A 2D matrix is given which is sorted row-wise and column-wise in ascending
order. Search a given element in minimum possible time.

like matrix is :

1 2 3 4
6 9 12 15
7 13 16 19
20 21 22 26

and you have to search for 7.

Please don't provide codes, algorithm or pseudo code will be really great.

-- 
Thanks & Regards,
Gaurav Gupta

"Quality is never an accident. It is always result of intelligent effort" -
John Ruskin

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