DSA Platform Comparison: 10×10 Analysis Grid
| # | Platform | Best For | Difficulty Level | Problem Count | Time per Problem | Interview Relevance | Logic Building | Beginner Friendly | Paid Features | Key Weakness |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | LeetCode | Interview patterns | Medium-Hard | 2,500+ | 20-40 min | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐ | Premium ($159/yr) | Expensive subscription |
| 2 | LeetCode | Company tags | Hard | 600+ (premium) | 30-45 min | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐ | Company filters | Needs premium for tags |
| 3 | LeetCode | Weekly contests | Hard | 4 new/week | 90 min contest | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐ | Contest ranking | Competitive pressure |
| 4 | LeetCode | Discuss solutions | Medium | All problems | 10-15 min | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ | Editorial access | Spoils thinking process |
| 5 | LeetCode | Study plans | Medium | 150-200 | 2-4 weeks | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ | Structured paths | Limited free plans |
| 6 | LeetCode | Database (SQL) | Easy-Medium | 300+ | 15-20 min | ⭐⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | SQL execution | Not for DSA core |
| 7 | LeetCode | Shell scripting | Easy | 50+ | 10-15 min | ⭐⭐ | ⭐ | ⭐⭐⭐⭐ | Terminal practice | Very niche |
| 8 | LeetCode | Mock interviews | Hard | Random | 60-90 min | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐ | Time pressure | Anxiety inducing |
| 9 | LeetCode | Playground | Easy | N/A | 5-10 min | ⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐⭐ | Quick testing | Basic features only |
| 10 | LeetCode | Solution videos | Medium | 500+ | 15-20 min | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐ | Video explanations | YouTube has free |
| 11 | GFG | Theory articles | Easy-Medium | 3,000+ | 20-30 min | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Free content | Ads, cluttered UI |
| 12 | GFG | SDE sheets | Medium | 400-500 | 2-3 months | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ | Curated lists | Not updated frequently |
| 13 | GFG | POTD (Problem of Day) | Medium | 365/year | 30-45 min | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ | Daily consistency | Quality varies |
| 14 | GFG | Company specific | Hard | 200+ | 40-60 min | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐ | Placement focus | Outdated sometimes |
| 15 | GFG | Topic wise | Beginner | 1,500+ | 15-30 min | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Structured learning | Missing edge cases |
| 16 | GFG | Algorithms library | All levels | 500+ | 20 min read | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | Reference material | No active coding |
| 17 | GFG | Interview experiences | Medium | 1,000+ | 10 min read | ⭐⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | Real insights | Not verified |
| 18 | GFG | Coding contests | Hard | 8-10/month | 120 min | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐ | Competition | Small prize pool |
| 19 | GFG | Language specific | Beginner | 500+ | 15-20 min | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Syntax practice | Too basic |
| 20 | GFG | Placement preparation | Medium | 200+ | 1-2 months | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ | Indian placements | Outdated syllabus |
| 21 | Codeforces | Logic building | Hard | 8,000+ | 45-90 min | ⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Rating system | Steep learning curve |
| 22 | Codeforces | Real-time contests | Hard | 4-5/month | 120-180 min | ⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Global ranking | Time zone issues |
| 23 | Codeforces | Problem ratings | Hard | 800-3500 | Varies | ⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Difficulty filter | No interview focus |
| 24 | Codeforces | Math heavy | Very Hard | 2,000+ | 60-120 min | ⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Combinatorics | Overkill for interviews |
| 25 | Codeforces | GYM feature | Hard | 500+ | 180 min | ⭐⭐ | ⭐⭐⭐⭐ | ⭐ | Past contests | No explanations |
| 26 | Codeforces | EDU section | Medium | 200+ | 30-60 min | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐ | Structured courses | Limited topics |
| 27 | Codeforces | Hack system | Hard | Live only | 10 min | ⭐ | ⭐⭐⭐⭐ | ⭐ | Bug finding | Not for beginners |
| 28 | Codeforces | Rating climb | Hard | 8,000+ | 6-12 months | ⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Motivation | Addictive/time sink |
