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Karthik Kumar

Lv.13 Top 7%

@kkumar · joined Nov 2025

C++ main, Python for interviews. Chasing a 100-day streak.

IIT Bombay Vizag 21 Following 26 Followers
Level 13 425 / 1000 XP · 575 to Level 14

73/115
Problems solved
66%
Acceptance · 387 subs
#15
Global rank · top 7%
12425
Total XP
0d
Current streak
3965
MateCoins

387 submissions in the past year

Active days 189 Max streak 8d

Solved problems

73 of 115
Easy 38/38
Medium 35/59
Hard 0/18

Languages

JavaScript 73 solved
C++ 8 solved
Java 8 solved
Python 7 solved

Skills

Array ×37 String ×20 Dynamic Programming ×14 Hash Table ×14 Math ×14 Two Pointers ×10 Binary Search ×8 Bit Manipulation ×7 Sorting ×7 Matrix ×6 Stack ×4 Divide and Conquer ×3

Badges

All badges →
🧭 Path Finder
⚔️ First Duel
✨ Spark
🌐 Polyglot
🏏 Half Century
🔨 Problem Crusher
🌡️ Getting Warm
🩸 First Blood
Solve more →
Running Sum of an Array
4 days, 8 hours ago
Ransom Note
5 days, 2 hours ago
Longest Increasing Subsequence
5 days, 3 hours ago
Next Greater Element (Circular)
1 week ago
Happy Number
1 week, 1 day ago
Add Binary Strings
1 week, 5 days ago
First Bad Version
1 week, 5 days ago
Plus One
2 weeks, 5 days ago

Running Sum of an Array

Accepted · JavaScript · 0.43s

4 days, 8 hours ago

Running Sum of an Array

Wrong Answer · JavaScript · 1.51s

4 days, 8 hours ago

Move Zeroes

Wrong Answer · JavaScript · 0.28s

5 days, 1 hour ago

Ransom Note

Accepted · JavaScript · 0.44s

5 days, 2 hours ago

Ransom Note

Compilation Error · JavaScript

5 days, 2 hours ago

Longest Increasing Subsequence

Accepted · JavaScript · 0.51s

5 days, 3 hours ago

Longest Increasing Subsequence

Wrong Answer · JavaScript · 0.29s

5 days, 3 hours ago

Longest Increasing Subsequence

Wrong Answer · JavaScript · 0.03s

5 days, 3 hours ago

Longest Increasing Subsequence

Time Limit Exceeded · JavaScript · 1.71s

5 days, 3 hours ago

Longest Increasing Subsequence

Accepted · JavaScript · 0.52s

5 days, 23 hours ago

Learning paths

Explore →
DSA Intermediate 100%

Companies practiced

Explore →
F Flipkart 20 solved C CRED 17 solved A Amazon 17 solved M Meta 16 solved W Walmart 14 solved U Uber 14 solved A Apple 13 solved Z Zomato 12 solved

Certifications

🎓

Graph Algorithms Expert

Earned Jun 8, 2026 · Verify ↗

 🎓

DSA Fundamentals Certificate

Earned Jun 6, 2026 · Verify ↗

 🎓

DSA Intermediate Certificate

Earned May 7, 2026 · Verify ↗

 🎓

Arrays & Hashing Foundations

Earned Feb 3, 2026 · Verify ↗

 🎓

DP Patterns Certified

Earned Jan 17, 2026 · Verify ↗

 🎓

Graph Navigator

Earned Jan 13, 2026 · Verify ↗

Contest history

All contests →

CompileMate Weekly Contest 13

Nov 1, 2026

–

0 pts

CompileMate Monthly Challenge: November 2026

Nov 1, 2026

–

0 pts

CompileMate Weekly Contest 9

Oct 4, 2026

#1

1000 pts

CompileMate Weekly Contest 8

Sep 27, 2026

#6

1000 pts

CompileMate Monthly Challenge: September 2026

Sep 12, 2026

#14

600 pts

CompileMate Weekly Contest 5

Sep 6, 2026

#2

1000 pts