version 2021

Author: cs-MohamedAyman

level-2/leetcode-phase-2-1/README.md

@@ -12,7 +12,7 @@
 - ***Queue and Dequeue*** 	`40 problems`
 
 
-## LeetCode - Array I `40 problems`
+### LeetCode - Array I `40 problems`
 
 - [running sum of 1d array](https://leetcode.com/problems/running-sum-of-1d-array/)
 - [kids with the greatest number of candies](https://leetcode.com/problems/kids-with-the-greatest-number-of-candies/)
@@ -55,7 +55,7 @@
 - [relative sort array](https://leetcode.com/problems/relative-sort-array/)
 - [fibonacci number](https://leetcode.com/problems/fibonacci-number/)
 
-## LeetCode - Array II `40 problems`
+### LeetCode - Array II `40 problems`
 
 - [available captures for rook](https://leetcode.com/problems/available-captures-for-rook/)
 - [number of students unable to eat lunch](https://leetcode.com/problems/number-of-students-unable-to-eat-lunch/)
@@ -98,7 +98,7 @@
 - [rank transform of an array](https://leetcode.com/problems/rank-transform-of-an-array/)
 - [check if a number is majority element in a sorted array](https://leetcode.com/problems/check-if-a-number-is-majority-element-in-a-sorted-array/)
 
-## LeetCode - Array III `40 problems`
+### LeetCode - Array III `40 problems`
 
 - [most visited sector in a circular track](https://leetcode.com/problems/most-visited-sector-in-a-circular-track/)
 - [find all numbers disappeared in an array](https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array/)
@@ -144,7 +144,7 @@
 - [third maximum number](https://leetcode.com/problems/third-maximum-number/)
 - [missing ranges](https://leetcode.com/problems/missing-ranges/)
 
-## LeetCode - Linked List `10 problems`
+### LeetCode - Linked List `10 problems`
 
 - [convert binary number in a linked list to integer](https://leetcode.com/problems/convert-binary-number-in-a-linked-list-to-integer/)
 - [delete n nodes after m nodes of a linked list](https://leetcode.com/problems/delete-n-nodes-after-m-nodes-of-a-linked-list/)
@@ -158,7 +158,7 @@
 - [palindrome linked list](https://leetcode.com/problems/palindrome-linked-list/)
 - [remove linked list elements](https://leetcode.com/problems/remove-linked-list-elements/)
 
-## LeetCode - Stack `50 problems`
+### LeetCode - Stack `50 problems`
 
 - [remove outermost parentheses](https://leetcode.com/problems/remove-outermost-parentheses/)
 - [remove all adjacent duplicates in string](https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string/)
@@ -209,7 +209,7 @@
 - [remove k digits](https://leetcode.com/problems/remove-k-digits/)
 - [decoded string at index](https://leetcode.com/problems/decoded-string-at-index/)
 
-## LeetCode - Queue and Dequeue `40 problems`
+### LeetCode - Queue and Dequeue `40 problems`
 
 - [moving average from data stream](https://leetcode.com/problems/moving-average-from-data-stream/)
 - [number of recent calls](https://leetcode.com/problems/number-of-recent-calls/)

level-2/leetcode-phase-2-2/README.md

@@ -10,7 +10,7 @@
 - ***Linked List*** `30 problems`
 - ***Stack*** 		`10 problems`
 
-## LeetCode - Array I `50 problems`
+### LeetCode - Array I `50 problems`
 
 - [subrectangle queries](https://leetcode.com/problems/subrectangle-queries/)
 - [minimum number of operations to move all balls to each box](https://leetcode.com/problems/minimum-number-of-operations-to-move-all-balls-to-each-box/)
@@ -64,7 +64,7 @@
 - [shortest word distance iii](https://leetcode.com/problems/shortest-word-distance-iii/)
 - [max chunks to make sorted](https://leetcode.com/problems/max-chunks-to-make-sorted/)
 
