thousand-separator

< Previous 　　　　　　　　　　　　　　　　 Next >

1556. Thousand Separator (Easy)

Given an integer n, add a dot (".") as the thousands separator and return it in string format.

 

Example 1:

Input: n = 987
Output: "987"

Example 2:

Input: n = 1234
Output: "1.234"

Example 3:

Input: n = 123456789
Output: "123.456.789"

Example 4:

Input: n = 0
Output: "0"

 

Constraints:

• 0 <= n < 231

Related Topics

[String]

Hints

Hint 1

Scan from the back of the integer and use dots to connect blocks with length 3 except the last block.