Java/src/main/java/com/examplehub/basics/DoWhileLoop.java at master · JavaCimcoz/Java · GitHub

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package com.examplehub.basics;

public class DoWhileLoop {
  public static void main(String[] args) {
    /*
     * do
     * {
     *    statement(s);
     * } while(condition);
     */

    /*
     * just run a time
     */
    /*
    int i = 1;
    do {
        System.out.print("just run a time");
    } while (i > 1);
    */

    /*
     * **********
     */
    int i = 1;
    do {
      System.out.print("*");
      i++;
    } while (i <= 10);
    System.out.println();

    /*
     * 1 2 3 4 5 6 7 8 9 10
     */
    i = 1;
    do {
      System.out.print(i + " ");
      i++;
    } while (i <= 10);
    System.out.println();

    /*
     * 2 4 6 8 10
     */
    i = 2;
    do {
      System.out.print(i + " ");
      i += 2;
    } while (i <= 10);
    System.out.println();

    /*
     * 10 9 8 7 6 5
     */
    i = 10;
    do {
      System.out.print(i + " ");
      i--;
    } while (i >= 5);
    System.out.println();

    /*
    do {
        infinite loop
    } while (true);
    */

    /*
     * 5! = 6
     */
    i = 1;
    int fact = 1;
    do {
      fact *= i;
      i++;
    } while (i <= 5);
    System.out.println("5! = " + fact);

    /*
     * numbers[0] + numbers[1] + ... + numbers[4] = 15
     */
    int[] numbers = {1, 2, 3, 4, 5};
    int sum = 0;
    i = 0;
    do {
      sum += numbers[i];
      i++;
    } while (i < numbers.length);
    System.out.println("numbers[0] + numbers[1] + ... + numbers[4] = " + sum);
  }
}