Update 0474.一和零.md about rust

problems/0474.一和零.md

@@ -491,6 +491,33 @@ object Solution {
 }
 ```
 
+### Rust
+
+```rust
+impl Solution {
+    pub fn find_max_form(strs: Vec<String>, m: i32, n: i32) -> i32 {
+        let (m, n) = (m as usize, n as usize);
+        let mut dp = vec![vec![0; n + 1]; m + 1];
+        for s in strs {
+            let (mut one_num, mut zero_num) = (0, 0);
+            for c in s.chars() {
+                match c {
+                    '0' => zero_num += 1,
+                    '1' => one_num += 1,
+                    _ => (),
+                }
+            }
+            for i in (zero_num..=m).rev() {
+                for j in (one_num..=n).rev() {
+                    dp[i][j] = dp[i][j].max(dp[i - zero_num][j - one_num] + 1);
+                }
+            }
+        }
+        dp[m][n]
+    }
+}
+```
+
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