?
Solved

powerN  challenge

Posted on 2016-09-09
3
Medium Priority
?
98 Views
Last Modified: 2016-09-11
Hi,

I am working on below challenge
http://codingbat.com/prob/p158888


Given base and n that are both 1 or more, compute recursively (no loops) the value of base to the n power, so powerN(3, 2) is 9 (3 squared).

powerN(3, 1) → 3
powerN(3, 2) → 9
powerN(3, 3) → 27
i was not clear on how to find the powerN using recursion? please advise
0
Comment
Question by:gudii9
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 28

Accepted Solution

by:
rrz earned 2000 total points
ID: 41792204
This challenge is very similar to the other challenges that you started to the same time. I can give you two hints about the base case here.  Every number to the power of 0 is equal to one.  Furthermore, every number multiplied by 1 is equal to that same number.
0
 
LVL 7

Author Comment

by:gudii9
ID: 41793661
public int powerN(int base, int n) {
   if(n==0) return 1;
//  if(n==1) return base;
  else{
   return base*powerN(base,n-1);
  }
}

Open in new window

above passes all test. any alternate approaches or improvements?
0
 
LVL 28

Expert Comment

by:rrz
ID: 41793740
My solution is the same as yours.
0

Featured Post

[Webinar] How Hackers Steal Your Credentials

Do You Know How Hackers Steal Your Credentials? Join us and Skyport Systems to learn how hackers steal your credentials and why Active Directory must be secure to stop them.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

If you’re thinking to yourself “That description sounds a lot like two people doing the work that one could accomplish,” you’re not alone.
This article will show how Aten was able to supply easy management and control for Artear's video walls and wide range display configurations of their newsroom.
Viewers will learn about arithmetic and Boolean expressions in Java and the logical operators used to create Boolean expressions. We will cover the symbols used for arithmetic expressions and define each logical operator and how to use them in Boole…
Viewers will learn how to properly install Eclipse with the necessary JDK, and will take a look at an introductory Java program. Download Eclipse installation zip file: Extract files from zip file: Download and install JDK 8: Open Eclipse and …
Suggested Courses
Course of the Month8 days, 10 hours left to enroll

764 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question