Program to check if the points are parallel to X axis or Y axis

Given n points, we need to check if these n points are parallel to X axis or Y axis or to No axis.

Examples:

Input : x[] = {0, 0, 0, 0, 0|
        y[] = {9, 2, 1, 3, 4}
Output : Parallel to X Axis

Input : x[] = {1, 2, 3|
        y[] = {9, 2, 1}
Output : Not Parallel to X or Y Axis

Approach

To find the points parallel to X or Y axis just check if the points are same for any axis or not. If all the points on X axis are same then the line is parallel to X axis. If all the points on Y axis are same so the line is parallel to Y axis otherwise it is not parallel to any axis.
Input the value N. And then Input the value of points in a


C++


[sourcecode language=”CPP”]
// CPP program to check for parallel
// to X and Y Axis
#include <bits/stdc++.h>
using namespace std;

// To check for parallel line
void parallel(int n, int a[][2])
{
bool x = true, y = true;

// checking for parallel to X and Y
// axis condition
for (int i = 0; i < n – 1; i++) {
for (int j = 0; j < 2; j++) {
if (a[i][0] != a[i + 1][0])
x = false;
if (a[i][1] != a[i + 1][1])
y = false;
}
}

// To display the output
if (x)
cout << "parallel to X Axis" << endl;
else if (y)
cout << "parallel to Y Axis" << endl;
else
cout << "Not parallel to X"
<< " and Y Axis" << endl;
}

// Driver’s Code
int main()
{
int a[][2] = { { 1, 2 },
{ 1, 4 },
{ 1, 6 },
{ 1, 0 } };

int n = sizeof(a) / sizeof(a[0]);
parallel(n, a);
return 0;
}
[/sourcecode]

Java


[sourcecode language=”JAVA”]
// JAVA program to illustrate..
// To check for parallel
// To X and Y Axis

import java.io.*;
import java.util.*;

class GFG {

// To check for parallel line
static void parallel(int a[][])
{
boolean x = true, y = true;

// checking for parallel to X and Y
// axis condition
for (int i = 0; i < a.length – 1; i++) {
for (int j = 0; j < 2; j++) {
if (a[i][0] != a[i + 1][0])
x = false;
if (a[i][1] != a[i + 1][1])
y = false;
}
}

// To display the output
if (x)
System.out.println("Parallel to X Axis");
else if (y)
System.out.println("Parallel to Y Axis");
else
System.out.println("Not parallel to X" +
" and Y axis");
}

public static void main(String[] args)
{
int a[][] = { { 1, 2 },
{ 1, 4 },
{ 1, 6 },
{ 1, 0 } };
parallel(a);
}
}
[/sourcecode]

PHP


[sourcecode language=”php”]

<?php
// PHP program to check for parallel
// to X and Y Axis

// To check for parallel line
function parallel($n, $a)
{
$x = true; $y = true;

// checking for parallel
// to X and Y axis condition
for ($i = 0; $i < $n – 1; $i++)
{
for ($j = 0; $j < 2; $j++)
{
if ($a[$i][0] != $a[$i + 1][0])
$x = false;
if ($a[$i][1] != $a[$i + 1][1])
$y = false;
}
}

// To display the output
if ($x)
echo "parallel to X Axis" ;
else if (y)
echo "parallel to Y Axis" ;
else
echo "Not parallel to X"
, " and Y Axis";
}

// Driver’s Code
$a = array(array(1, 2),
array(1, 4),
array(1, 6),
array(1, 0));

$n = count($a);
parallel($n, $a);

//This code is contributed by anuj_67
?>

[/sourcecode]

Output:

Parallel to X Axis


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Improved By : vt_m, Mithun Kumar