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Update isSorted.md

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刘家轶
2020-04-08 21:04:59 +08:00
committed by GitHub
parent 09a8ba5219
commit 49a84e6699
1 changed files with 2 additions and 2 deletions
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snippets/isSorted.md
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@ -14,7 +14,7 @@ const isSorted = arr => {
let direction = -(arr[0] - arr[1]); let direction = -(arr[0] - arr[1]);
for (let [i, val] of arr.entries()) { for (let [i, val] of arr.entries()) {
direction = !direction ? -(arr[i - 1] - arr[i]) : direction; direction = !direction ? -(arr[i - 1] - arr[i]) : direction;
if (i === arr.length - 1) return !direction ? 0 : direction; if (i === arr.length - 1) return !direction ? 0 : direction / Math.abs(direction);
else if ((val - arr[i + 1]) * direction > 0) return 0; else if ((val - arr[i + 1]) * direction > 0) return 0;
} }
}; };
@ -24,4 +24,4 @@ const isSorted = arr => {
isSorted([0, 1, 2, 2]); // 1 isSorted([0, 1, 2, 2]); // 1
isSorted([4, 3, 2]); // -1 isSorted([4, 3, 2]); // -1
isSorted([4, 3, 5]); // 0 isSorted([4, 3, 5]); // 0
``` ```