By MRINAL SINHA
The project uses the bits manipulation technique to find the sum of each subset of the given set in C++.
BIT MANIPULATION :
All data in computer programs are internally stored as bits, i.e., as numbers 0 and 1.
In bits manipulation, we represent integers as bits and manipulate them using bit operations. There are many uses for bit operations in algorithm programming.
BIT OPERATION :
AND operation :
For example, 22 & 26 = 18,
& 11010 (26)
= 10010 (18)
OR operation :
For example, 22 | 26 = 30,
| 11010 (26)
= 11111 (31)
XOR operation :
For example, 22 ^ 26 = 12,
^ 11010 (26)
= 01101 (13)
NOT operation :
x = 00000000000000100000010000011101
~x = 11111111111111011111101111100010
1. We will run the outer loop for the value of j=0 to j= power(2,n)-1, and one inner loop run for the value of i=0 to i=n-1.
2. We will check if the ith bit if the integer j is set or not.
3. If the ith bit is set then add A[i] to the sum.
4. Return sum.
1. Little knowledge in bits manipulation and knowledge of programming language c++.
2. Any IDE to compile and run the code.
1. 1 << n is equal to pow(2,n).
2. j&(1<<i) is used to find that ith bit of integer j is set or not.