Answer / venkat1435

main()
{
int n,count=0;
printf("enter a number");
scanf("%d",&n);//enterd no.is 5
while(n>0)
{
count++;
n=n&n-1;//binary of n is 101
// binary of n-1 is 100
//n&n-1 is (i.e 101
&100 =100 )

}
printf("%d",count);
getch();
} output is 2(i.e 2 ones in 101)

Answer / pappu kumar sharma

int fnCntbts(int num )
{
int iCnt = 0;
while ( num )
{
num &= (num-1) ;
iCnt++;
}

return iCnt;

}

Answer / boomer

pseudo

int size is 32 bits...right?

for(i = 0 to 31)
{
count += (value & 1) //& = and oprator
shift left value
}

Answer / bryan w

Question needs clarification. What platform? There are
bitwise trick that are optimal for various platforms, but
you need to know if the value is 16 bit, 32 bit, 64 bit, 128
bit, or something else entirely.

The earlier three examples are all incorrect for operating
on signed integers; if a negative value is presented the
code will fail.

The most efficient portable human readable answer is to loop
over sizeof type * CHAR_BITS times, shift left and add one
if the bit is set.

On some platforms the most efficient way is to use a bit of
assembly (such as the POPCNT instruction if available) to
perform the operation for you.

Without either of those, there are simple classic algorithms
of &, |, and ^ to accumulate the bits and sum them. They
need to be adjusted to match the architecture's number of
bits. These routines may be inefficient on modern PCs with
long pipelines or out-of-order processing cores.

Write the program that calculates and prints the average of several integers. Assume that the last value read is sentinel 9999.

0 Answers  

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Write a code on reverse string and its complexity.

0 Answers   Expedia,

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24.what is a void pointer? 25.why arithmetic operation can’t be performed on a void pointer? 26.differentiate between const char *a; char *const a; and char const *a; 27.compare array with pointer? 28.what is a NULL pointer? 29.what does ‘segmentation violation’ mean? 30.what does ‘Bus Error’ mean? 31.Define function pointers? 32.How do you initialize function pointers? Give an example? 33.where can function pointers be used?

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what is the full form of c language

9 Answers   Satyam, TCS, VNC,

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What are disadvantages of C language.

0 Answers   iNautix,

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why use "return" statement a) on executing the return statement it immediately transfers the control back to the calling program b) it returns the value present in the parentheses return, to the calling program c) a & b d) none of the above

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a 'c' program to tell that the set of three coordinates lie on a same line

3 Answers   Persistent,

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1.what are local and global variables? 2.what is the scope of static variables? 3.what is the difference between static and global variables? 4.what are volatile variables? 5.what is the use of 'auto' keyword? 6.how do we make a global variable accessible across files? Explain the extern keyword? 7.what is a function prototype? 8.what does keyword 'extern' mean in a function declaration?

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which one of follwoing will read a character from keyboard and store in c a)c=getc() b)c=getchar() c)c=getchar(stdin) d)getc(&c) e)none

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What is a Deque?

2 Answers  

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You have given 2 array. You need to find whether they will create the same BST or not. For example: Array1:10 5 20 15 30 Array2:10 20 15 30 5 Result: True Array1:10 5 20 15 30 Array2:10 15 20 30 5 Result: False One Approach is Pretty Clear by creating BST O(nlogn) then checking two tree for identical O(N) overall O(nlogn) ..we need there exist O(N) Time & O(1) Space also without extra space .Algorithm ?? DevoCoder guest Posted 3 months ago # #define true 1 #define false 0 int check(int a1[],int a2[],int n1,int n2) { int i; //n1 size of array a1[] and n2 size of a2[] if(n1!=n2) return false; //n1 and n2 must be same for(i=0;i<n1-1;i++) { if( !( (a1[i]>a1[i+1]) && (a2[i]>a2[i+1]) ) ) return false; } return true;//assumed that each array doesn't contain duplicate elements in themshelves }

0 Answers   Facebook,

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code for bubble sort?

1 Answers  

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