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How to find the power of any given number by backtracking using C#?
Create a function to Find Power which takes the number x and n, where x is the 2 and n is how many times, we have to do the power. If the number is even then we have to do x*x and if the number is odd multiply the result with x*x. Continue the recursive call until the n becomes 0.
Suppose if we have a number 2 and 8, then 2*2*2*2*2*2*2*2 =256.
Example
using System; namespace ConsoleApplication{ public class BackTracking{ public int FindPower(int x, int n){ int result; if (n == 0){ return 1; } result = FindPower(x, n / 2); if (n % 2 == 0){ return result * result; } else{ return x * result * result; } } } class Program{ static void Main(string[] args){ BackTracking b = new BackTracking(); int res = b.FindPower(2, 8); Console.WriteLine(res); } } }
Output
256
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