String Coding Interview Questions

Here is my list of frequently asked string coding questions from programming job interviews: 

• How do you print duplicate characters from a string?  
• How do you check if two strings are anagrams of each other?  
• How do you print the first non-repeated character from a string?  
• How can a given string be reversed using recursion?  
• How do you check if a string contains only digits?  
• How are duplicate characters found in a string?  
• How do you count the number of vowels and consonants in a given string?  

Here are some of the most common and popular linked list interview questions and their solutions: 

• How do you find the middle element of a singly linked list in one pass?  
• How do you check if a given linked list contains a cycle? How do you find the starting nod...