| 29 | Codeforces | Problem sets | Hard | By rating | 45 min avg | ⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Filter by rating | No DSA focus |
| 30 | Codeforces | Div 4 rounds | Easy-Medium | 8-10/round | 120 min | ⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ | Beginner contests | Rarely held |
| 31 | HackerRank | Basics start | Beginner | 500+ | 10-15 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐⭐ | Warm-up | Too easy |
| 32 | HackerRank | 30 Days of Code | Beginner | 30 | 20-30 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐⭐ | Daily habit | Repetitive |
| 33 | HackerRank | Skill certification | Easy | 5-10 tests | 90 min | ⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | LinkedIn badge | Not recognized much |
| 34 | HackerRank | SQL domain | Easy | 150+ | 10-20 min | ⭐⭐⭐ | ⭐ | ⭐⭐⭐⭐ | Database practice | Limited advanced SQL |
| 35 | HackerRank | Problem solving | Easy-Medium | 200+ | 15-30 min | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Basic DSA | Shallow depth |
| 36 | HackerRank | Java/Python tracks | Beginner | 100+ | 10 min | ⭐ | ⭐ | ⭐⭐⭐⭐⭐ | Language syntax | Not DSA specific |
| 37 | HackerRank | Interview prep kit | Medium | 100+ | 30-45 min | ⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐ | Structured | Outdated questions |
| 38 | HackerRank | Contests | Easy-Medium | 2-3/month | 120 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐ | Practice | Low difficulty |
| 39 | HackerRank | APIs & Linux | Medium | 50+ | 20 min | ⭐⭐ | ⭐ | ⭐⭐⭐ | Niche skills | Not mainstream |
| 40 | HackerRank | Leaderboards | Easy | N/A | N/A | ⭐ | ⭐ | ⭐⭐⭐⭐ | Competition | Low competition |
| 41 | LeetCode | Array problems | Medium | 600+ | 20 min | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ | Tag filtering | Repetitive patterns |
| 42 | LeetCode | DP problems | Hard | 300+ | 45-60 min | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Pattern recognition | Very tough |
| 43 | LeetCode | Graph problems | Hard | 250+ | 35-50 min | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐ | BFS/DFS focus | Needs theory first |
| 44 | LeetCode | Tree problems | Medium | 400+ | 25-40 min | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ | Recursion practice | Similar patterns |
| 45 | LeetCode | String problems | Easy-Medium | 350+ | 20 min | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ | Palindrome/substring | Many brute force |
| 46 | LeetCode | HashMap problems | Easy | 200+ | 15 min | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ | Frequency counting | Too simple |
| 47 | LeetCode | Stack problems | Easy-Medium | 150+ | 20 min | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ | Parentheses/LIFO | Limited variety |
| 48 | LeetCode | Heap problems | Medium | 120+ | 25 min | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐ | Priority queue | Specific use cases |
| 49 | LeetCode | Binary Search | Easy-Medium | 180+ | 20 min | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | O(log n) thinking | Tricky boundaries |
| 50 | LeetCode | Backtracking | Hard | 100+ | 40-60 min | ⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐ | Permutations/subsets | Recursion heavy |
| 51 | GFG | Array GFG | Beginner | 500+ | 15 min | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Rotation/prefix sum | Basic only |
| 52 | GFG | Linked List GFG | Medium | 200+ | 20-30 min | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐⭐ | Node manipulation | Pointer confusion |
| 53 | GFG | Stack GFG | Easy | 150+ | 15 min | ⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Implementation | Too theoretical |
| 54 | GFG | Queue GFG | Easy | 100+ | 15 min | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Circular/Deque | Rare in interviews |
| 55 | GFG | Tree GFG | Medium | 300+ | 25 min | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐⭐ | Traversal methods | Repetitive |
| 56 | GFG | Graph GFG | Medium-Hard | 200+ | 35 min | ⭐⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐ | Adjacency matrix | Missing advanced |
| 57 | GFG | DP GFG | Hard | 250+ | 45 min | ⭐⭐ | ⭐⭐⭐⭐ | ⭐ | Memoization | Poor explanations |
| 58 | GFG | Greedy GFG | Medium | 120+ | 25 min | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐ | Activity selection | Proof missing |
| 59 | GFG | Searching GFG | Easy | 100+ | 10 min | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Linear/Binary | Too basic |
| 60 | GFG | Sorting GFG | Easy | 80+ | 15 min | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐⭐ | All algorithms | Theory heavy |
| 61 | Codeforces | Div 2 A/B | Medium | 2,000+ | 20-30 min | ⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐ | Implementation | Not for beginners |
