%20Query%202D%20-%20Immutable
13	Ambiguous Coordinates	https://leetcode.com/problems/ambiguous-coordinates/	https://youtu.be/rt-lJS5nlOQ	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/816.%20Ambiguous%20Coordinates
14	Flatten Binary Tree to Linked List	https://leetcode.com/problems/flatten-binary-tree-to-linked-list/	https://youtu.be/NOKVBiJwkD0	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/114.%20Flatten%20Binary%20Tree%20to%20Linked%20List
15	Valid Number	https://leetcode.com/problems/valid-number/	https://youtu.be/0qac3ngAZmE	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/65.%20Valid%20Number
16	Binary Tree Cameras	https://leetcode.com/problems/binary-tree-cameras/	https://youtu.be/2Gh5WPjAgJk	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/968.%20Binary%20Tree%20Cameras
17	Longest String Chain	https://leetcode.com/problems/longest-string-chain/	https://youtu.be/pXG3uE_KqZM	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1048.%20Longest%20String%20Chain
18	Find Duplicate File in System	https://leetcode.com/problems/find-duplicate-file-in-system/	https://youtu.be/4KGl6PMwVXE	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/609.%20Find%20Duplicate%20File%20in%20System
19	Minimum Moves to Equal Array Elements II	https://leetcode.com/problems/minimum-moves-to-equal-array-elements-ii/	https://youtu.be/FGgL5QxZLno	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/462.%20Minimum%20Moves%20to%20Equal%20Array%20Elements%20II
20	Binary Tree Level Order Traversal	https://leetcode.com/problems/binary-tree-level-order-traversal/	https://youtu.be/vQrggrFMyp8	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/102.%20Binary%20Tree%20Level%20Order%20Traversal
21	Find and Replace Pattern	https://leetcode.com/problems/find-and-replace-pattern/	https://youtu.be/JbiV9l5AHQE	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/890.%20Find%20and%20Replace%20Pattern
22	N-Queens	https://leetcode.com/problems/n-queens/	https://youtu.be/jJMWhGKq3SM	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/51.%20N-Queens

April Leetcoding Challenge 2021

Day	Name of Problem	Leetcode Link	Video Link	Code
1	Palindrome Linked List	https://leetcode.com/problems/palindrome-linked-list/	https://youtu.be/Ll9ZbXaXqlQ	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/234.%20Palindrome%20Linked%20List
2	Ones and Zeroes	https://leetcode.com/problems/ones-and-zeroes/	https://youtu.be/qkUZ87NCYSw	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/474.%20Ones%20and%20Zeroes
3	Longest Valid Parentheses	https://leetcode.com/problems/longest-valid-parentheses/	https://youtu.be/VdQuwtEd10M	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/32.%20Longest%20Valid%20Parentheses
4	Design Circular Queue	https://leetcode.com/problems/design-circular-queue/	https://youtu.be/Q2YhZ6Pq0GQ	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/622.%20Design%20Circular%20Queue
5	Global and Local Inversions	https://leetcode.com/problems/global-and-local-inversions/	https://youtu.be/1QlP6cVLrII	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/775.%20Global%20and%20Local%20Inversions
6	Minimum Operations to Make Array Equal	https://leetcode.com/problems/minimum-operations-to-make-array-equal/	https://youtu.be/9aGx9hoIBjI	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1551.%20Minimum%20Operations%20to%20Make%20Array%20Equal
7	Determine if String Halves Are Alike	https://leetcode.com/problems/determine-if-string-halves-are-alike/	https://youtu.be/752uISt9sCs	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1704.%20Determine%20if%20String%20Halves%20Are%20Alike
8	Letter Combinations of a Phone Number	https://leetcode.com/problems/letter-combinations-of-a-phone-number/	https://youtu.be/Ydur1aYALc4	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/17.%20Letter%20Combinations%20of%20a%20Phone%20Number
9	Verifying an Alien Dictionary	https://leetcode.com/problems/verifying-an-alien-dictionary/	https://youtu.be/jK5a8T9q4pc	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/953.%20Verifying%20an%20Alien%20Dictionary
10	Deepest Leaves Sum	https://leetcode.com/problems/deepest-leaves-sum/	https://youtu.be/kgG2LuxzAHU	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1302.%20Deepest%20Leaves%20Sum
