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we can do it in O( Max(logN , logM))
- kasireddi1990 March 15, 2012explaination :
1. use 3 variables to store
intialize 1. to A[0][0]
2. to A[0][m-1]
3. to A[n-1][m-1]
2. use search similar to binary search b/w 1. and 2. to find in which col. element is there
3. use search similar to binary search b/w column_numbet_starting_element and 3. to find in in which row ( even exact )element .
time complexity := O( Max ( logN ,logM)).