Three Solved Problems

by **BIT0112-Rokon** Mon Dec 14, 2009 6:13 am

1. Write a program that will reverse a string .String Reverse

Code:: import java.util.Scanner; public class StringReverse { static Scanner scr = new Scanner(System.in); public static String Reverse(String t) { String string = ""; for (int i = t.length() - 1; i >= 0; i--) { string += t.charAt(i); } return string; } public static void main(String[] args) { System.out.println("Enter your String: "); String str = scr.next(); System.out.println("Your Reverse String is: " + Reverse(str)); } }

2. Write Program that will print the Fibonacci series.

Code:: import java.util.Scanner; public class Fibonacci { static Scanner scr = new Scanner(System.in); static int num; public static int fib(int n) { if (n < 2) return n; else return fib(n - 1) + fib(n - 2); } public static void main(String[] args) { System.out.println("koto projonta chao...?"); num = scr.nextInt(); for (int i = 1; i <= num; i++) System.out.print(fib(i) + ", "); } }

3. Write a program that will print factorial of number.

Code:: import java.util.Scanner; public class Factorial { static Scanner scr = new Scanner(System.in); public static long factorial(int n) { if (n <= 1) return 1; else return (n * factorial(n - 1)); } public static void main(String[] args) { int num; System.out.print("enter your number..?"); num = scr.nextInt(); System.out.print("your factorial: " + factorial(num)); } }

Best of luck...

by **BIT0122-Amit** Mon Dec 14, 2009 5:18 pm

you should've posted this the day before exam mate Razz

Re: Three Solved Problems