Java Coding Problems

Problems

Use the following problems to test your string manipulation and mathematical corner case programming prowess. I strongly encourage you to give each problem a try before you turn to the solutions and download the example programs:

1. Counting duplicate characters: Write a program that counts duplicate characters from a given string.
2. Finding the first non-repeated character: Write a program that returns the first non-repeated character from a given string.
3. Reversing letters and words: Write a program that reverses the letters of each word and a program that reverses the letters of each word and the words themselves.
4. Checking whether a string contains only digits: Write a program that checks whether the given string contains only digits. ...