true
echo '
';
echo isContinuousSequence([10, 11, 12, 14, 15]); // => false
echo '
';
echo isContinuousSequence([]); // => false
echo '
';
echo isContinuousSequence([0, 1, 2, 3]); // => true
echo '
';
echo isContinuousSequence([-5, -4, -3]); // => true
echo '
';
echo isContinuousSequence([10, 11, 12, 13]); // => true
echo '
';
echo isContinuousSequence([10, 11, 12, 14, 15]); // => false