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PHP Challenges: Find three numbers from an array such that the sum of three consecutive numbers equal to a given number

PHP Challenges - 1: Exercise-7 with Solution

Write a PHP program to find three numbers from an array such that the sum of three consecutive numbers equal to a given number.

Input : (array(2, 7, 7, 1, 8, 2, 7, 8, 7), 16))
Output : Array
(
[0] => 2 + 7 + 7 = 16
[1] => 7 + 1 + 8 = 16
)

Sample Solution :-

PHP Code :

<?php
function three_Sum($arr, $target)
{
$count = count($arr) - 2;
$result=[];
for ($x = 0; $x < $count; $x++) {
    if ($arr[$x] + $arr[$x+1] + $arr[$x+2] == $target) {
        array_push($result, "{$arr[$x]} + {$arr[$x+1]} + {$arr[$x+2]} = $target");
    }
}
return $result;
}
$my_array = array(2, 7, 7, 1, 8, 2, 7, 8, 7);
print_r(three_Sum($my_array, 16));
print_r(three_Sum($my_array, 11));
print_r(three_Sum($my_array, 12));
?>

Output :

Array                                                       
(                                                           
    [0] => 2 + 7 + 7 = 16                                   
    [1] => 7 + 1 + 8 = 16                                   
)                                                           
Array                                                       
(                                                           
    [0] => 1 + 8 + 2 = 11                                   
)                                                           
Array                                                       
(                                                           
)             

Flowchart:

PHP Flowchart: Find four numbers from an array such that the sum of three consecutive numbers equal to a given number

PHP Code Editor:

<?php
function three_Sum($arr, $target)
{
$count = count($arr) - 2;
$result=[];
for ($x = 0; $x < $count; $x++) {
    if ($arr[$x] + $arr[$x+1] + $arr[$x+2] == $target) {
        array_push($result, "{$arr[$x]} + {$arr[$x+1]} + {$arr[$x+2]} = $target");
    }
}
return $result;
}
$my_array = array(2, 7, 7, 1, 8, 2, 7, 8, 7);
print_r(three_Sum($my_array, 16));
print_r(three_Sum($my_array, 11));
print_r(three_Sum($my_array, 12));
?>

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