Question

JAVA编程找出四位整数abcd中满足（ab+cd）（ab+cd）=abcd的数

Answer 1

abcd不知道是a * b * c * d ，还是a * 1000+b *100+ c * 10+d。结构都一样，改下if条件就行
public static void main(String[] args) {
for (int a = 0;; a++) {
for (int b = 0;; b++) {
for (int c = 0;; c++) {
for (int d = 0;; d++) {
if ((a * b + c * d) * (a * b + c * d) == a * b * c * d) {
System.out.println(a + "," + b + "," + c + "," + d);
break;
}
}
}
}
}
}

Answer 2

FOR a=1 TO 9
   FOR b=0 TO 9
      FOR c=1 TO 9
         FOR d=0 TO 9
            LET e=(a*10+b+c*10+d)^2
            LET f=a*1000+b*100+c*10+d
            IF e=f THEN PRINT f
         NEXT d
      NEXT c
   NEXT b
NEXT a
END

2025
3025

追问

谢谢。