✦@confuse__coder · DSA · Hinglish · daily

Good. Chalo samjhte hain.

DSA aur coding concepts, Hinglish mein. Reels jo 45 second mein samjha dein, notes jo exam se ek raat pehle bacha lein.

Notes padho →Follow @confuse__coder

Reel pe comment karo NOTES, link yahin aata hai.

memo.py · EP 06
1
O(log n)fib(50)memo[n]base case4000 cr → 99stack overflow
▲1 crore numbers●Duniya ka sabse mushkil Sudoku = 1 secon■4 Queens, 1 board = kitne tareeke?▲3 dost, 1 photo = kitne pose?●3 toppings = kitne pizza?■Memo bhi crash ho gaya?▲4000 crore calls → sirf 99●fib■VPN asal mein kaise kaam karta hai?▲Seat "Hold" Lock●Recursion■Call Stack▲Backtracking●System Design■GitHub Repos▲AI Tools●1 crore numbers■Duniya ka sabse mushkil Sudoku = 1 secon▲4 Queens, 1 board = kitne tareeke?●3 dost, 1 photo = kitne pose?■3 toppings = kitne pizza?▲Memo bhi crash ho gaya?●4000 crore calls → sirf 99■fib▲VPN asal mein kaise kaam karta hai?●Seat "Hold" Lock■Recursion▲Call Stack●Backtracking■System Design▲GitHub Repos●AI Tools
0+
notes pages
comment NOTES → yahan
0+
output-game sawaal
bina terminal, sirf dimaag
0+
build projects
starter + tests + solution
0+
accounts
DSA + .dev
✎notes

Reel dekhi?
Ab notes padho.

Har reel ka cheat sheet: concept, code, dry run aur common galtiyan. Exam se ek raat pehle wala dost.

DSAEP 12

1 crore numbers: 14 ghante vs 1 second? (Merge Sort, Divide & Conquer)

1 crore (10⁷) numbers sort karne hain. Seedha tareeka (bubble / selection sort): har number ko baaki sab se compare karo → n²/2 ≈ 50 lakh crore…

comment “NOTES”full page soon →
DSAEP 11

Duniya ka sabse mushkil Sudoku = 1 second? (Sudoku Solver, Backtracking)

"World's hardest Sudoku" (Arto Inkala, 2012) mein sirf 21 numbers diye hain, 60 khaane khaali. Har khaane mein 9 options → sab try karo toh 9⁶⁰ ≈…

comment “NOTES”full page soon →
DSAEP 10

4 Queens, 1 board = kitne tareeke? (N-Queens, Backtracking)

4×4 chessboard pe 4 queens bithani hain, aur koi queen kisi doosri ko maar na sake: na same row, na same column, na same diagonal. Har tareeka try…

comment “NOTES”full page soon →
DSAEP 09

3 dost, 1 photo = kitne pose? (Permutations)

Teen dost: Satyam, Anuj, Vishal. Ek photo mein kaun left, kaun beech, kaun right: kitne alag photo? Pichli baar (subsets) jawab 8 tha, toh log…

comment “NOTES”full page soon →
DSAEP 08

3 toppings = kitne pizza? (Take / Skip, Subsets)

Pizza pe 3 toppings: cheese, olives, paneer. Kitne alag pizza ban sakte hain? Zyaadatar log bolte hain 3 ya 6. Sahi jawab: 8 (khaali pizza bhi…

comment “NOTES”full page soon →
DSAEP 07

Memo bhi crash ho gaya? (Tabulation)

EP 06 mein memoization ne fib(50) turant solve kar diya. Par fib(10 lakh) chalao toh Stack Overflow. Diary (memo) toh hai, par recursion abhi bhi…

comment “NOTES”full page soon →
DSAEP 06

4000 crore calls → sirf 99 (Memoization)

EP 05 mein fib(50) ne laptop hang kar diya tha: lagbhag 4,073 crore calls. "Naya laptop le lo" kaam nahi karta. fib(100) ko naive recursion se…

comment “NOTES”full page soon →
DSAEP 05

fib(50) ne laptop hang kyun kar diya? (Recursion Tree)

Teen line ka Fibonacci code. fib(5) turant chalta hai, fib(40) kuch seconds leta hai, fib(50) pe sirf loading dikhta hai. Koi error nahi aata, koi…

comment “NOTES”full page soon →
.devEP 02

VPN asal mein kaise kaam karta hai?

Tum cafe ke free WiFi se connect ho. Most websites HTTPS use karti hain, toh page ka content encrypted hota hai. Par parcel ke upar ka label fir…

comment “VPN”full page soon →
Learn.
Build.
Unconfuse.
▶playground · EP 06

Khud try karo.

Reel mein fib(50) ne laptop hang kar diya tha. Slider khiskao, phir memo on karo. Har dot = ek function call.

function calls
21,891
10⁹ calls/sec pe time
pal bhar mein

Same fib(k) baar baar zero se nikal raha hai. n badhao, dekho kya hota hai.

?game · output batao

Output
batao.

Code padho, dimaag mein chalao, answer chuno. Na terminal, na compiler. Sirf tum aur tumhara dimaag.

score0/8
streak0
best0

tip: keyboard pe 1–4 dabao, Enter = next

Q1 · Recursion · EP 02python
def f(n):
    if n == 0: return 0
    return n + f(n-1)
print(f(4))

Output kya hoga?

⚒build it yourself

Sirf dekho mat.
Banao.

Har project ka boilerplate ready hai. Tum sirf woh core logic likhte ho jo reel mein sikhaya. Tests turant bata dete hain: PASSED ya FAILED.

01
Backtracking

College Timetable Generator

Sudoku solve karne wali same backtracking trick se apne college ka timetable banao.

starter ✎tests ✓solution 🔒C++Python
02
Merge Sort

Leaderboard Merge

Do game servers ke leaderboard ek mein jodo, phir khud ka merge sort likho,

starter ✎tests ✓solution 🔒C++Python
+
next reel

Agla project tum chuno

Kis topic pe build karna hai? Kisi bhi reel pe comment karo. Sabse zyada maanga gaya topic agla project banega.

✦dono accounts

Confusion ka ilaaj,
roz ek reel.

DSA ke liye ek, dev world ke liye ek. Follow karo, comment karo NOTES, aur yahan wapas aao.

@confuse__coder ↗@confuse__coder.dev ↗