Question

已知abcd为四位整数,且a+b=c*d,求满足条件的整数的总和.求过程

Answer 1

遍历法、穷举法、枚举法

S=0

FOR A=0 TO 9

FOR B=0 TO 9

FOR C=0 TO 9

FOR D=0 TO 9

IF A+B=C*D THEN

S=S+A*1000+B*100+C*10+D

END IF

NEXT D

NEXT C

NEXT B

NEXT A

PRINT S

END