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- import java.util.Arrays;
- public class Test3Digit {
- //return the biggest 3 digit number made out of d1,d2 and d3.
- public int threeDigit(int d1, int d2, int d3) {
- int number = 0;
- int[] digitArray = {d1, d2, d3};
- Arrays.sort(digitArray); // sort ascending
- for (int i=2; i>=0; i--)
- number += Math.pow(10, i) * digitArray[i];
- return number;
- } // threeDigit
- public static void main(String[] args) {
- Test3Digit t = new Test3Digit();
- // test data
- int d1 = 3; // single digit
- int d2 = 2; // single digit
- int d3 = 9; // single digit
- System.out.println (t.threeDigit(d1, d2, d3));
- } // main()
- } // class Test3Digit
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