Exchange Argument / Local Adjustment Problems
14 Exchange Argument / Local Adjustment problems on LeetCode, a Greedy interview pattern, ranked by importance (how often it comes up in real interviews). Difficulty (ELO) and importance shown per problem.
| # | 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 |
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