0 in 0th row as well as 0 in 0th col and hence true
Best Regards Ashish Goel "Think positive and find fuel in failure" +919985813081 +919966006652 On Tue, Oct 4, 2011 at 8:28 AM, rahul sharma <[email protected]>wrote: > row0 and col0 initilayy true coz we have 0 in 0 row???or these r default > values? > > > On Tue, Oct 4, 2011 at 8:07 AM, Ashish Goel <[email protected]> wrote: > >> 1 1 0 1 >> 0 1 1 1 >> 1 1 1 1 >> 1 1 1 0 >> >> row0 is true >> col0 is true >> >> for (int i=1; i<n;i++) >> for (int j=1;j<m;j++) >> if (a[i][j] == 0) {a[i][0]=0; a[0][j]=0;} >> >> now after this >> 1 1 0 0 >> 0 1 1 1 >> 1 1 1 1 >> 0 1 1 0 >> >> for (int i=1; i<n;i++) >> if (a[i][0] ==0) for (int j=1; j<m;j++) a[i][j]=0; >> for (int j=1; i<m;j++) >> if (a[0][j] ==0) for (int i=1; i<n;i++) a[i][j]=0; >> >> after this >> 1 1 0 0 >> 0 0 0 0 >> 1 1 0 0 >> 0 0 0 0 >> >> >> because of row0 and col0 vars >> >> >> final output is >> 0 0 0 0 >> 0 0 0 0 >> 0 1 0 0 >> 0 0 0 0 >> >> Best Regards >> Ashish Goel >> "Think positive and find fuel in failure" >> +919985813081 >> +919966006652 >> >> >> On Tue, Oct 4, 2011 at 7:49 AM, rahul sharma <[email protected]>wrote: >> >>> @ashish can u give an xample.....plz...i have read a lot archives ...but >>> cant find in 0(1) space....u using 2 var only...plz give xample...nended >>> urgent.thnx >>> >>> >>> On Tue, Oct 4, 2011 at 7:26 AM, Ashish Goel <[email protected]> wrote: >>> >>>> keep two var row0 and col0 for checking if there is any 0 in row0flag >>>> /col0flag >>>> >>>> now walk over elements from 1,1 to n,m and set corresponding entry in >>>> 0th row /column if you hit a zero. >>>> >>>> now walk over zeroth column and rwo and set the complete row/col if a 0 >>>> is there in 0th row/col. >>>> >>>> after this based on row0flag/col0flag, set oth col/row values to 0. >>>> >>>> Best Regards >>>> Ashish Goel >>>> "Think positive and find fuel in failure" >>>> +919985813081 >>>> +919966006652 >>>> >>>> >>>> >>>> On Mon, Oct 3, 2011 at 12:08 PM, rahul sharma >>>> <[email protected]>wrote: >>>> >>>>> yeah it is wrong......i have a solution but uses 0(n+m) space.....i >>>>> need it in 0(n*m) tymand o(1) space >>>>> >>>>> >>>>> On Mon, Oct 3, 2011 at 11:55 AM, shady <[email protected]> wrote: >>>>> >>>>>> search archives :-/ >>>>>> >>>>>> >>>>>> On Mon, Oct 3, 2011 at 11:47 AM, pranav agrawal < >>>>>> [email protected]> wrote: >>>>>> >>>>>>> @rahul sharma, i ran this code, it is producing wrong answer :| >>>>>>> >>>>>>> check it, http://codepad.org/THv1hJq1 >>>>>>> >>>>>>> anyone with correct solution? 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