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Qualcomm Interview Question for Software Engineer / Developers


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0
of 0 vote

Checking whether y is a power of 2 or not. Only when y= 2^n, y&(y-1) will be zero. and foo returns true.

- Win August 04, 2010 | Flag Reply
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0
of 0 votes

what will happen if y==0

- an August 05, 2010 | Flag
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0
of 0 votes

This also will return 0. So, to be precise, to check at most one bit is set.

- Siddique August 18, 2010 | Flag
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0
of 0 votes

Sorry, this will return true. So, the function is to check if at most one bit is set.

- Siddique August 18, 2010 | Flag
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0
of 0 vote

bool keyword is not in C. did they expect the interviewe to point this ?

- initrd August 12, 2010 | Flag Reply
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0
of 0 votes

and who said this code was in C?

- zoso June 05, 2012 | Flag
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0
of 0 vote

bool keyword is not in C. did they expect the interviewe to point this ?

- initrd August 12, 2010 | Flag Reply
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0
of 0 vote

return x && ((x&(x-1)) == 0);

- Ankush Bindlish August 13, 2010 | Flag Reply
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0
of 0 vote

The function checkes wether y is a power of 2.
here is the output:
y: foo(y)
0: 1
1: 1
2: 1
3: 0
4: 1
5: 0
6: 0
7: 0
8: 1
9: 0
10: 0
11: 0
12: 0
13: 0
14: 0
15: 0
16: 1
17: 0
18: 0
19: 0
20: 0
21: 0
22: 0
23: 0
24: 0
25: 0
26: 0
27: 0
28: 0
29: 0
30: 0
31: 0
32: 1

- N568 January 21, 2012 | Flag Reply
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0
of 0 vote

bool is not an c keyword ...func checks for power of 2 when y >=0

- vishal October 25, 2012 | Flag Reply
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-1
of 1 vote

i think function checks if y belongs to [2,3,4,5]

- dheeraj December 02, 2011 | Flag Reply


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