This technique is usually faster for small numbers. For example, it is used in Golang for numbers that are less than `100`

.

The idea is to use a dictionary to transform an integer into its string representation. The dictionary looks like this:

Interger | String |
---|---|

0 | "0" |

1 | "1" |

... |

For numbers that are less than `10`

it is pretty straightforward, it is a basic lookup in the table.

For bigger numbers we need to divide it by its base until it goes in the first case.

Here is my own implementation written in JavaScript:

JavaScript

` ````
// Char set
const cs = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
function intToString(n, base = 10) {
let res = "";
// 0 is a special case
if (n == 0) {
return "0";
}
while(n > 0) {
res = cs[n % base] + res;
n = parseInt(n / base);
}
return res;
}
```

This section will be detailed soon.