Method nullifyColumn

java/Chapter 1/Question1_7/Question.java:12–16

(int[][] matrix, int col)

	}

	public static void nullifyColumn(int[][] matrix, int col) {
		for (int i = 0; i < matrix.length; i++) {
			matrix[i][col] = 0;
		}		
	}		
	
	public static void setZeros2(int[][] matrix) {
		boolean rowHasZero = false;