Hard
🕸 Graph
Dijkstra's Shortest Path
Priority queue use karke source se sabhi nodes tak shortest paths dhundhein. GPS navigation ki backbone.
Time: O((V + E) log V)
Space: O(V)
25 min
000
PyAnimateMastery
Mastery
Saare tracks
Track
Mastery
Internals samajhne wale experts
The deep end. Ab scripts chodiye systems banana sikhiye. Un graph aur dynamic programming pattern ko master karein jo Staff/Principal engineers technical interviews me maangte hain.
Graph traversal
Dynamic programming
System-level thinking
10 is track mein algorithms
Shuru karein
Hard
🧮 Dynamic Programming
0/1 Knapsack (DP)
Weight limit ke andar value maximize karein. DP table ko row by row bharte dekhein.
Time: O(n × W)
Space: O(n × W)
25 min
000
Hard
🧮 Dynamic Programming
Longest Common Subsequence
Do strings mein shared sabse lamba subsequence dhundhein. Diff tools aur DNA alignment ka core.
Time: O(m × n)
Space: O(m × n)
20 min
000
Hard
🕸 Graph
Topological Sort
Dependencies respect karte hue tasks ko order karein. Kahn's algorithm ko zero in-degree nodes hataate dekhein.
Time: O(V + E)
Space: O(V)
20 min
000
Hard
🕸 Graph
Kruskal's MST
Cycles banaye bina lowest-weight edges ko greedily add karke minimum spanning tree banayein.
Time: O(E log E)
Space: O(V)
25 min
000
Hard
🌳 Trees
Trie (Prefix Tree)
Letter by letter strings insert aur search karein. Dekhein ki autocomplete under the hood kaise kaam karta hai.
Time: O(m) per op
Space: O(m × n)
20 min
000
Hard
🕸 Graph
Floyd-Warshall
3-loop DP ke saath all-pairs shortest paths. O(V³) mein distance matrix update hote dekhein.
Time: O(V³)
Space: O(V²)
22 min
000
Hard
🌳 Trees
Segment Tree
O(log n) mein range queries aur point updates. Tree build aur sums upar propagate hote dekhein.
Time: O(log n) query/update
Space: O(n)
25 min
000
Hard
🧮 Dynamic Programming
Coin Change (DP)
Ek amount banane ke liye minimum coins. DP array ko 0 se target tak bharte dekhein.
Time: O(amount × n)
Space: O(amount)
18 min
000
Hard
Bit Ops
Bit Manipulation Tricks
AND, OR, XOR, shifts — cryptography, graphics, aur competitive programming ke peeche ke operations.
Time: O(1)
Space: O(1)
18 min
000