Update 背包理论基础01背包-2.md about rust

problems/背包理论基础01背包-2.md

@@ -406,6 +406,34 @@ object Solution {
 }
 ```
 
+### Rust
+
+```rust
+pub struct Solution;
+
+impl Solution {
+    pub fn wei_bag_problem2(weight: Vec<usize>, value: Vec<usize>, bag_size: usize) -> usize {
+        let mut dp = vec![0; bag_size + 1];
+        for i in 0..weight.len() {
+            for j in (weight[i]..=bag_size).rev() {
+                if j >= weight[i] {
+                    dp[j] = dp[j].max(dp[j - weight[i]] + value[i]);
+                }
+            }
+        }
+        dp[dp.len() - 1]
+    }
+}
+
+#[test]
+fn test_wei_bag_problem2() {
+    println!(
+        "{}",
+        Solution::wei_bag_problem1(vec![1, 3, 4], vec![15, 20, 30], 4)
+    );
+}
+```
+
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