Popular JAVA Programming Interview Questions - Part 1

Prog_1. Write a program to check whether a number is prime or not?

Prog_2. Write a program to find Fibonacci series for a given range.

Prog_3. Write a program to check whether a given string is palindrome or not?

Prog_4. Write a program to check whether a number is Armstrong number?

Prog_5. Write a program to find duplicates in an array.

Prog_6. Write a program to find duplicate character in a string.

Prog_7. Write a program to check the number of times substring appeared in a string.

Prog_8. Write a program to print the below pattern:

1
12
123
1234
12345


Prog_9. Write a program to print the below pattern:

*
***
*****
*******
*********

Prog_10. Write a program to print Floyd’s triangle.

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