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<?php $A = [-9, -2, 1, 5, 9]; $X = -2; function solution(&$A, $X) { $N = sizeof($A); if ($N == 0) { return -1; } $l = 0; $r = $N - 1; while ($l < $r ) { $m = (int)(($l + $r) / 2); if ($A[$m] === $X) return $m; if ($A[$m] > $X) { $r = $m; } else { $l = $m; } } if ($A[$l] == $X) { return $l; } else return -1; } var_dump(solution($A, $X));
Output for 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.10, 7.2.0 - 7.2.33, 7.3.12 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
int(1)
Output for 4.4.2 - 4.4.9, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29
Parse error: syntax error, unexpected '[' in /in/IQsCJ on line 3
Process exited with code 255.
Output for 4.3.0 - 4.3.1, 4.3.5 - 4.3.11, 4.4.0 - 4.4.1, 5.0.0 - 5.0.5
Parse error: parse error, unexpected '[' in /in/IQsCJ on line 3
Process exited with code 255.
Output for 4.3.2 - 4.3.4
Parse error: parse error in /in/IQsCJ on line 3
Process exited with code 255.
preferences:
208.09 ms | 401 KiB | 312 Q