Create a new public static method called ‘isLatinSquare’ that passes in a two-dimensional array. This new method...
Create a new public static method called ‘isLatinSquare’ that passes in a two-dimensional array. This new method will return ‘true’ if the passed array is a Latin Square.
isLatinSquare(int[][]) should be one or two lines of code
Homework Answers
public static boolean isLatinSquare(int[][] matrix) {
boolean[][] row_temp = new boolean[matrix.length][matrix.length];
boolean[][] col_temp = new boolean[matrix.length][matrix.length];
for (int i = 0; i < matrix.length; i++) {
if (matrix[i].length != matrix.length)
return false;
for (int j = 0; j < matrix.length; j++) {
int index = matrix[i][j] - 1;
if (row_temp[i][index] || col_temp[j][index])
return false;
row_temp[i][index] = col_temp[j][index] = true;
}
}
return true;
}
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