编程概念：将一个数字拆分成其他整数的组是什么？

Question

I know there must be an official name to this but unfortunately I have forgotten the term. I have an integer which changes, lets say its 10. I want to divide this into however many groups as long as the result in each of the groups is 3. The leftover group if its not 3 should be 1 or 2 as I am only using whole numbers.

I also want to check this every 3 iterations but from the start so the non 3 comes at the end, so for 10

number = 3, $tag = col-md-4

number = 3, $tag = col-md-4

number = 3, $tag = col-md-4

number = 1, $tag = col-md-12

sorry if this is trivial

Answer 1

I think you are thinking of modulo (php modulo operator %)? It provides the remainder after performing division. For example:

Division:

10 / 3 = 3.333...

Modulo:

10 % 3 = 1

In programming use, you can use the floor of the first (division) operation to get the number of full groups, and the modulus to get the size of the last group.

For example, if you start with 14:

How many groups of 3?

floor(14 / 3) = 4

How many in last group?

14 % 3 = 2