| 1 |
Day 1 |
24 March 2022 |
Two Sum |
Solution |
| 2 |
Day 1 |
24 March 2022 |
Best Time to Buy and Sell Stocks |
Solution |
| 3 |
Day 1 |
24 March 2022 |
Plus One |
Solution |
| 4 |
Day 1 |
24 March 2022 |
Move Zeros |
Solution |
| 5 |
Day 2 |
25 March 2022 |
Square of Sorted Array |
Solution |
| 6 |
Day 2 |
25 March 2022 |
Best Time to Buy and Sell Stocks II |
Solution |
| 7 |
Day 2 |
25 March 2022 |
Find Pivot Index |
Solution |
| 8 |
Day 2 |
25 March 2022 |
Majority Element |
Solution |
| 9 |
Day 3 |
26 March 2022 |
Pascal Triangle |
Solution |
| 10 |
Day 3 |
26 March 2022 |
Remove Duplicates from Sorted Array |
Solution |
| 11 |
Day 3 |
26 March 2022 |
Merge Intervals |
Solution |
| 12 |
Day 3 |
26 March 2022 |
3 Sum |
Solution |
| 13 |
Day 4 |
27 March 2022 |
Insert/Delete Get Random |
Solution |
| 14 |
Day 4 |
27 March 2022 |
SubArray Sum Equals K |
Solution |
| 15 |
Day 4 |
27 March 2022 |
Next Permutation |
Solution |
| 16 |
Day 4 |
27 March 2022 |
Insert/Delete Get Randome |
Solution |
| 17 |
Day 5 |
28 March 2022 |
Spiral Matrix |
Solution |
| 18 |
Day 5 |
28 March 2022 |
Rotate Image |
Solution |
| 19 |
Day 5 |
28 March 2022 |
Word Search |
Solution |
| 20 |
Day 6 |
29 March 2022 |
Three Sum Closet |
Solution |
| 21 |
Day 6 |
29 March 2022 |
Game of Life |
Solution |
| 22 |
Day 6 |
29 March 2022 |
Pair Divisble by 60 |
Solution |
| 23 |
Day 6 |
29 March 2022 |
4 Sum |
Solution |
| 24 |
Day 7 |
30 March 2022 |
Combination Sum |
Solution |
| 25 |
Day 7 |
30 March 2022 |
Jump Game 2 |
Solution |
| 26 |
Day 7 |
30 March 2022 |
Max Points Obtain from Cards |
Solution |
| 27 |
Day 8 |
31 March 2022 |
Max Area of Peice of Cake after Horizontal and Vertical Cuts |
Solution |
| 28 |
Day 8 |
31 March 2022 |
Max Area of Island |
Solution |
| 29 |
Day 8 |
31 March 2022 |
All Duplicates in Array |
Solution |
| 30 |
Day 8 |
31 March 2022 |
K diff pair in array |
Solution |
| 31 |
Day 9 |
1 April 2022 |
Invalid Transaction |
Solution |
| 32 |
Day 9 |
1 April 2022 |
Jump Game |
Solution |
| 33 |
Day 9 |
1 April 2022 |
Subarray Sum divisble by K |
Solution |
| 34 |
Day 10 |
2 April 2022 |
Best Time to Buy and Sell Stock III |
Solution |
| 35 |
Day 10 |
2 April 2022 |
First Missing Positive |
Solution |
| 36 |
Day 10 |
2 April 2022 |
Largest Rectangle in Historgram |
Solution |
| 37 |
Day 11 |
3 April 2022 |
Insert/Delete and get Random O(1) with duplicates |
Solution |
| 38 |
Day 11 |
3 April 2022 |
Max Value of equation |
Solution |
| 39 |
Day 12 |
4 April 2022 |
Partition Lables |
Solution |
| 40 |
Day 12 |
4 April 2022 |
Sort Colors |
Solution |
| 41 |
Day 13 |
5 April 2022 |
Longest Repeating Character Replacement |
Solution |
| 42 |
Day 13 |
5 April 2022 |
Subarray with k Different Integers |
Solution |
| 43 |
Day 14 |
6 April 2022 |
Negative Number in Sorted Matrix |
Solution |
| 44 |
Day 14 |
6 April 2022 |