-## LeetCode - Array II `50 problems`
+### LeetCode - Array II `50 problems`
 
 - [rle iterator](https://leetcode.com/problems/rle-iterator/)
 - [least number of unique integers after k removals](https://leetcode.com/problems/least-number-of-unique-integers-after-k-removals/)
@@ -118,7 +118,7 @@
 - [set matrix zeroes](https://leetcode.com/problems/set-matrix-zeroes/)
 - [maximize distance to closest person](https://leetcode.com/problems/maximize-distance-to-closest-person/)
 
-## LeetCode - Array III `50 problems`
+### LeetCode - Array III `50 problems`
 
 - [friends of appropriate ages](https://leetcode.com/problems/friends-of-appropriate-ages/)
 - [find the celebrity](https://leetcode.com/problems/find-the-celebrity/)
@@ -172,7 +172,7 @@
 - [median of two sorted arrays](https://leetcode.com/problems/median-of-two-sorted-arrays/)
 - [word ladder ii](https://leetcode.com/problems/word-ladder-ii/)
 
-## LeetCode - Linked List `30 problems`
+### LeetCode - Linked List `30 problems`
 
 - [merge in between linked lists](https://leetcode.com/problems/merge-in-between-linked-lists/)
 - [remove duplicates from an unsorted linked list](https://leetcode.com/problems/remove-duplicates-from-an-unsorted-linked-list/)
@@ -206,7 +206,7 @@
 - [design linked list](https://leetcode.com/problems/design-linked-list/)
 - [reverse nodes in k group](https://leetcode.com/problems/reverse-nodes-in-k-group/)
 
-## LeetCode - Stack `10 problems`
+### LeetCode - Stack `10 problems`
 
 - [number of valid subarrays](https://leetcode.com/problems/number-of-valid-subarrays/)
 - [maximum frequency stack](https://leetcode.com/problems/maximum-frequency-stack/)

level-2/leetcode-phase-2-3/README.md

@@ -11,7 +11,7 @@
 - ***Hash Table II*** 	`40 problems`
 - ***Hash Table III*** 	`40 problems`
 
-## LeetCode - Recursion `30 problems`
+### LeetCode - Recursion `30 problems`
 
 - [sum of all subset xor totals](https://leetcode.com/problems/sum-of-all-subset-xor-totals/)
 - [range sum of bst](https://leetcode.com/problems/range-sum-of-bst/)
@@ -48,7 +48,7 @@
 - [strobogrammatic number iii](https://leetcode.com/problems/strobogrammatic-number-iii/)
 - [binary tree maximum path sum](https://leetcode.com/problems/binary-tree-maximum-path-sum/)
 
-## LeetCode - Binary Tree `30 problems`
+### LeetCode - Binary Tree `30 problems`
 
 - [find all the lonely nodes](https://leetcode.com/problems/find-all-the-lonely-nodes/)
 - [merge two binary trees](https://leetcode.com/problems/merge-two-binary-trees/)
@@ -84,7 +84,7 @@
 - [balance a binary search tree](https://leetcode.com/problems/balance-a-binary-search-tree/)
 - [maximum sum bst in binary tree](https://leetcode.com/problems/maximum-sum-bst-in-binary-tree/)
 
-## LeetCode - Heap Tree `30 problems`
+### LeetCode - Heap Tree `30 problems`
 
 - [last stone weight](https://leetcode.com/problems/last-stone-weight/)
 - [kth largest element in a stream](https://leetcode.com/problems/kth-largest-element-in-a-stream/)
@@ -114,7 +114,7 @@
 - [find k pairs with smallest sums](https://leetcode.com/problems/find-k-pairs-with-smallest-sums/)
 - [design twitter](https://leetcode.com/problems/design-twitter/)
 
-## LeetCode - Hash Table I `40 problems`
+### LeetCode - Hash Table I `40 problems`
 
 - [number of good pairs](https://leetcode.com/problems/number-of-good-pairs/)
 - [jewels and stones](https://leetcode.com/problems/jewels-and-stones/)
@@ -157,7 +157,7 @@
 - [longest harmonious subsequence](https://leetcode.com/problems/longest-harmonious-subsequence/)
 - [longest word in dictionary](https://leetcode.com/problems/longest-word-in-dictionary/)
 
