Merge pull request #2086 from fwqaaq/patch-43

Update 0494.目标和.md about rust

problems/0494.目标和.md

@@ -417,6 +417,31 @@ object Solution {
 }
 ```
 
+### Rust
+
+```rust
+impl Solution {
+    pub fn find_target_sum_ways(nums: Vec<i32>, target: i32) -> i32 {
+        let sum = nums.iter().sum::<i32>();
+        if target.abs() > sum {
+            return 0;
+        }
+        if (target + sum) % 2 == 1 {
+            return 0;
+        }
+        let size = (sum + target) as usize / 2;
+        let mut dp = vec![0; size + 1];
+        dp[0] = 1;
+        for n in nums {
+            for s in (n as usize..=size).rev() {
+                dp[s] += dp[s - n as usize];
+            }
+        }
+        dp[size]
+    }
+}
+```
+
 <p align="center">
 <a href="https://programmercarl.com/other/kstar.html" target="_blank">
   <img src="../pics/网站星球宣传海报.jpg" width="1000"/>