Calculate Log2n without using built-in function

Objective: Given a number n, write a program to calculate Log₂n without using built-in function.

Example:

N = 32
Log232 = 5

N = 64
Log264 = 6

Approach:

• Initialize result = 0.
• Keep dividing the given number by 2 till number is greater than 0 and add one to the result if n is greater than equal to 1.

Java Code:Run This Code

Output:

Log64 value: 6