Peak Index in Moutain Array |
Solution |
| 45 |
Day 14 |
6 April 2022 |
Time Based Key Value Store |
Solution |
| 46 |
Day 14 |
6 April 2022 |
Search in Rotated Sorted Array |
Solution |
| 47 |
Day 15 |
7 April 2022 |
Power (X, N) |
Solution |
| 48 |
Day 15 |
7 April 2022 |
Power (X, N) |
Solution |
| 49 |
Day 15 |
7 April 2022 |
Find Peak Element |
Solution |
| 50 |
Day 15 |
7 April 2022 |
Search in 2D matrix |
Solution |
| 51 |
Day 16 |
8 April 2022 |
Divide Two Numbers |
Solution |
| 52 |
Day 16 |
8 April 2022 |
Capacity to Ship Package within D Days |
Solution |
| 53 |
Day 16 |
8 April 2022 |
Minimum Limit of balls in the bag |
Solution |
| 54 |
Day 16 |
8 April 2022 |
Median of Two Sorted Array |
Solution |
| 55 |
Day 17 |
9 April 2022 |
Median of Two Sorted Array |
Solution |
| 56 |
Day 17 |
9 April 2022 |
Median of Two Sorted Array |
Solution |
| 57 |
Day 18 |
10 April 2022 |
Hashing Introduction |
Solution |
| 58 |
Day 18 |
10 April 2022 |
Open Addressing |
Solution |
| 59 |
Day 18 |
10 April 2022 |
Chaining |
Solution |
| 60 |
Day 19 |
11 April 2022 |
Verify Alien Dictionary |
Solution |
| 61 |
Day 19 |
11 April 2022 |
Design HashMap |
Solution |
| 62 |
Day 19 |
11 April 2022 |
Top K frequent Element |
Solution |
| 63 |
Day 19 |
11 April 2022 |
Design Twitter |
Solution |
| 64 |
Day 20 |
12 April 2022 |
Reverse A Linked List |
Solution |
| 65 |
Day 20 |
12 April 2022 |
Middle Element of a Linked List |
Solution |
| 66 |
Day 20 |
12 April 2022 |
Merge Two Sorted Linked List |
Solution |
| 67 |
Day 20 |
12 April 2022 |
Remove nth Node from end of a Linked List |
Solution |
| 68 |
Day 21 |
13 April 2022 |
Delete a Node in Linked List |
Solution |
| 69 |
Day 21 |
13 April 2022 |
Add Two Number 2 |
Solution |
| 70 |
Day 21 |
13 April 2022 |
InterSection of Two LinkedLIst |
Solution |
| 71 |
Day 21 |
13 April 2022 |
Palindrome Linked List |
Solution |
| 72 |
Day 22 |
14 April 2022 |
Reverse Nodes in K Group |
Solution |
| 73 |
Day 22 |
14 April 2022 |
Linkedlist Cycle 2 |
Solution |
| 74 |
Day 22 |
14 April 2022 |
Rotate List |
Solution |
| 75 |
Day 23 |
15 April 2022 |
Flatten Doubly LinkedList |
Solution |
| 76 |
Day 23 |
15 April 2022 |
Copy LinkedList with Random Pointer |
Solution |
| 77 |
Day 23 |
15 April 2022 |
Duplicate Number |
Solution |
| 78 |
Day 24 |
16 April 2022 |
Next Greater Element |
Solution |
| 79 |
Day 24 |
16 April 2022 |
Next Greater Element II |
Solution |
| 80 |
Day 24 |
16 April 2022 |
Stack Using Queues |
Solution |
| 81 |
Day 24 |
16 April 2022 |
Queue Using Stack |
Solution |
| 82 |
Day 25 |
17 April 2022 |
Valid Parenthesis |
Solution |
| 84 |
Day 25 |
17 April 2022 |
Min Stack |
Solution |
| 85 |
Day 25 |
17 April 2022 |
Help Classmates |
Solution |
| 86 |
Day 25 |
17 April 2022 |
LRU Cache |
Solution |
| 87 |
Day 26 |
18 April 2022 |
Largest Area in Historgram |
