计算 ()()()+()()()=()()()

public class Test {

    public static void main(String[] args) {

        test002();

    }

    /**

     * 测试二

     * 问题描述：()()()+()()()=()()()

     * 请将 1~9 这 9 个阿拉伯数字分别填入 9 个括号中使等式两边成立，每个数字只能使用一次

     */

    private static void test002(){

        int a,b,c,d,e,f,g,h,i;

        for ( int m=100;m<1000;m++ ){

            for ( int n=100;n<1000;n++ ){

                for ( int o=100;o<1000;o++ ){

                    if ( (m+n)==o ){

                        a = m/100;

                        b = (m%100)/10;

                        c = m-100*a-10*b;

                        d = n/100;

                        e = (n%100)/10;

                        f = n-100*d-10*e;

                        g = o/100;

                        h = (o%100)/10;

                        i = o-100*g-10*h;

                        int[] arr = {a,b,c,d,e,f,g,h,i};

                        boolean bol = checkArrRepeat(arr);

                        if ( !bol ){

                            System.out.println(m+","+n+","+o);

                        }

                    }

                }

            }

        }

    }

    /**

     * 判断数组是否重复

     *

     * @param arr 入参

     * @return 有重复返回 true，无重复返回 false

     */

    private static boolean checkArrRepeat( int[] arr ){

        for ( int i=0;i<arr.length;i++ ){

            for ( int j=i+1;j<arr.length;j++ ){

                if ( arr[i]==arr[j] ){

                    return true;

                }

            }

        }

        return false;

    }

}