作者:井然洞中别样天 | 来源:互联网 | 2023-06-21 13:53
1.双和数组的概念:将一个偶数2S分解成六个互不相等的正整数a,b,c,d,e,f,这六个正整数满足三个条件:1.a+b+cd+e+f2.1a+1b+1c1d+1e+1
1.双和数组的概念:将一个偶数2S分解成六个互不相等的正整数a,b,c,d,e,f,这六个正整数满足三个条件:
1.a+b+c = d+e+f
2.1/a+1/b+1/c=1/d+1/e+1/f
3.a
public class test{
public static void main(String[] args){
test t = new test();
System.out.print("please input n:");
Scanner in = new Scanner(System.in);
int n = in.nextInt();
t.fun(n);
}
public void fun(int n){
int a,b,c,d,e,f;
for(a=1; a<=(n-3)/3; a++){
for(b=a+1; b<=(n-a-1)/2; b++){
for(d=a+1; d<=(n-3)/3; d++){
for(e=d+1; e<=(n-d-1)/2; e++){
c = n-a-b;
f = n-d-e;
if(d*e*f*(a*b+b*c+c*a) == a*b*c*(d*e+e*f+f*d)){
System.out.println("双和数组:" + "(" + a + "," + b + "," + c + "),(" + d + "," + e + "," + f + ")");
}
}
}
}
}
}
}