The 1316 is represented as a number of two, one of which is a multiple of 13, and the other is a multiple of 11, for which two numbers are called.
Source: Internet
Author: User
Algorithm Analysis:
1316, obviously 1300 is a multiple of 13, but 16 is not a multiple of 11, you can think of any minus n 13 multiples from 1300 and the result is still a multiple of 13, so as long as 16 plus this minus n 13 is a multiple of 11, the two numbers are solved, and the answer may be more than one. But we just want a couple of solutions.
Careful observation is not difficult to find: (16+13*3) + (1300-13*3) = 1316, but we need to use code to achieve:
Copy Code code as follows:
<?php
$n = 1316;
$i =0;//minus the nth 13, initialized to 0
$y =16+13* $i//1316 16 plus n 13, which is initialized to 16
while ($y%11!=0) {//if 16 plus n 13 and cannot divide 11
$i ++;//, add another 13.
$y =16+13* $i;
}
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