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Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

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Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

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From beginner to job-ready. Explore our curated career paths designed to help you succeed in the tech industry.

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Programming and DSA

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Programming and DSA

Learn to think like a programmer. Develop your problem-solving skills with essential data structures and algorithms.

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zirutok

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Rating Graph

No. of Contests Participated: 38
1835 (+4)RatingProvisional
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Starters 215 (Rated)(2025-12-03 22:00:02)
Global Rank:   535
Cheated in:   

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Learning Paths (4)

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Machine Learning

Completed

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Java Problem Solving

19%
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Learn JavaScript

30%
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Learn Java (Older version)

22%

Practice Paths (5)

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Practice JavaScript

22%
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Practice C

38%
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Practice Python

30%
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Practice C++

39%
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Practice Java

38%

Contests (38)

Starters 172 (Rated)

Transform String, Time Machine, Small Palindrome, Streak Star

Starters 173 (Rated upto < 2700)

Cool Subsequences, Time Penalty

Starters 174 (Rated)

Mystic Slimes, Too Much Homework!, Bigger is Better, Deletion and Difference

Starters 175 (Rated)

Alternate It!, Make same

Starters 176 (Rated)

Same And, Friendly Binary Strings, Clothing Store, Costly Summit

Starters 177 (Rated)

Flip or Reverse, Ordered Distances, Triangle Checking, 2 Boxes

Starters 178 (Rated)

Big Difference, Minimum Colours (Easy), Placing 01 And 10

Starters 179 (Rated)

Lost in the Fest!!, Station Allocation, Unlock The Safe, Can you reach

Starters 180 (Rated)

Shall we play a game

Starters 181 (Rated)

The Best Matrix, Flip Prefix, Find Outside Array

Starters 182 (Rated)

Bar Queue, MasterChef, Beautiful Garden, Palindromic Score

Starters 183 (Rated)

S to T, Larger Smaller, Max Sixers, Max Triangle

Starters 184 (Rated)

One Down

Starters 185 (Rated)

GCD Summation, Creature Hunter

Starters 187 (Rated)

OR What, Exercise and Rest, Chococut, Incremental Game, Distinct Representations

Starters 188 (Rated)

K Boxes, Yet Another Monsters Problem, Red and Blue Gems, Subset Sum 3, Train Even or Odd

Starters 189 (Rated)

Nutrition Cost, Create Binary String

Starters 190 (Rated)

Subsequence Sort, Maximum Slams, Number Reduction, Light All, Parry It! (Easy)

Starters 191 (Rated)

Add 1 or 2, Grid Path (Easy), Add to get GCD, Permuted Greater than 2, Divide into 3, Nearest Square

Starters 192 (Rated)

Security Lines, No 3 Please!

Starters 193 (Rated)

Add Permutation, Check Odd Even Divisors, Count Odd Even Divisors

Starters 194 (Rated)

Mark All, Munchys Modulo, Chef Bakes Cake 3

Starters 195 (Rated)

String Deletions, Marble Collector

Weekend Dev Challenge 07: React Projects

Weather App - 1, Weather App - 2, FLAPPY BIRD -1 , FLAPPY BIRD - 2, FLAPPY BIRD - 3

Starters 196 (Rated)

Beauty in Everything, Sugar Limit, Append Average

Weekend Dev Challenge 08: React Projects

Tab Switch, Live crypto update, Improve your aim, Switch the theme, Fix the render

Weekend Dev Challenge 09: ML Projects

Data Exploration and Analysis - Loan Approval, Preprocessing Dataset - Loan Approval, Train Logistic Regression Model - Loan Approval, Bangalore House Price Prediction Project, Clean the Bangalore House Price Dataset, Build the Complete House Price Prediction Web App

Starters 198 (Rated)

Currency Exchange

Starters 199 (Rated)

Perfect Ranges, Fence Colouring, Grid MEX, Subtract or Divide

Weekend Dev Challenge 10: ML Projects

Calculate F-Score for Evaluating Binary Classifier

Starters 200 (Rated)

Random NIM, Restrict Palindromes, Good Subsequence

Weekend Dev Challenge 12: ML Projects

Clustering & Dimensionality Reduction, K-Means Clustering and Evaluation, PCA for Dimensionality Reduction + Classification, Movie Review Sentiment Analyzer, Clean IMDB Movie Review Dataset, Building and Saving the Sentiment Model

Starters 202 (Rated)

Buying Flowers, If Only I Could Read, Min-Max Deque (Easy)

Weekend Dev Challenge 13: ML Projects

Classification Algorithms on the Iris Dataset, Classification Algorithms on the Iris Dataset, Classification Algorithms on the Iris Dataset

Monday Munch - DSA Challenge

Diameter of the tree, Search an element in an array, ZigZag Traversal, Merge two sorted arrays, Check Palindrome, Maximum Sum of K Elements

Starters 203 (Rated)

MEX on Ranges, Maximum MST, Cab Rides

Starters 206 (Rated)

Cyclic Shift Minimization, Gladiator Fighting, Prime Sum

Starters 207 (Rated)

Make Subarray

Starters 208 (Rated)

GCND, Sabotage, Alternate Jumps, Cycle and Add

Weekend Dev Challenge 15: Classify images using Deep Learning

Handwritten Digit Recognition Project, Data Preprocessing and Feature Scaling, Building and Saving the Neural Network Model

Monday Munch - DSA Challenge 03

Count Subarrays, Rooks, Find maximum in an Array, Segmentation Fault, Insertion and deletion together in a Heap, Find Course Schedule

