Microsoft Interview Question
Web:
www.microsoft.com
|
HQ:
Redmond, WA
Overview |
| |
Salaries |
| |
Reviews |
| |
Interviews |
| |
Photos |
| |
Jobs |
| |
|
1,272 Interview Reviews |
Back to all Microsoft Interview Questions & Reviews
Interview questions and reviews posted anonymously by interview candidates
Interview Question for Software Development Engineer at Microsoft:
Jan 6, 2012
write a boolean method to find out if a number is a power of 2
Add Tags
[?]
See more for this Microsoft Software Development Engineer Interview
Helpful Question?
Yes |
No
Inappropriate?
Answers & Comments (4)
0 of 2 people found this helpful
Feb 1, 2012
dpetek's solution returns true for n = 2, which is incorrect.
My solution:
bool IsPowerOfTwo(int n)
{
int val;
return Int32.TryParse(Math.Sqrt(num).ToString(), out val);
}
My solution:
bool IsPowerOfTwo(int n)
{
int val;
return Int32.TryParse(Math.Sqrt(num).ToString(), out val);
}
Helpful Answer?
Yes |
No
Inappropriate?
Apr 9, 2012
2 to the power of 1 is 2
Helpful Answer?
Yes |
No
Inappropriate?
Apr 15, 2012
bool isPowerOfTwo(int x) { return (x & (x - 1)) == 0; }
Helpful Answer?
Yes |
No
Inappropriate?
To comment on this
question,
Sign In with Facebook or
Sign Up
You might also be interested in: Interview Questions, Software Development Engineer Interview Questions, Microsoft Interview
2 of 4 people found this helpful
by dpetek:
return (n & (-n)) == n;
}