2009/8/26 umesh kewat <umesh1...@gmail.com>: > hi > i have one doubt if negative by 1 in a row if any element got zero and again > doing same operation to get another element to be zero so 1st element is > negative so could u please tell me the matrix automatically do the positive > value else as it. if it is negative then ans is No, we will not get O > matrix(one with all zeroes in it.) else there have some solution to get O > matrix. In the problem statement, "Now they all have positive integers." Negative number should be avoid in the solution.
> On Wed, Aug 26, 2009 at 12:13 AM, ankur aggarwal <ankur.mast....@gmail.com> > wrote: >> >> I've always wanted to feel the excitement in these interviews. I got a >> chance, and I liked it. >> >> Here is the question: >> >> You are given a matrix: r rows, c cols. r x c matrix. >> >> Now they all have positive integers. Assume that the computer has no >> overflow, it can store all possible integer values. >> >> Now there are only two operations you can perform on the matrix: >> >> a. Multiply one whole column (of size r elements) by 2 aij = aij * 2 >> b. Decrement a whole row (of size c elements) by 1. aij = aij - 1 >> >> Now you are required to find out if it's possible with these operations to >> convert this matrix into the O matrix. (one with all zeroes in it.) >> >> If so, how do you solve it? Or when do you decide to terminate? >> >> give the algo.. >> not the code. >> >> > > > > -- > Thanks & Regards > > Umesh kewat > > IIIT-Hyderabad > > > > > > > -- __________________________________________________ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Algorithm Geeks" group. To post to this group, send email to algogeeks@googlegroups.com To unsubscribe from this group, send email to algogeeks+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/algogeeks -~----------~----~----~----~------~----~------~--~---
