From d59bc2ee161e1ca76642a72cfabd83f8f4218589 Mon Sep 17 00:00:00 2001
From: cezarbbb <105843128+cezarbbb@users.noreply.github.com>
Date: Thu, 21 Jul 2022 10:33:02 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=200046.=E5=85=A8=E6=8E=92?=
 =?UTF-8?q?=E5=88=97=20Rust=E7=89=88=E6=9C=AC?=
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添加 0046.全排列 Rust版本
---
 problems/0046.全排列.md | 30 ++++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/problems/0046.全排列.md b/problems/0046.全排列.md
index 06e1550a..ce07395a 100644
--- a/problems/0046.全排列.md
+++ b/problems/0046.全排列.md
@@ -359,6 +359,36 @@ function permute(nums: number[]): number[][] {
 };
 ```
 
+### Rust
+
+```Rust
+impl Solution {
+    fn backtracking(result: &mut Vec<Vec<i32>>, path: &mut Vec<i32>, nums: &Vec<i32>, used: &mut Vec<bool>) {
+        let len = nums.len();
+        if path.len() == len {
+            result.push(path.clone());
+            return;
+        }
+        for i in 0..len {
+            if used[i] == true { continue; }
+            used[i] = true;
+            path.push(nums[i]);
+            Self::backtracking(result, path, nums, used);
+            path.pop();
+            used[i] = false;
+        }
+    }
+
+    pub fn permute(nums: Vec<i32>) -> Vec<Vec<i32>> {
+        let mut result: Vec<Vec<i32>> = Vec::new();
+        let mut path: Vec<i32> = Vec::new();
+        let mut used = vec![false; nums.len()];
+        Self::backtracking(&mut result, &mut path, &nums, &mut used);
+        result
+    }
+}
+```
+
 ### C
 
 ```c