-## LeetCode - Hash Table II `40 problems`
+### LeetCode - Hash Table II `40 problems`
 
 - [two sum](https://leetcode.com/problems/two-sum/)
 - [strobogrammatic number](https://leetcode.com/problems/strobogrammatic-number/)
@@ -200,7 +200,7 @@
 - [max number of k sum pairs](https://leetcode.com/problems/max-number-of-k-sum-pairs/)
 - [number of boomerangs](https://leetcode.com/problems/number-of-boomerangs/)
 
-## LeetCode - Hash Table III `40 problems`
+### LeetCode - Hash Table III `40 problems`
 
 - [minimum area rectangle](https://leetcode.com/problems/minimum-area-rectangle/)
 - [vowel spellchecker](https://leetcode.com/problems/vowel-spellchecker/)

level-2/leetcode-phase-2-4/README.md

@@ -10,7 +10,7 @@
 - ***Heap Tree*** 		`30 problems`
 - ***Hash Table*** 		`10 problems`
 
-## LeetCode - Binary Tree I `30 problems`
+### LeetCode - Binary Tree I `30 problems`
 
 - [deepest leaves sum](https://leetcode.com/problems/deepest-leaves-sum/)
 - [sum of nodes with even valued grandparent](https://leetcode.com/problems/sum-of-nodes-with-even-valued-grandparent/)
@@ -46,7 +46,7 @@
 - [flip equivalent binary trees](https://leetcode.com/problems/flip-equivalent-binary-trees/)
 - [maximum binary tree ii](https://leetcode.com/problems/maximum-binary-tree-ii/)
 
-## LeetCode - Binary Tree II `30 problems`
+### LeetCode - Binary Tree II `30 problems`
 
 - [maximum average subtree](https://leetcode.com/problems/maximum-average-subtree/)
 - [kth smallest element in a bst](https://leetcode.com/problems/kth-smallest-element-in-a-bst/)
@@ -86,7 +86,7 @@
 - [construct binary tree from inorder and postorder traversal](https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal/)
 - [populating next right pointers in each node](https://leetcode.com/problems/populating-next-right-pointers-in-each-node/)
 
-## LeetCode - Binary Tree III `30 problems`
+### LeetCode - Binary Tree III `30 problems`
 
 - [count complete tree nodes](https://leetcode.com/problems/count-complete-tree-nodes/)
 - [path sum ii](https://leetcode.com/problems/path-sum-ii/)
@@ -121,7 +121,7 @@
 - [tree of coprimes](https://leetcode.com/problems/tree-of-coprimes/)
 - [redundant connection ii](https://leetcode.com/problems/redundant-connection-ii/)
 
-## LeetCode - Heap Tree `30 problems`
+### LeetCode - Heap Tree `30 problems`
 
 - [employee free time](https://leetcode.com/problems/employee-free-time/)
 - [find the kth smallest sum of a matrix with sorted rows](https://leetcode.com/problems/find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows/)
@@ -156,7 +156,7 @@
 - [longest chunked palindrome decomposition](https://leetcode.com/problems/longest-chunked-palindrome-decomposition/)
 - [distinct echo substrings](https://leetcode.com/problems/distinct-echo-substrings/)
 
-## LeetCode - Hash Table `10 problems`
+### LeetCode - Hash Table `10 problems`
 
 - [smallest range covering elements from k lists](https://leetcode.com/problems/smallest-range-covering-elements-from-k-lists/)
 - [number of distinct islands ii](https://leetcode.com/problems/number-of-distinct-islands-ii/)

level-3/codeforces-phase-3-educational-contests/README.md

@@ -4,10 +4,10 @@
 
 ### Table of Content
 
-- ***Educational Codeforces Rounds I*** `25 contests`
-- ***Educational Codeforces Rounds II*** `25 contests`
-- ***Educational Codeforces Rounds III*** `25 contests`
-- ***Educational Codeforces Rounds IV*** `25 contests`
+- ***Educational Codeforces Rounds I*** 	`25 contests`
+- ***Educational Codeforces Rounds II*** 	`25 contests`
+- ***Educational Codeforces Rounds III*** 	`25 contests`
+- ***Educational Codeforces Rounds IV*** 	`25 contests`
 
