1952. Three Divisors
Description
Given an integer n
, return true
if n
has exactly three positive divisors. Otherwise, return false
.
An integer m
is a divisor of n
if there exists an integer k
such that n = k * m
.
Example 1:
Input: n = 2 Output: false Explantion: 2 has only two divisors: 1 and 2.
Example 2:
Input: n = 4 Output: true Explantion: 4 has three divisors: 1, 2, and 4.
Constraints:
1 <= n <= 104
Solutions
Solution 1
1 2 3 |
|
1 2 3 4 5 6 7 8 9 10 11 |
|
1 2 3 4 5 6 7 8 9 10 |
|
1 2 3 4 5 6 7 8 9 |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 |
|
Solution 2
1 2 3 4 5 6 7 8 9 |
|
1 2 3 4 5 6 7 8 9 10 11 |
|
1 2 3 4 5 6 7 8 9 10 11 12 |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 |
|
1 2 3 4 5 6 7 8 9 10 11 12 13 |
|