• Write an efficient C program to count the number of bits set in an
  unsigned integer.
  i/p     o/p
  ====    ===
  0(00)    0
  1(01)    1
  2(10)    1
  3(11)    2
  .....  ...
  

  Counting Bits

  View SlideShare presentation or Upload your own. (tags: algorithms)

• Write a small C program, which while compiling takes another program
  from input terminal, and on running gives the result for the second
  program. (NOTE: The key is, think UNIX).
  
  
  Suppose, the program is 1.c
  Then, while compiling
  $ cc -o 1 1.c
  int main()
  {
      printf("Hello World\n");
  }
  ^D
  $ ./1
  Hello World
  $
  

• Given a string s1 and a string s2, write  a snippet to say whether s2 is a
  rotation of s1 using only one call to strstr routine?
  
  (eg given s1 = ABCD and s2 = CDAB, return  true,
        given s1 = ABCD, and s2 = ACBD , return false)
  

• What's the  "condition" so that the following code
  snippet  prints both HelloWorld !
  
  if  "condition"
          printf ("Hello");
  else
          printf("World");
  

This work by Gowri Kumar Chandramouli is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License.