Solution |
| 88 |
Day 26 |
18 April 2022 |
Sliding Window Maximum |
Solution |
| 89 |
Day 26 |
18 April 2022 |
LFU Cache |
Solution |
| 90 |
Day 27 |
19 April 2022 |
Diameter of a tree |
Solution |
| 91 |
Day 27 |
19 April 2022 |
Invert Binary Tree |
Solution |
| 92 |
Day 27 |
19 April 2022 |
SubTree of Another Tree |
Solution |
| 93 |
Day 27 |
19 April 2022 |
Symmetric Tree |
Solution |
| 94 |
Day 28 |
20 April 2022 |
Convert Sorted Array to BST |
Solution |
| 95 |
Day 28 |
20 April 2022 |
Merge Two Trees |
Solution |
| 96 |
Day 28 |
20 April 2022 |
Max Depth of a binary tree |
Solution |
| 97 |
Day 28 |
20 April 2022 |
Binary Tree Paths |
Solution |
| 98 |
Day 29 |
21 April 2022 |
Same Tree |
Solution |
| 99 |
Day 29 |
21 April 2022 |
LCA of BST |
Solution |
| 100 |
Day 29 |
21 April 2022 |
Path Sum |
Solution |
| 101 |
Day 29 |
21 April 2022 |
Min Absolute Difference in BST |
Solution |
| 102 |
Day 30 |
22 April 2022 |
Sum of Leaf Leaves |
Solution |
| 103 |
Day 30 |
22 April 2022 |
Balance Binary Tree |
Solution |
| 104 |
Day 30 |
22 April 2022 |
Maximum Width of Binary Tree |
Solution |
| 105 |
Day 30 |
22 April 2022 |
Count Good Node in Binary Tree |
Solution |
| 106 |
Day 31 |
23 April 2022 |
Lca of Binary Tree |
Solution |
| 107 |
Day 31 |
23 April 2022 |
Right View Of Binary Tree |
Solution |
| 108 |
Day 31 |
23 April 2022 |
All Nodes at K distance in Binary Tree |
Solution |
| 109 |
Day 31 |
23 April 2022 |
Serialize Deserialize Binary Tree |
Solution |
| 110 |
Day 32 |
24 April 2022 |
Zig Zag order Traversal |
Solution |
| 111 |
Day 32 |
24 April 2022 |
Binary Tree Iterator |
Solution |
| 112 |
Day 32 |
24 April 2022 |
Level Order Traversal |
Solution |
| 113 |
Day 32 |
24 April 2022 |
Path Sum III |
Solution |
| 114 |
Day 33 |
25 April 2022 |
Binary Tree from PreOrder and PostOrder |
Solution |
| 115 |
Day 33 |
25 April 2022 |
Populating Right Pointer in Each Node |
Solution |
| 116 |
Day 33 |
25 April 2022 |
Binary Tree to LinkedList |
Solution |
| 117 |
Day 34 |
26 April 2022 |
BST Search and Insertion |
Solution |
| 118 |
Day 34 |
26 April 2022 |
BST Delete |
Solution |
| 119 |
Day 34 |
26 April 2022 |
Binary Tree to LinkedList |
Solution |
| 120 |
Day 34 |
26 April 2022 |
Range Sum BST |
Solution |
| 121 |
Day 35 |
27 April 2022 |
Convert Sorted Array to BST |
Solution |
| 122 |
Day 35 |
27 April 2022 |
LCA of BST |
Solution |
| 123 |
Day 35 |
27 April 2022 |
Min Abs Difference in BST |
Solution |
| 124 |
Day 35 |
27 April 2022 |
Validate BST |
Solution |
| 125 |
Day 36 |
28 April 2022 |
Unique BST II |
Solution |
| 126 |
Day 36 |
28 April 2022 |
Kth smallest in BST |
Solution |
| 127 |
Day 36 |
28 April 2022 |
Unique BST |
Solution |
| 128 |
Day 36 |
28 April 2022 |
Recover BST |
Solution |
| 129 |
Day 37 |
29 April 2022 |
Binary Heap |
Solution |
| 130 |
Day 37 |
29 April 2022 |
