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Krishna Malhotra

Lv.13 Top 5%

@kmalhotra · joined Apr 2026

Java dev by day, contest grinder by night.

SDE at Oracle KL University Vijayawada 21 Following 27 Followers

Level 13 750 / 1000 XP · 250 to Level 14

81/115

Problems solved

59%

Acceptance · 362 subs

#11

Global rank · top 5%

12750

Total XP

0d

Current streak

5505

MateCoins

362 submissions in the past year

Active days 155 Max streak 33d

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Solved problems

81 of 115

Easy 38/38

Medium 41/59

Hard 2/18

Languages

C++ 78 solved

Python 12 solved

Java 5 solved

JavaScript 5 solved

Skills

Array ×44 String ×18 Dynamic Programming ×17 Hash Table ×17 Math ×16 Two Pointers ×11 Binary Search ×8 Sorting ×8 Bit Manipulation ×7 Prefix Sum ×5 Backtracking ×4 Divide and Conquer ×4

Badges

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🧭 Path Finder

🔥 On Fire

✨ Spark

🌐 Polyglot

🏏 Half Century

🔨 Problem Crusher

🌡️ Getting Warm

🩸 First Blood

Solve more →

Evaluate Reverse Polish Notation C++

2 days, 11 hours ago

Longest Repeating Character Replacement C++

2 days, 23 hours ago

First Bad Version C++

3 days, 2 hours ago

Unique Paths JavaScript

3 days, 14 hours ago

Number of 1 Bits C++

3 days, 23 hours ago

Number of Provinces C++

5 days, 23 hours ago

Longest Common Prefix C++

6 days, 4 hours ago

Best Time to Buy and Sell Stock C++

6 days, 11 hours ago

Evaluate Reverse Polish Notation

Accepted · C++ · 0.51s

2 days, 11 hours ago

Evaluate Reverse Polish Notation

Runtime Error · C++ · 1.32s

2 days, 12 hours ago

Longest Repeating Character Replacement

Accepted · C++ · 0.15s

2 days, 23 hours ago

Longest Repeating Character Replacement

Compilation Error · C++

Longest Repeating Character Replacement

Wrong Answer · C++ · 0.80s

First Bad Version

Accepted · C++ · 0.48s

3 days, 2 hours ago

First Bad Version

Wrong Answer · C++ · 0.68s

3 days, 2 hours ago

Unique Paths

Accepted · JavaScript · 0.21s

3 days, 14 hours ago

Number of 1 Bits

Accepted · C++ · 0.17s

3 days, 23 hours ago

Number of 1 Bits

Wrong Answer · C++ · 1.08s

3 days, 23 hours ago

Learning paths

Explore →

DSA Fundamentals 100%

Arrays & Hashing Essentials 100%

Companies practiced

Explore →

A Amazon 19 solved C CRED 18 solved F Flipkart 17 solved M Meta 17 solved W Walmart 16 solved U Uber 15 solved A Atlassian 14 solved I Infosys 13 solved

Certifications

Competitive Programming Champion

Earned Oct 10, 2026 · Verify ↗

Dynamic Programming Expert

Earned Aug 4, 2026 · Verify ↗

Arrays & Hashing Foundations

Earned Jul 23, 2026 · Verify ↗

Graph Navigator

Earned Jul 20, 2026 · Verify ↗

Graph Algorithms Expert

Earned Jul 20, 2026 · Verify ↗

Data Structures & Algorithms Specialist

Earned Jun 25, 2026 · Verify ↗

Contest history

All contests →

CompileMate Monthly Challenge: November 2026

Nov 1, 2026

–

0 pts

CompileMate Weekly Contest 8

Sep 27, 2026

#3

1000 pts

CompileMate Weekly Contest 7

Sep 20, 2026

#7

1000 pts

CompileMate Weekly Contest 6

Sep 13, 2026

#4

1000 pts

CompileMate Monthly Challenge: September 2026

Sep 12, 2026

#1

1000 pts

CompileMate Weekly Contest 5

Sep 6, 2026

#9

1000 pts