double[][] studentGrade={{10,20,0},{20,40,0}}; A method called computeAvg will take this 2-D array studentGrade as the parameter, compute the average of 1st and 2nd columns and put the average at the 3rd column for each row. Then it should print the values of the resulting 2-D array. The array should be printed in the form of a matrix. In your main method, call the computeAvg method.

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Array

The simplest way to start thinking about an array is as a collection, or a set of elements. In programming, these elements may be constants, variables, functions and pointers.