1.

What does the following piece of code do?

for(int i = 0; i < row; i++)
{  
    for(int j = 0; j < column; j++)
    {
        if(i == j)
            sum = sum + (array[i][j]);
    }
}
System.out.println(sum);

A. Normal of a matrix
B. Trace of a matrix
C. Square of a matrix
D. Transpose of a matrix
Answer» C. Square of a matrix


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