Problem Solving 📝 Simple Problems Odd Even Number. Prime Composite Number. Vowel Consonant Check. Calculate Factorial. Reverse String. Fibonacci Sequence. Celsius to Fahrenheit. Find Average/Mean. Find GCD. Find LCM. Find Median. Find Mode. Array Problems 🕳️ Find the minimum and maximum elements of an array. Reverse an array. Find the Kth smallest/largest element in an unsorted array. Find the missing number from the array. Find peak element, not smaller than neighbors.