 ### Codeforces - Educational Rounds I `25 contests`
 

level-3/codeforces-phase-3-gym-contests/README.md

@@ -5,11 +5,11 @@
 ### Table of Content
 
 - ***Codeforces GYM Contests 2***     	`20 contests`
-- ***Codeforces GYM Contests 3 I*** 	  `25 contests`
-- ***Codeforces GYM Contests 3 II*** 	  `15 contests`
+- ***Codeforces GYM Contests 3 I*** 	`25 contests`
+- ***Codeforces GYM Contests 3 II*** 	`15 contests`
 - ***Codeforces GYM Contests 3 III*** 	`30 contests`
-- ***Codeforces GYM Contests 3 IV*** 	  `30 contests`
-- ***Codeforces GYM Contests 3 V*** 	  `30 contests`
+- ***Codeforces GYM Contests 3 IV*** 	`30 contests`
+- ***Codeforces GYM Contests 3 V*** 	`30 contests`
 
 ### Codeforces - GYM Contests 2 `20 contests`
 

level-3/leetcode-phase-3-1/README.md

@@ -11,7 +11,7 @@
 - ***Sort II*** 			`40 problems`
 - ***Greedy*** 				`20 problems`
 
-## LeetCode - Binary Search I `30 problems`
+### LeetCode - Binary Search I `30 problems`
 
 - [count negative numbers in a sorted matrix](https://leetcode.com/problems/count-negative-numbers-in-a-sorted-matrix/)
 - [the k weakest rows in a matrix](https://leetcode.com/problems/the-k-weakest-rows-in-a-matrix/)
@@ -49,7 +49,7 @@
 - [shortest distance to target color](https://leetcode.com/problems/shortest-distance-to-target-color/)
 - [minimum limit of balls in a bag](https://leetcode.com/problems/minimum-limit-of-balls-in-a-bag/)
 
-## LeetCode - Binary Search II `30 problems`
+### LeetCode - Binary Search II `30 problems`
 
 - [minimum number of days to make m bouquets](https://leetcode.com/problems/minimum-number-of-days-to-make-m-bouquets/)
 - [online election](https://leetcode.com/problems/online-election/)
@@ -86,7 +86,7 @@
 - [ugly number iii](https://leetcode.com/problems/ugly-number-iii/)
 - [divide two integers](https://leetcode.com/problems/divide-two-integers/)
 
-## LeetCode - Divide and Conquer `20 problems`
+### LeetCode - Divide and Conquer `20 problems`
 
 - [majority element](https://leetcode.com/problems/majority-element/)
 - [maximum subarray](https://leetcode.com/problems/maximum-subarray/)
@@ -110,7 +110,7 @@
 - [median of two sorted arrays](https://leetcode.com/problems/median-of-two-sorted-arrays/)
 - [reverse pairs](https://leetcode.com/problems/reverse-pairs/)
 
-## LeetCode - Sort I `40 problems`
+### LeetCode - Sort I `40 problems`
 
 - [shuffle string](https://leetcode.com/problems/shuffle-string/)
 - [sorting the sentence](https://leetcode.com/problems/sorting-the-sentence/)
@@ -153,7 +153,7 @@
 - [least number of unique integers after k removals](https://leetcode.com/problems/least-number-of-unique-integers-after-k-removals/)
 - [rank teams by votes](https://leetcode.com/problems/rank-teams-by-votes/)
 