| 62 | Codeforces | Div 2 C/D | Hard | 1,500+ | 45-60 min | ⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Algorithm design | Needs math |
| 63 | Codeforces | Div 2 E/F | Very Hard | 800+ | 90+ min | ⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Advanced DS | Expert level |
| 64 | Codeforces | Div 1 problems | Extreme | 500+ | 120+ min | ⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Olympiad level | Overkill |
| 65 | Codeforces | Constructive | Hard | 1,000+ | 40 min | ⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Pattern finding | No real world |
| 66 | Codeforces | Binary search CF | Medium | 500+ | 30 min | ⭐⭐ | ⭐⭐⭐⭐ | ⭐⭐ | Implementation | Tricky |
| 67 | Codeforces | Number theory | Hard | 600+ | 45 min | ⭐ | ⭐⭐⭐⭐⭐ | ⭐ | GCD/Primes | Math heavy |
| 68 | Codeforces | Combinatorics | Hard | 400+ | 50 min | ⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Permutations | Interview rare |
| 69 | Codeforces | Graph CF | Hard | 700+ | 60 min | ⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Shortest paths | Competitive focus |
| 70 | Codeforces | DP CF | Very Hard | 600+ | 70 min | ⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐ | Optimization | Overkill |
| 71 | HackerRank | Warm-up | Beginner | 20 | 5-10 min | ⭐ | ⭐ | ⭐⭐⭐⭐⭐ | Simple loops | Too easy |
| 72 | HackerRank | Arrays HR | Beginner | 30 | 10-15 min | ⭐ | ⭐⭐ | ⭐⭐⭐⭐⭐ | Reversal/rotation | Basic only |
| 73 | HackerRank | Dictionaries | Easy | 25 | 15 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | HashMap | Shallow |
| 74 | HackerRank | Sorting HR | Easy | 20 | 15 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | Bubble/merge | Basic only |
| 75 | HackerRank | String HR | Easy | 35 | 15 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | Palindrome/anagram | Limited |
| 76 | HackerRank | Search HR | Easy | 20 | 20 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | Binary search | Too simple |
| 77 | HackerRank | Graph HR | Medium | 15 | 30 min | ⭐⭐ | ⭐⭐ | ⭐⭐ | BFS/DFS | Very few |
| 78 | HackerRank | DP HR | Medium | 20 | 35 min | ⭐⭐ | ⭐⭐ | ⭐⭐ | Basic DP | Not enough |
| 79 | HackerRank | Stacks HR | Easy | 15 | 15 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | Balanced brackets | Repetitive |
| 80 | HackerRank | Queues HR | Easy | 12 | 15 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | Queue impl | Too basic |
| 81 | LeetCode | Premium benefits | Medium | 2,000+ | N/A | ⭐⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐ | Company lists | Costly |
| 82 | LeetCode | Speed running | Medium | 500+ | 15 min | ⭐⭐⭐⭐ | ⭐⭐⭐ | ⭐⭐ | Pattern recall | No depth |
| 83 | LeetCode | Revision mode | Easy | All | 5 min | ⭐⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | Quick recall | Not for learning |
| 84 | LeetCode | Playlist feature | Easy | N/A | N/A | ⭐⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | Organize problems | Limited utility |
| 85 | LeetCode | Notebook | Easy | N/A | N/A | ⭐⭐ | ⭐ | ⭐⭐⭐⭐ | Save code | Basic |
| 86 | LeetCode | Badges | Easy | N/A | N/A | ⭐ | ⭐ | ⭐⭐⭐⭐⭐ | Motivation | No skill gain |
| 87 | LeetCode | Calendar | Easy | N/A | N/A | ⭐⭐ | ⭐ | ⭐⭐⭐⭐ | Streak tracking | Pressure |
| 88 | LeetCode | Dark mode | Easy | N/A | N/A | ⭐ | ⭐ | ⭐⭐⭐⭐⭐ | Eye comfort | Not important |
| 89 | LeetCode | Mobile app | Easy | 500+ | 15 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | On-the-go | Limited features |
| 90 | LeetCode | API access | Hard | N/A | N/A | ⭐ | ⭐ | ⭐⭐ | Automation | Premium only |
| 91 | GFG | Offline reading | Easy | All | N/A | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ | No internet | Not interactive |
| 92 | GFG | Print friendly | Easy | All | N/A | ⭐ | ⭐⭐ | ⭐⭐⭐⭐ | Save as PDF | Poor formatting |
| 93 | GFG | Code editor | Medium | All | 15 min | ⭐⭐ | ⭐⭐⭐ | ⭐⭐⭐ | Run code | Slow sometimes |
| 94 | GFG | Discussion forum | Easy | All | 10 min | ⭐⭐ | ⭐⭐ | ⭐⭐⭐⭐ | Peer help | Spam |
| 95 | GFG | Bookmarks | Easy | N/A | N/A | ⭐⭐ | ⭐ | ⭐⭐⭐⭐⭐ | Save problems | Basic |
| 96 | GFG | Notes feature | Easy | N/A | N/A | ⭐ | ⭐ | ⭐⭐⭐⭐ | Personal notes | Clunky |
| 97 | Codeforces | Standings | Easy | Live | N/A | ⭐ | ⭐⭐⭐⭐ | ⭐⭐ | Competition | Distracting |
| 98 | Codeforces | Friends list | Easy | N/A | N/A | ⭐ | ⭐⭐⭐ | ⭐⭐⭐⭐ | Track peers | Social pressure |
| 99 | HackerRank | Work with us | Medium | N/A | N/A | ⭐⭐⭐ | ⭐ | ⭐⭐ | Job referrals | Rarely works |
| 100 | All platforms | Consistency > Platform | N/A | N/A | 100+ hours | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | ⭐⭐⭐⭐⭐ | Your discipline | No single platform |