PROBLEMS/GREEDY
Greedy LeetCode Problems
319 hand-tagged Greedy problems across 5 interview patterns (Sorting-Based Greedy, Reachability / Frontier Greedy, Exchange Argument / Local Adjustment, Counter / Balance Greedy, General Greedy (Greedy is main insight)), ranked by importance (how often each pattern shows up in real coding interviews). Work top-down within each pattern.
| # | PROBLEM | DIFF | ELO | IMP | PATTERNS |
|---|---|---|---|---|---|
| 1 | Two City Scheduling | Easy | 1348 | 78 | Sorting + Comparison |
| 2 | Hand of Straights | Medium | 1565 | 76 | Frequency Counting / Hash Map Lookup · Sorting + Comparison |
| 3 | Put Marbles in Bags | Hard | 2042 | 68 | Sorting + Comparison · Prefix Sums |
| 4 | Largest Number | Medium | 1538 | 62 | Sorting + Comparison |
| 5 | Queue Reconstruction by Height | Medium | 1658 | 62 | Sorting + Comparison |
| # | PROBLEM | DIFF | ELO | IMP | PATTERNS |
|---|---|---|---|---|---|
| 1 | Jump Game | Easy | 1307 | 86 | Linear Recurrence DP |
| 2 | Jump Game II | Medium | 1432 | 86 | Linear Recurrence DP |
| 3 | Gas Station | Medium | 1576 | 82 | Prefix Sums |
| 4 | Eliminate Maximum Number of Monsters | Medium | 1528 | 72 | Sorting + Comparison |
| 5 | Minimum Number of Coins to be Added | Medium | 1784 | 72 | Sorting + Comparison · Prefix Sums |
| # | PROBLEM | DIFF | ELO | IMP | PATTERNS |
|---|---|---|---|---|---|
| 1 | Candy | Medium | 1700 | 78 | |
| 2 | Minimize Maximum Pair Sum in Array | Easy | 1301 | 62 | Sorting + Comparison · Opposite-Direction (Converging) |
| 3 | Minimum Deletions to Make Character Frequencies Unique | Medium | 1510 | 62 | Frequency Counting / Hash Map Lookup · Sorting + Comparison |
| 4 | Minimum Time to Make Rope Colorful | Medium | 1574 | 62 | Same-Direction (Fast/Slow on Arrays) |
| 5 | Minimum Increment to Make Array Unique | Medium | 1448 | 58 | Sorting + Comparison |
| # | PROBLEM | DIFF | ELO | IMP | PATTERNS |
|---|---|---|---|---|---|
| 1 | Valid Parenthesis String | Medium | 1530 | 78 | Stack-Based Simulation · Linear Recurrence DP |
| 2 | Minimum Number of Swaps to Make the String Balanced | Medium | 1689 | 63 | Stack-Based Simulation |
| 3 | Check if a Parentheses String Can Be Valid | Hard | 2038 | 62 | Stack-Based Simulation · Frequency Counting / Hash Map Lookup |
| 4 | Optimal Partition of String | Easy | 1355 | 61 | Frequency Counting / Hash Map Lookup · Variable-Size Window (Expand/Contract) |
| 5 | Dota2 Senate | Medium | 1639 | 58 | Stack-Based Simulation |
| # | PROBLEM | DIFF | ELO | IMP | PATTERNS |
|---|---|---|---|---|---|
| 1 | Best Time to Buy and Sell Stock II | Easy | 1197 | 82 | Linear Recurrence DP |
| 2 | Lemonade Change | Easy | 1286 | 72 | Frequency Counting / Hash Map Lookup |
| 3 | Increasing Triplet Subsequence | Easy | 1377 | 68 | Longest Increasing Subsequence |
| 4 | Merge Triplets to Form Target Triplet | Medium | 1636 | 68 | |
| 5 | Find the CelebrityPREMIUM | Easy | 1347 | 62 | DFS Connected Components · Frequency Counting / Hash Map Lookup |
EVERY PATTERN
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