| # | Problem | Difficulty | Topics |
|---|---|---|---|
| 61 | Array Intersection | Easy | ArraysArraySearch |
| 62 | Segregate Negatives and Positives | Easy | ArraysArrayIn-place |
| 63 | Array Equilibrium Index | Easy | ArraysArrayPrefix Sum |
| 64 | Pair Sum Finder | Easy | ArraysArrayNested Loop |
| 65 | Peak Element Finder | Easy | ArraysArrayLogic |
| 66 | GCD and LCM Calculator | Easy | FunctionsFunctionsMath |
| 67 | Narcissistic Number Checker | Easy | FunctionsFunctionsMath |
| 68 | Prime Factorization | Easy | FunctionsFunctionsLoop |
| 69 | nCr and nPr Calculator | Easy | FunctionsFunctionsFactorial |
| 70 | Number to Words | Easy | FunctionsFunctionsConditions |
| 71 | Digital Root | Easy | FunctionsFunctionsRecursion |
| 72 | Validate Date Function | Easy | FunctionsFunctionsLogic |
| 73 | Distance Calculator | Easy | FunctionsFunctionsMath |
| 74 | Metric Converter Library | Easy | FunctionsFunctionsMap |
| 75 | Base Converter | Easy | FunctionsFunctionsMath |
| 76 | Recursive Sum of Array | Easy | FunctionsFunctionsRecursion |
| 77 | Higher-Order Function Demo | Easy | FunctionsFunctionsCallbacks |
| 78 | Memoized Function | Easy | FunctionsFunctionsCaching |
| 79 | Currying Demo | Easy | FunctionsFunctionsClosures |
| 80 | Pipeline Processor | Easy | FunctionsFunctionsHigher-Order |