11	Longest Increasing Path in a Matrix	https://leetcode.com/problems/longest-increasing-path-in-a-matrix/	https://youtu.be/WiEqhI7v2FY	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/329.%20Longest%20Increasing%20Path%20in%20a%20Matrix
12	Beautiful Arrangement II	https://leetcode.com/problems/beautiful-arrangement-ii/	https://youtu.be/BiQlqgmJ0BM	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/667.%20Beautiful%20Arrangement%20II
13	Flatten Nested List Iterator	https://leetcode.com/problems/flatten-nested-list-iterator/	https://youtu.be/V-gPWPOyq8I	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/341.%20Flatten%20Nested%20List%20Iterator
14	Partition List	https://leetcode.com/problems/partition-list/	https://youtu.be/b4FeEwAGDtU	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/86.%20Partition%20List
15	Fibonacci Number	https://leetcode.com/problems/fibonacci-number/	https://youtu.be/kIzjdvU_QIU	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/509.%20Fibonacci%20Number
16	Remove All Adjacent Duplicates in String II	https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii/	https://youtu.be/RJpy4A7LJrs	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1209.%20Remove%20All%20Adjacent%20Duplicates%20in%20String%20II
17	Number of Submatrices That Sum to Target	https://leetcode.com/problems/number-of-submatrices-that-sum-to-target/	https://youtu.be/elADMOC_hDI	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1074.%20Number%20of%20Submatrices%20That%20Sum%20to%20Target
18	Remove Nth Node From End of List	https://leetcode.com/problems/remove-nth-node-from-end-of-list/	https://youtu.be/Kncuqqg_I18	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/19.%20Remove%20Nth%20Node%20From%20End%20of%20List
19	Combination Sum IV	https://leetcode.com/problems/combination-sum-iv/	https://youtu.be/GWqe_xfqxCA	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/377.%20Combination%20Sum%20IV
20	N-ary Tree Preorder Traversal	https://leetcode.com/problems/n-ary-tree-preorder-traversal/	https://youtu.be/DAIN1ZzvFeA	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/589.%20N-ary%20Tree%20Preorder%20Traversal
21	Triangle	https://leetcode.com/problems/triangle/	https://youtu.be/O2eaAdBpZBQ	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/120.%20Triangle
22	Brick Wall	https://leetcode.com/problems/brick-wall/	https://youtu.be/s4pN9Qfj8EY	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/554.%20Brick%20Wall
23	Count Binary Substrings	https://leetcode.com/problems/count-binary-substrings/	https://youtu.be/MGPHPadxhtQ	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/696.%20Count%20Binary%20Substrings
24	Critical Connections in a Network	https://leetcode.com/problems/critical-connections-in-a-network/	https://youtu.be/5xUdS0hclQ4	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1192.%20Critical%20Connections%20in%20a%20Network
25	Rotate Image	https://leetcode.com/problems/rotate-image/	https://youtu.be/bW_9pjcXP_4	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/48.%20Rotate%20Image
26	Furthest Building You Can Reach	https://leetcode.com/problems/furthest-building-you-can-reach/	https://youtu.be/wAxhnUhXvHE	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/1642.%20Furthest%20Building%20You%20Can%20Reach
27	Power of Three	https://leetcode.com/problems/power-of-three/	https://youtu.be/GNb8vSyw-WE	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/326.%20Power%20of%20Three
28	Unique Paths II	https://leetcode.com/problems/unique-paths-ii/	https://youtu.be/nZSXWXzn1aM	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/63.%20Unique%20Paths%20II
29	Find First and Last Position of Element in Sorted Array	https://leetcode.com/problems/find-first-and-last-position-of-element-in-sorted-array/	https://youtu.be/c_HH9sakxpY	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/34.%20Find%20First%20and%20Last%20Position%20of%20Element%20in%20Sorted%20Array
30	Powerful Integers	https://leetcode.com/problems/powerful-integers/	https://youtu.be/dkvMSZ1tRXo	https://github.com/Algorithms-Made-Easy/Leetcode-Challenge/blob/main/970.%20Powerful%20Integers