-## LeetCode - Sort II `40 problems`
+### LeetCode - Sort II `40 problems`
 
 - [people whose list of favorite companies is not a subset of another list](https://leetcode.com/problems/people-whose-list-of-favorite-companies-is-not-a-subset-of-another-list/)
 - [minimum deletions to make character frequencies unique](https://leetcode.com/problems/minimum-deletions-to-make-character-frequencies-unique/)
@@ -194,7 +194,7 @@
 - [random pick with blacklist](https://leetcode.com/problems/random-pick-with-blacklist/)
 - [closest room](https://leetcode.com/problems/closest-room/)
 
-## LeetCode - Greedy `20 problems`
+### LeetCode - Greedy `20 problems`
 
 - [split a string in balanced strings](https://leetcode.com/problems/split-a-string-in-balanced-strings/)
 - [number of rectangles that can form the largest square](https://leetcode.com/problems/number-of-rectangles-that-can-form-the-largest-square/)

level-3/leetcode-phase-3-2/README.md

@@ -11,8 +11,7 @@
 - ***Graph I*** 		`30 problems`
 - ***Graph II*** 		`30 problems`
 
-
-## LeetCode - Binary Search `30 problems`
+### LeetCode - Binary Search `30 problems`
 
 - [swim in rising water](https://leetcode.com/problems/swim-in-rising-water/)
 - [divide chocolate](https://leetcode.com/problems/divide-chocolate/)
@@ -43,7 +42,7 @@
 - [super egg drop](https://leetcode.com/problems/super-egg-drop/)
 - [shortest subarray with sum at least k](https://leetcode.com/problems/shortest-subarray-with-sum-at-least-k/)
 
-## LeetCode - Greedy I `40 problems`
+### LeetCode - Greedy I `40 problems`
 
 - [minimize product sum of two arrays](https://leetcode.com/problems/minimize-product-sum-of-two-arrays/)
 - [partitioning into minimum number of deci binary numbers](https://leetcode.com/problems/partitioning-into-minimum-number-of-deci-binary-numbers/)
@@ -85,7 +84,7 @@
 - [4 keys keyboard](https://leetcode.com/problems/4-keys-keyboard/)
 - [maximum absolute sum of any subarray](https://leetcode.com/problems/maximum-absolute-sum-of-any-subarray/)
 
-## LeetCode - Greedy II `40 problems`
+### LeetCode - Greedy II `40 problems`
 
 - [longest happy string](https://leetcode.com/problems/longest-happy-string/)
 - [task scheduler](https://leetcode.com/problems/task-scheduler/)
@@ -127,7 +126,7 @@
 - [cinema seat allocation](https://leetcode.com/problems/cinema-seat-allocation/)
 - [minimum moves to make array complementary](https://leetcode.com/problems/minimum-moves-to-make-array-complementary/)
 
-## LeetCode - Greedy III `40 problems`
+### LeetCode - Greedy III `40 problems`
 
 - [minimum number of swaps to make the binary string alternating](https://leetcode.com/problems/minimum-number-of-swaps-to-make-the-binary-string-alternating/)
 - [jump game](https://leetcode.com/problems/jump-game/)
@@ -168,7 +167,7 @@
 - [construct target array with multiple sums](https://leetcode.com/problems/construct-target-array-with-multiple-sums/)
 - [create maximum number](https://leetcode.com/problems/create-maximum-number/)
 
-## LeetCode - Graph I `30 problems`
+### LeetCode - Graph I `30 problems`
 
 - [find the town judge](https://leetcode.com/problems/find-the-town-judge/)
 - [find center of star graph](https://leetcode.com/problems/find-center-of-star-graph/)
@@ -200,7 +199,7 @@
 - [possible bipartition](https://leetcode.com/problems/possible-bipartition/)
 - [shortest path in a hidden grid](https://leetcode.com/problems/shortest-path-in-a-hidden-grid/)
 
-## LeetCode - Graph II `30 problems`
+### LeetCode - Graph II `30 problems`
 
 - [graph valid tree](https://leetcode.com/problems/graph-valid-tree/)
 - [all paths from source lead to destination](https://leetcode.com/problems/all-paths-from-source-lead-to-destination/)