0046.全排列.md Javascript

problems/0046.全排列.md

@@ -188,6 +188,33 @@ Python：
 
 Go：
 
+Javascript:
+```Javascript
+
+var permute = function(nums) {
+    let result = []
+    let path = []
+    function backtracing(used) {
+        if(path.length === nums.length) {
+            result.push(path.slice(0))
+            return
+        }
+        for(let i = 0; i < nums.length; i++) {
+            if(used[nums[i]]) {
+                continue
+            }
+            used[nums[i]] = true
+            path.push(nums[i])
+            backtracing(used)
+            path.pop()
+            used[nums[i]] = false
+        }
+    }
+    backtracing([])
+    return result
+};
+
+```