打印菱形

引言

之前面试，有一家公司需要打印菱形，说了下思路，人家要求写出来，比较紧张，没有写出来，现在将完整代码补上。

import java.util.Scanner;

public class Test {

    private static Scanner sc;

    public static void main(String[] args) {
        System.out.println("请输入一个奇数");
        sc = new Scanner(System.in);
        String s = sc.nextLine();
        int number;
        try {
            number = Integer.parseInt(s);
        } catch (NumberFormatException e) {
            System.out.println("请输入一行数字");
            return;
        }
        if (number % 2 == 0) {
            System.out.println("请输入奇数");
            return;
        }
        print(number);
    }

    private static void print(int number) {
        int i, j;
        for (i = 1; i <= (number + 1) / 2; i++) {
            for (j = 1; j <= (number + 1) / 2 - i; j++) {
                System.out.print(" ");
            }
            for (int m = 1; m <= 2 * i - 1; m++)

            {
                System.out.print("*");
            }
            System.out.print("\n");
        }
        for (i = 1; i <= (number - 1) / 2; i++) {
            for (int m = 1; m <= i; m++) {
                System.out.print(" ");
            }
            for (int a = 1; a <= number - 2 * i; a++)

            {
                System.out.print("*");
            }
            System.out.print("\n");
        }
    }
}