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There is a magic square matrix in such a way that sum of a
column or a row are same like
3 5 2
4 3 3
3 2 5
sum of each column and row is 10.
you have to check that matrix is magic matrix or not?
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Answer / hussein
public class MagicSquares {
public static void main(String[] args) {
int magic[][] = { { 3, 5, 2}, { 4, 3, 3}, { 3, 2, 5};
int total = 0, sum, sum1;
for (int r = 0; r < 3; ++r) {
for (int c = 0; c < 3; ++c) {
total += magic[r][c];
if (magic[r][c] < 10)
System.out.print(" " + magic[r][c]);
else
System.out.print(" " + magic[r][c]);
}
System.out.println();
}
int sumrow[] = new int[4];
for (int c = 0; c < 4; ++c)
sumrow[c] = 0;
for (int row = 0; row < 4; row++)
for (int c = 0; c < 4; ++c)
sumrow[row] += magic[row][c];
int sumcol[] = new int[4];
for (int c = 0; c < 4; ++c)
sumcol[c] = 0;
for (int col = 0; col < 4; col++)
for (int r = 0; r < 4; ++r)
sumcol[col] += magic[r][col];
int sumdiag[] = new int[2];
for (int diag = 0; diag < 4; diag++)
sumdiag[0] += magic[diag][diag];
for (int diag = 0; diag < 4; ++diag)
sumdiag[1] += magic[3 - diag][diag];
sum = total / 4;
sum1 = (sum + ((sumdiag[0] + sumdiag[1]) / 2)) / 2;
if (sum1 == sum)
System.out.println("This is a magic square!");
else
System.out.println("This is not a magic square!");
}
| Is This Answer Correct ? | 7 Yes | 0 No |
class X { private: int a; protected: X(){cout<<"X constructor was called"<<endl;} ~X(){cout<<"X destructor was called"<<endl} }; Referring to the code above, which one of the following statements regarding "X" is TRUE? a) X is an abstract class. b) Only subclasses of X may create X objects. c) Instances of X cannot be created. d) X objects can only be created using the default copy constructor. e) Only friends can create instances of X objects.
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