Use the method { public static boolean is ConsecutiveFour(int[][] values) } to t
ID: 3798145 • Letter: U
Question
Use the method { public static boolean is ConsecutiveFour(int[][] values) } to test whether two dimensional array has four consecutive numbers of the same value , either horizontally , vertically , or diagonally.(java please)
1-nstead of having your program get input from the keyboard make it read the data from files (num1.txt, num2.txt,num3.txt,num4.txt,num5.txt,num6.txt)
example : num6.txt
0 1 0 3 1 6 1
0 1 6 8 6 0 1
5 5 2 2 8 2 9
6 4 2 2 2 2 1
1 5 6 2 4 0 7
3 4 3 2 4 0 7
num5.txt
0 0 0 0 1 6 1
0 1 6 8 6 1 1
9 6 2 1 1 2 2
6 9 6 1 1 9 2
1 3 9 1 4 0 2
3 3 3 9 4 0 2
2-Pass the name of the file into your program as a command line argument...Look at CmdLine.java for an example of this!
import java.util.*;
import java.io.*;
public class Cmdline {
public static void main(String[] args)throws FileNotFoundException{
System.out.println("args[0]is "+args[0]);
Scanner s=new Scanner(new File(args[0]));
while(s.hasNext()){
int x=s.nextInt();
System.out.println("x is "+x);
}
s.close();
Explanation / Answer
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class Lab5c {
public static void main(String[] args) {
Scanner input = null;
try {
input = new Scanner(new File(args[0]));
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
int[][] m = new int[100][100];
int x=-1,y=0;
while(input.hasNextLine())
{
String line=input.nextLine();
x++;
y=line.split(" ").length;
String[] array=line.split(" ");
for (int i = 0; i < array.length; i++) {
m[x][i]=Integer.valueOf(array[i]);
}
}
System.out.println(isConsecutiveFour(m));
}
public static boolean isConsecutiveFour(int[][] values) {
// checking rows
for (int i = 0; i < values.length; i++) {
int current = values[i][0];
int consecutiveCount = 0; // values[i][0] starts count
for (int j = 0; j < values[i].length; j++) {
if (values[i][j] == current) {
consecutiveCount++;
if (consecutiveCount == 4) return true;
} else {
current = values[i][j];
consecutiveCount = 1;
}
}
}
// check columns
for (int j = 0; j < values[0].length; j++) {
int consecutiveCount = 0; // values[0][j] starts count
int current = values[0][j];
for (int i = 0; i < values.length; i++) {
if (values[i][j] == current) {
consecutiveCount++;
if (consecutiveCount == 4) return true;
} else {
current = values[i][j];
consecutiveCount = 1;
}
}
}
// check topLeft side: going upright
for (int i = values.length - 1; i > 0; i--) {
int y = i;
int x = 0;
int consecutive = 0;
int current = values[y][x];
while (y >= 0) {
System.out.println("y = " + y + " x = " + x);
if (values[y][x] == current) {
consecutive++;
if (consecutive == 4) return true;
} else {
consecutive = 1;
current = values[y][x];
}
x++;
y--;
}
}
// check bottom right side: going upright
for (int j = 0; j < values[0].length; j++) {
int y = values.length - 1;
int x = j;
int consecutive = 0;
int current = values[y][x];
while (x < values[0].length && y >= 0) {
System.out.println("y = " + y + " x = " + x);
if (values[y][x] == current) {
consecutive++;
if (consecutive == 4) return true;
} else {
consecutive = 1;
current = values[y][x];
}
x++;
y--;
}
}
// check bottom left side going up-left
for (int j = values[0].length - 1; j > 0; j--) {
int x = j;
int y = values.length - 1;
int current = values[y][x];
int consecutiveCount = 0;
while (x >= 0 && y >= 0) {
if (values[y][x] == current) {
consecutiveCount++;
if (consecutiveCount == 4) return true;
} else {
consecutiveCount = 1;
current = values[y][x];
}
x--;
y--;
}
}
// check bottom right side going up-left
for (int row = 1 ; row < values.length; row++) {
int x = values[0].length - 1;
int y = row;
int consecutive = 0;
int current = values[y][x];
while (y >= 0) {
System.out.println("y = " + y + " x = " + x);
if (values[y][x] == current) {
consecutive++;
if (consecutive == 4) return true;
} else {
consecutive = 1;
current = values[y][x];
}
x--;
y--;
}
}
return false;
}
}
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