segmentfault.com
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- 每日一练(1)：
function defaultComparator (a, b) {
return a - b;
}
module.exports = function checkSort (array, comparator) {
if ( !Array.isArray (array)) throw new TypeError('Expected Array, got' + (typeof array))
comparator = comparator || defaultComparator
for (var i = 1, length = array.length; i < length; ++i) {
if (comparator(array[i-1], array[i]) > 0 ) return false
}
return true;
}展开评论点赞
