Follow

Ritika Khan

Lv.5

@ritika_24 · joined Dec 2025

Ex-intern, now SDE. Mentoring juniors on CompileMate.

NSUT Delhi Bhubaneswar 17 Following 5 Followers

Level 5 650 / 1000 XP · 350 to Level 6

36/115

Problems solved

70%

Acceptance · 145 subs

#39

Global rank · top 17%

4650

Total XP

0d

Current streak

1075

MateCoins

145 submissions in the past year

Active days 69 Max streak 7d

OctNovDecJanFebMarAprMayJunJulAugSepOct

MonWedFri

Less More

Solved problems

36 of 115

Easy 31/38

Medium 5/59

Hard 0/18

Languages

Java 35 solved

Python 7 solved

C++ 5 solved

Skills

Array ×18 Math ×9 String ×9 Bit Manipulation ×6 Hash Table ×6 Two Pointers ×6 Binary Search ×4 Divide and Conquer ×3 Prefix Sum ×3 Dynamic Programming ×2 Sorting ×2 Stack ×2

Badges

All badges →

⚔️ First Duel

✨ Spark

🌐 Polyglot

🔨 Problem Crusher

🌡️ Getting Warm

🩸 First Blood

Solve more →

Two Sum II - Input Array Is Sorted Java

6 days, 23 hours ago

First Bad Version Python

Shortest Subarray With Sum ≥ Target Python

1 week, 2 days ago

Valid Parentheses Java

1 week, 2 days ago

1 week, 2 days ago

Maximum Subarray Java

1 week, 3 days ago

Pascal's Triangle Java

1 week, 3 days ago

Max Consecutive Ones Java

1 week, 5 days ago

Contains Duplicate

Time Limit Exceeded · Python · 1.36s

2 days, 3 hours ago

Roman to Integer

Wrong Answer · Java · 0.19s

6 days, 12 hours ago

Two Sum II - Input Array Is Sorted

Accepted · Java · 0.26s

6 days, 23 hours ago

Two Sum II - Input Array Is Sorted

Wrong Answer · Java · 1.36s

6 days, 23 hours ago

Third Distinct Maximum

Time Limit Exceeded · Java · 1.14s

First Bad Version

Accepted · Python · 0.34s

Shortest Subarray With Sum ≥ Target

Accepted · Python · 0.25s

1 week, 2 days ago

Shortest Subarray With Sum ≥ Target

Runtime Error · Python · 0.04s

1 week, 2 days ago

Valid Parentheses

Accepted · Java · 0.32s

1 week, 2 days ago

FizzBuzz

Accepted · Java · 0.10s

1 week, 2 days ago

Learning paths

Explore →

Graph Algorithms 0%

Stacks & Monotonic Stacks 0%

Graphs: BFS, DFS & Shortest Paths 33%

Companies practiced

Explore →

C CRED 11 solved F Flipkart 11 solved Z Zomato 9 solved A Amazon 9 solved M Meta 8 solved S Salesforce 7 solved A Apple 7 solved M Microsoft 6 solved

Certifications

Arrays & Hashing Foundations

Earned Sep 14, 2026 · Verify ↗

Data Structures & Algorithms Specialist

Earned Aug 29, 2026 · Verify ↗

Graph Algorithms Expert

Earned Jul 7, 2026 · Verify ↗

DSA Fundamentals Certificate

Earned Jul 7, 2026 · Verify ↗

Sliding Window Practitioner

Earned Mar 15, 2026 · Verify ↗

Contest history

All contests →

CompileMate Weekly Contest 13

Nov 1, 2026

–

0 pts

CompileMate Weekly Contest 12

Oct 25, 2026

–

0 pts

CompileMate Weekly Contest 8

Sep 27, 2026

#23

600 pts

CompileMate Weekly Contest 6

Sep 13, 2026

#15

600 pts

CompileMate Weekly Contest 4

Aug 30, 2026

#56

0 pts

CompileMate Weekly Contest 2

Aug 16, 2026

#16

200 pts