Time Complexity of Building Heap |
Solution |
| 131 |
Day 37 |
29 April 2022 |
Application of Heap Data Structure |
Solution |
| 132 |
Day 37 |
29 April 2022 |
Heap Sort |
Solution |
| 133 |
Day 37 |
29 April 2022 |
Binary Heap vs Priority Queue |
Solution |
| 134 |
Day 38 |
30 April 2022 |
Merge K sorted Array |
Solution |
| 135 |
Day 38 |
30 April 2022 |
Nearly Sorted Algo |
Solution |
| 136 |
Day 38 |
30 April 2022 |
Median in Large Stream |
Solution |
| 137 |
Day 38 |
30 April 2022 |
Kth Largest Element in Array |
Solution |
| 138 |
Day 39 |
19 May 2022 |
Merge K sorted List |
Solution |
| 139 |
Day 39 |
19 May 2022 |
SkyLine Problem |
Solution |
| 140 |
Day 39 |
19 May 2022 |
Kth Largest Element in Array |
Solution |
| 141 |
Day 40 |
19 May 2022 |
Kth Largest Element in Array |
Solution |
| 142 |
Day 40 |
19 May 2022 |
Kth Largest Element in Array |
Solution |
| 142 |
Day 40 |
19 May 2022 |
Kth Largest Element in Array |
Solution |
| 143 |
Day 41 |
26 May 2022 |
N meeting in One Room |
Solution |
| 144 |
Day 41 |
26 May 2022 |
Activity Selection Problem |
Solution |
| 145 |
Day 41 |
26 May 2022 |
Min No of Coins |
Solution |
| 146 |
Day 42 |
27 May 2022 |
Fractional KnapSack |
Solution |
| 147 |
Day 42 |
27 May 2022 |
Min No of Platforms |
Solution |
| 148 |
Day 42 |
27 May 2022 |
Job Sequencing Problem |
Solution |
| 149 |
Day 43 |
30 May 2022 |
Rat in Maze |
Solution |
| 150 |
Day 43 |
30 May 2022 |
Knight Tour Problem |
Solution |
| 151 |
Day 43 |
30 May 2022 |
Subset Sum |
Solution |
| 152 |
Day 44 |
31 May 2022 |
Letter Combination |
Solution |
| 153 |
Day 44 |
31 May 2022 |
Generate Parenthesis |
Solution |
| 154 |
Day 44 |
31 May 2022 |
Sudoku Solver |
Solution |
| 154 |
Day 44 |
31 May 2022 |
Sudoku Solver 2 |
Solution |
| 155 |
Day 45 |
1 June 2022 |
Permutation |
Solution |
| 156 |
Day 45 |
1 June 2022 |
Combination |
Solution |
| 157 |
Day 45 |
1 June 2022 |
Combination Sum |
Solution |
| 158 |
Day 45 |
1 June 2022 |
Combination Sum II |
Solution |
| 159 |
Day 46 |
6 June 2022 |
N Queen Problem |
Solution |
| 160 |
Day 46 |
6 June 2022 |
Subsets |
Solution |
| 161 |
Day 46 |
6 June 2022 |
Gray Code |
Solution |
| 162 |
Day 46 |
6 June 2022 |
Unique BST 2 |
Solution |
| 163 |
Day 47 |
7 June 2022 |
DP |
Solution |
| 164 |
Day 47 |
7 June 2022 |
DP II |
Solution |
| 165 |
Day 47 |
7 June 2022 |
DP III |
Solution |
| 166 |
Day 47 |
7 June 2022 |
DP IV |
Solution |
| 167 |
Day 48 |
8 June 2022 |
Max Product Subarray |
Solution |
| 168 |
Day 48 |
8 June 2022 |
Longest Increasing Subsequence |
Solution |
| 169 |
Day 48 |
8 June 2022 |
Longest Common Subsequence |
Solution |
| 170 |
Day 49 |
21 June 2022 |
01 Knapsack |
Solution |
| 171 |
Day 49 |
21 June 2022 |
Edit Distance |
Solution |
| 172 |
Day 49 |
21 June 2022 |
Max Increasing Subsequence |
Solution |
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