How to find a single words in a String ?

Question

Like as
Input :- rarad
Output :- d

Input raraddmk
Output mk

Answer 1

you can make a loop for each letter index in input, and inside it another loop for iterating over each letter of input(except index of character outer loop) if same character found then break; else when reach last index in inner loop just print that character

Answer 2

1. Turn the string into an array.
2. Iterate through the character array and find the characters you need.
3. If it's a single character (like your 1st example), print them directly. Concat multiple characters (like your 2nd example) using +""+ when printing.