See the examples in the text.
1. (Initializing arrays with input values)
2. (Initializing arrays with random values)
3. (Printing arrays)
4. (Summing all elements)
5. (Finding the largest element)
Problem: Counting Occurrence of Each Letter
Generate 100 lowercase letters randomly and assign to an array of characters.
Count the occurrence of each letter in the array.
See the examples in the text.
1. (Initializing arrays with input values)
2. (Printing arrays)
3. (Summing all elements)
4. (Summing all elements by column)
5. (Which row has the largest sum)
