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TH-coder · Mar 18, 2019 · afc3583 · afc3583
1 parent 95a4f38
commit afc3583
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diff --git a/3 - 旋转数组(189)/index.html b/3 - 旋转数组(189)/index.html
@@ -0,0 +1,10 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <title>Title</title>
+</head>
+<body>
+<script src="index.js"></script>
+</body>
+</html>
diff --git a/3 - 旋转数组(189)/index.js b/3 - 旋转数组(189)/index.js
@@ -0,0 +1,36 @@
+var rotate1 = function (nums, k) {
+    for (let i = 0; i < k; i++) {
+        const num = nums.pop();
+        nums.unshift(num)
+    }
+};
+
+
+var rotate2 = function (nums, k) {
+    const length = nums.length;
+    if (length === k || length === 1) {
+        return nums
+    } else {
+        if (length < k) {
+            k = k % length
+        }
+        nums.unshift(...nums.splice(-k, k));
+    }
+};
+
+var rotate3 = function (nums, k) {
+    let l = nums.length;
+    k %= l;
+    nums.unshift(...nums.splice(nums.length - k, k))
+};
+
+const arr1 = [1, 2, 3, 4, 5, 6, 7];
+const arr2 = [1, 2, 3, 4, 5, 6, 7];
+const arr3 = [1, 2, 3, 4, 5, 6, 7];
+const k = 3;
+rotate1(arr1,k)
+rotate2(arr2,k);
+rotate3(arr3,k);
+console.log(arr1);
+console.log(arr2);
+console.log(arr3);