Monday Munch - DSA Challenge 04

Apples and oranges, Least significant bit, and most significant bit, Mirror Tree, Galactic Network, Check if the array is sorted, Find Remainder

Monday Munch - DSA Challenge 05

Count palindromes, Maximum Score, Largest Common Element in Two Arrays, Count subarrays with given sum, Merge Overlapping intervals, Vowels or Not

Weekend Dev Challenge 17: GenAI Projects using LLM

Resume Reviewer Project

Monday Munch - DSA Challenge 06

Flatten a Linked List, Count loop length in Linked List, Kth Largest Node in BST, Length of Longest Palindrome, Single number in multiple numbers, What is your grade

Weekend Dev Challenge 18: Full Stack Projects using MERN

Typing Speed Test Project, Adding Accuracy Measurement and Enhanced Feedback, Emoji Translator Project, Part 2 - Writing a Backend API for Emoji Mapping

Weekend Dev Challenge 19: Full Stack Projects using MERN

URL Shortener Project, Enhancing the React UI to Use Backend APIs, Social Media Feature Expansion Project

Monday Munch - DSA Challenge 07

Take discount or Not, Binary Substituition, Expensive Steps , Spiral Matrix Traversal, Kth missing positive, Is that a century

Weekend Dev Challenge 20: Full Stack Projects using MERN

Fitness App Project

Monday Munch - DSA Challenge 08

K-Flip, MIN To MAX, Set Matrix Zeroes, Longest Consecutive Numbers in an Array, Odd or even

Starters 209 (Rated)

Binary Love, Tactical Conversion, Small GCD Sort, High Score (Easy Version)

Starters 210 (Rated)

Delete Sorted Subsequence, Chocolate Eating, First Element Counting

Starters 211 (Rated)

Subarray Maximums, Buying Chairs, No Doubling, Wolf Down

Weekend Dev Challenge 21: Full Stack Projects using MERN

CodeChef Profile Scraper Project, Part 2 - Connect the React UI with the Backend API, Part 3 - Build the Express Scraping Endpoint, Storing and Retrieving Profiles with MongoDB, Social Media Feature Expansion 2 Project

Monday Munch - DSA Challenge 09

AND Plus OR, Get all ancestors, Print Pattern, Search Word, Largest Subarray with Sum 0, Is the number divisible by 5

Weekend Dev Challenge 22: Frontend Essentials - HTML,CSS,JS

Hamburger Menu Challenge, Scroll Progress Tracker Challenge

Monday Munch - DSA Challenge 10

Odd Sum Pair, Divide Pages, Triplets Min, Good subarrays, How much you lack

Weekend Dev Challenge 23: Frontend Essentials - HTML,CSS,JS

Sticky Header Challenge, Flip Card Challenge, TypeWriter Effect Challenge

Monday Munch - DSA Challenge 11

Largest and Second Largest, Special Substring, Zero Sum Triplets, Count Inversions, Maximum Unique Segment, What is the square

Starters 212 (Rated)

Exit Door, Distinct Fun, Binary Flip

Starters 213 (Rated)

Mean Difference (Easy), Chef and String, Separation, No 4 Please

Starters 214 (Unrated)

Crazy Permutations, Zero Permutation Score

Monday Munch - DSA Challenge 12

Intersecting arrays, Color Sorting Challenge, Covering, Make 2 digits, Chef and String, Hail XOR

Starters 215 (Rated)

Intersecting Intervals (Easy), Product Sum Arrays (Easy), Differing Values, Special Missions

Weekend Dev Challenge 25: Frontend Essentials - HTML,CSS,JS

Light-Dark Theme Toggle Challenge, Character Counter & Text Formatter Project, Part 2 -Character Counter & Text Formatter Project, Multi-Step Form Project, Part 2 - Multi-Step Form Project

Monday Munch - DSA Challenge 13

Count of Maximum, Cost of Groceries, All Possible Subsets, Generate All Possible Pairs of Balanced Parenthese, Less than 10

Monday Munch - DSA Challenge 14

Reverse the Segment, Chef and Nested Parentheses, Delete All Occurrences of a Key in a Doubly Linked, Complete the resolution, DNA Storage, Largest Y

Weekend Dev Challenge 26: Frontend Essentials - HTML,CSS,JS

Memory Match Game Project, Part 2 - Memory Match Game Project, ToastyWeather Project, Part 2 - ToastyWeather Project, Bookmark Organizer Project, Part 2 - Bookmark Organizer Project

Total Problems Solved: 1464

1835
(Div 2)
★★★★
CodeChef Rating (Highest Rating 1835)
  • 4340 Global Rank
  • 8 Country Rank

Skill tests

100%

Java Skill test

Attempted on April 2025
100%

C++ Skill test

Attempted on April 2025
96%

Data structures and Algorithms in Java test

Attempted on October 2025
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Badges

Problem Solver - Diamond Badge

Problem Solver - Diamond Badge

Received for solving 1000 Problems

Daily Streak - Diamond Badge

Daily Streak - Diamond Badge

Received for maintaining a streak of 100 days

Code Enthusiast - Bronze Badge

Code Enthusiast - Bronze Badge

Received for explaining 10 Solutions

Total likes: 1    Total dislikes: 0

Contest Contender - Silver Badge

Contest Contender - Silver Badge

Received for participating in 25 Contests

Certificates

Machine Learning

Issued October 2025

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