MATLAB: How to swap two bits in matlab.? which cammond is used for this..

Question

Input: n = 28, p1 = 0, p2 = 3

Output: 21

28 in binary is 11100. If we swap 0'th and 3rd digits,

we get 10101 which is 21 in decimal.

Answer 1

>> a=de2bi(28)
a =
     0     0     1     1     1

Here swap first and Fifth Elements (Change as per your requirements)

>> a([1 5])=a([5 1])
a =
     1     0     1     1     0
>> a=bi2de(a)
a =
    13
>>