Jun 8
#Lecture85 of STRIKE DSA by @rohit_negi9
Today Topic Covered:-
Bellmon_ford Algorithm
used in directed, to detect negative cycle
Why Bellmon Ford better to detect -ve cycle over Dijkstra Algorithm
#strikecoderarmy #dsaproblems
#dailycoding #graph
4
45
Jun 5
#Lecture84 of STRIKE DSA by @rohit_negi9
Today Problems Covered:-
1. Shortest path in Directed Acyclic Graph.
2. Shortest path in undirected graph.
#strikecoderarmy #dsaproblems
#dailycoding #graphProblems
19
173
Jun 4
#Lecture83 of STRIKE DSA by @rohit_negi9
Today Problems Covered:-
1. Parallel Courses II
2. Course Schedule II
3. Alien Dictionary
#strikecoderarmy #dsaproblems
#dailycoding #graphProblems
2
1
31
458
Jun 3
#Lecture82 of STRIKE DSA by @rohit_negi9
Today Topic Covered:
1. Shortest path in undirected graph.
2. Shortest path in directed graph.
2. Dijkstra Algorithm
#strikecoderarmy #dsaproblems
#dailycoding #graphproblems
3
1
30
564
May 28
#Lecture78 of STRIKE DSA by @rohit_negi9
Today Problems Covered:-
1. Find the Number of Islands.
2. Replace 0's with X's.
3. Prerequiste tasks.
#strikecoderarmy #dsaproblems
#dailycode #graphProblems
13
121
May 21
#Lecture74 of STRIKE DSA by @rohit_negi9
Today topic Covered:-
Undirected graph cycle using BFS.
Topological Sort using DFS and BFS(kahn's algorithm)
Directed graph cycle
#strikecoderarmy #dsaproblems
#dailycodepractice #graph
1
21
237
May 20
#Lecture73 of STRIKE DSA by @rohit_negi9
Today Topic Covered:-
Graph Traversals
1. BFS (Breadth first Search)
2. DFS (Depth First Search)
Undirected Graph cycle
#strikecoderarmy #dsaproblems
#dailycode #graph
1
10
219
May 18
#Lecture72 of STRIKE DSA by @rohit_negi9
Today Topic Covered:-
Graphs basics.
Types of graph.
implementation using matrix.
#strikecoderarmy #dsaproblems
#codingpractice #graph
2
1
27
316
May 12
#Lecture69 of STRIKE DSA by @rohit_negi9
Topic Covered:-
unordered map, sliding window.
Problems:-
1. Zero Sum SubArrays.
2. SubArray Sum Equals k.
3. SubArray Sum Divisible by k.
4. SubArray Product < k.
#strikecoderarmy #dsaproblems
1
21
212
May 4
#Lecture66 of STRIKE DSA by @rohit_negi9
Today covered:-
STL in C
#strikecoderarmy #dsaproblems
#learning
1
15
206
Apr 28
#Lecture63 of STRIKE DSA by @rohit_negi9
Today Topic Covered:-
Priority Queue, Heap Sort, Step down approach.
Real world usecase of heaps.
Problems:-
1. Height of Heap.
2. Minimum cost of ropes.
3. Gift from richest pile.
#Strikecoderarmy #dsaproblems
#learning
2
19
443
Apr 20
#Lecture61 of STRIKE DSA by @rohit_negi9
Today Problems Covered:-
1. Find Common Nodes in BSTs.
2. Merge two BSTs.
3. Sorted linked list to BST.
Understands why array are not used in BST implementation.
#strikecoderarmy #dsaproblems
#codingpractice #BST
2
21
404
Apr 18
#Lecture60 of STRIKE DSA by @rohit_negi9
Today Problems Covered:-
1. Preorder & BST
2. Lowest Common Ancestor.
3. BST with Dead End.
4. Fixing two nodes in BST.
#strikecoderarmy #dsaproblems
#codingpractice #binarysearchtree
1
6
139
Apr 15
#Lecture59 of STRIKE DSA by @rohit_negi9
Today Problems Covered:-
1. BST keys in a Range.
2. Check for BST.
3. Minimum distance between two nodes.
4. Array to BST.
5. Construct BST from preorder.
#strikecoderarmy #dsaproblems
#codingpratice #bst
1
17
201
Apr 13
#Lecture58 of STRIKE DSA by @rohit_negi9
Today Topic Covered:-
1. Binary search tree Implementation.
2. Search node in BST.
3. Delete node in BST.
4. Kth smallest element in BST.
#strikecoderarmy #dsaproblems
#codingpratice #binarysearchtree
2
21
670
Apr 9
#Lecture57 of STRIKE DSA by @rohit_negi9
Today Problems Covered:-
1. Morris Traversal on InOrder, PreOrder, PostOrder.
2. Constructing Tree from InOrder&PreOrder.
3. Constructing Tree from InOrder&PostOrder.
#strikecoderarmy #dsaproblems
#codingpractice #treequestions
1
12
118
Apr 6
#Lecture55 of STRIKE DSA by @rohit_negi9
Today Problems Covered:-
1. Identical Trees.
2. Mirror Tree.
3. Balanced Tree Check.
4. Level order in spiral.
#strikecoderarmy #dsaproblems
#codingpractice #tree
2
8
243
Mar 26
#Lecture50 of STRIKE DSA by @rohit_negi9
Today Topic Covered:
Deque implementation using doubly linked list
First non-repeating character in a stream
#strikecoderarmy #dsaproblems
#dailycoding #deque
2
21
272
Mar 24
#Lecture48 of STRIKE DSA by @rohit_negi9
Today Problems Covered:-
1. Generate Binary Number.
2.Implement stack using queue.
3. Implement queue using stack.
4. First negative in every window of size k.
#strikecoderarmy #dsaproblems
#codingpractice #queue
1
3
33
424
Mar 20
#Lecture46 of STRIKE DSA by @rohit_negi9
Today Problems Covered:-
1. Next Greater Element II
2. Next Smaller Element
3. Previous Greater Element
4. Stock Span Problem
5. Largest Rectangle in a Histogram
#strikecoderarmy #dsaproblems
#codingpractice #stack
1
15
157