[algogeeks] matrix Multiplication

2013-01-19 Thread Koup
I want to get the power of an matrix. I mean lets say my matrix is A i wanna get the A ^k. I have though the simple algorithm that gives me O(n^3).I though I could do some kind of a change to modify it and be faster. I could use the algorithm that is used to get the power of a number that

Re: [algogeeks] matrix Multiplication

2013-01-19 Thread Koup
Just to make sure I understood your code that if means that in case the k is an odd number just multiply the accumulator 1 time with the val and continue with even k.A question I have is if a recursive implementation of this would be any faster? Τη Σάββατο, 19 Ιανουαρίου 2013 1:06:25 μ.μ.

[algogeeks] Largest contigious subarray with average greather than k

2012-11-20 Thread Koup
Consider an array of N integers. Find the longest contiguous subarray so that the average of its elements is greater than a given number k I know the general brute force solution in O(N^2). Is there any efficient solution using extra space? --

Re: [algogeeks] Largest contigious subarray with average greather than k

2012-11-20 Thread Koup
, 9892159511 Oracle Corporation On Tue, Nov 20, 2012 at 10:43 PM, Koup anasta...@gmail.com javascript:wrote: Consider an array of N integers. Find the longest contiguous subarray so that the average of its elements is greater than a given number k I know the general brute force solution

Re: [algogeeks] Largest contigious subarray with average greather than k

2012-11-20 Thread Koup
it does the division 29/6 that is lower than k = 5 . Τη Τρίτη, 20 Νοεμβρίου 2012 8:28:33 μ.μ. UTC+2, ο χρήστης Sachin Chitale έγραψε: Sorry Koup, Plz ignore previous code, it has errors use below code public class Kadanes { static int maxAvgSum(int a[], int k) { int max_so_far = 0

[algogeeks] Re: Largest contigious subarray with average greather than k

2012-11-20 Thread Koup
To be correct I need the longest subarray that has an average greater than k but my main problem here is to find the longest one. Thank you ! --