Created
October 8, 2010 15:40
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| /** | |
| * | |
| * @author Manjula | |
| */ | |
| public class DigitSum { | |
| /** | |
| * Calculate digit sum of a given integer | |
| * e.g: if given number is 237, then its digit sum = (2+3+7) = 12 | |
| * @param number | |
| * @return digit sum of given integer <code>number</code> | |
| */ | |
| public static int calculateDigitSum(int number) { | |
| int digitSum = 0; | |
| while (number > 0) { | |
| digitSum = digitSum + (number % 10); | |
| number = number / 10; | |
| } | |
| return digitSum; | |
| } | |
| /** | |
| * Reverse the given integer <code>number</code> | |
| * e.g: input = 1234, output = 4321 | |
| * @param number | |
| * @return reversed integer | |
| */ | |
| public static int reverseInteger(int number) { | |
| int reversedNumber = 0; | |
| while (number > 0) { | |
| int temp = (number % 10); | |
| reversedNumber = (reversedNumber * 10) + temp; | |
| number = number / 10; | |
| } | |
| return reversedNumber; | |
| } | |
| public static void main(String[] args) { | |
| int number = 133254; | |
| int digitSum = calculateDigitSum(number); | |
| int reverseNum = reverseInteger(number); | |
| System.out.println(" Number = " + number + "\n Digit Sum of Number = " + digitSum); | |
| System.out.println(" reverseNum = " + reverseNum ); | |
| } | |
| } |
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good