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Java Programs second set

Author: hari1690

javaPrograms/src/javaPrograms/addTwoIntegers.java

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+package javaPrograms;
+
+import java.util.Scanner;
+
+public class addTwoIntegers {
+
+	// add two integers entered by the user
+
+	public static void main(String[] args) {
+
+		Scanner reader = new Scanner(System.in);
+		System.out.println("Please enter two numbers");
+		System.out.println("Please enter the first number");
+		int input = reader.nextInt();
+		System.out.println("Please enter the next number");
+		int inputtwo = reader.nextInt();
+		int output = input+inputtwo;
+		System.out.println("Result after adding given two numbers is "+output);
+
+	}
+}

javaPrograms/src/javaPrograms/armstrongNumber.java

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+package javaPrograms;
+
+public class armstrongNumber {
+
+	public static void main(String[] args) {
+		// Armstrong number
+		// 153 ==> 1*1*1 + 5*5*5 + 3*3*3 = 153
+		
+		int num =371;
+		double result = 0;
+		
+		int actualNum =num;
+		
+		while(num != 0) {
+			
+			int n = num% 10;
+			result = result + Math.pow(n, 3);
+			num = num/10;
+		}
+		
+		if(result == actualNum) {
+			System.out.println("Armstrong Number it is!");
+		}else {
+			System.out.println("Not an armstrong number");
+		}
+
+	}
+
+}

javaPrograms/src/javaPrograms/armstrongNumberBetweenIntervals.java

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+package javaPrograms;
+
+public class armstrongNumberBetweenIntervals {
+
+	public static void main(String[] args) {
+		// Armstrong number between two numbers
+		
+		int low = 101;
+		int high = 400;
+		
+		for (int i = low; i<high; i++){
+	         int check, rem, sum = 0;
+	         check = i;
+	         while(check != 0) {
+	            rem = check % 10;
+	            sum = sum + (rem * rem * rem);
+	            check = check / 10;
+	         }
+	         if(sum == i){
+	            System.out.println(""+i+" is an Armstrong number.");
+	         }
+	      }
+	   }
+	
+
+}

javaPrograms/src/javaPrograms/checkAlplhabetOrNot.java

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+package javaPrograms;
+
+public class checkAlplhabetOrNot {
+
+	public static void main(String[] args) {
+		// Check alphabet
+		
+		char c='F';
+		if(c>='a'&& c<='z') {
+			System.out.println("It is an alphabet");
+		}else if(c>='A'&& c<='Z'){
+			System.out.println("It is an alphabet");
+		}
+		else {
+			System.out.println("Not an alphabet");
+		}
+				
+
+	}
+
+}

javaPrograms/src/javaPrograms/checkLeapYear.java

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+package javaPrograms;
+
+public class checkLeapYear {
+
+	public static void main(String[] args) {
+		// check leap year
+		
+		//divisible by 4 for all the century years ending with 00
+		//century is a leap year when it is divisble by 400
+		//1900 is not a leap year
+		//2012 is a leap year
+		
+		int year = 2012;
+		boolean leap=false;
+		
+		if(year %4 == 0) {
+			if (year%100==0) {
+				if(year%400==0) {
+					leap=true;
+				}
+				else {
+					leap = false;
+				}
+			}else {
+				leap =true;
+			}
+					
+		}
+		else {
+			leap =false;
+		}
+		
+		if(leap) {
+			System.out.println(year +" is a leap year");
+		}else {
+			System.out.println(year+" is not a leap year");
+		}
+		
+
+	}
+
+}

javaPrograms/src/javaPrograms/computeQuotientRemainder.java

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+package javaPrograms;
+
+public class computeQuotientRemainder {
+
+	public static void main(String[] args) {
+		// compute Quotient and Remainder
+		
+		int a =20;
+		int b=10;
+		
+		int quotient = a/b;
+		System.out.println("Quotient is "+ quotient);
+		
+		int remainder =a%b;
+		
+		System.out.println("Remainder is "+remainder);
+		
+
+	}
+
+}

javaPrograms/src/javaPrograms/countNumberOfDigitsInteger.java

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+package javaPrograms;
+
+public class countNumberOfDigitsInteger {
+
+	public static void main(String[] args) {
+		// count the number of digits in an integer
+		
+		int num = 1234567;
+		String number = Integer.toString(num);
+		
+		int numberOfDigits = number.length();
+		System.out.println("Number of the digits in the given number is "+numberOfDigits);
+
+	}
+
+}

javaPrograms/src/javaPrograms/displayCharactersFromAtoZ.java

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+package javaPrograms;
+
+public class displayCharactersFromAtoZ {
+
+	public static void main(String[] args) {
+		// display characters from a to z
+		
+	/*	for(int i =0;i<=10;i++) {
+			System.out.println(i);
+		}
+	*/
+		
+		for(char ch='a';ch<='z';ch++) {
+			System.out.print(ch + " ");
+			
+		}
+
+	}
+
+}

javaPrograms/src/javaPrograms/factorial.java

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+package javaPrograms;
+
+public class factorial {
+
+	public static void main(String[] args) {
+		// factorial n*n-1
+
+		factorialLogic(10);
+
+		
+
+	}
+
+	public static void factorialLogic(int num) {
+
+		int factorial = 1;
+
+		for (int i = 1; i <= num; i++) {
+			factorial = factorial * i;
+			System.out.println(factorial);
+		}
+
+		System.out.println("Final number " + factorial);
+	}
+
+}

javaPrograms/src/javaPrograms/factorialUsingRecursion.java

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+package javaPrograms;
+
+public class factorialUsingRecursion {
+
+	public static void main(String[] args) {
+		// 
+
+		System.out.println(factorial(5));
+		
+	}
+	
+	public static double factorial(double num) {
+		if(num>=1) {
+			return num*factorial(num-1);
+		}
+		else {
+			return 1;
+		}
+	}
+
+}