feat: add rust solution to lc problem: No.2300 (#4377)

No.2300.Successful Pairs of Spells and Potions

Author: yanglbme

solution/2300-2399/2300.Successful Pairs of Spells and Potions/README.md

@@ -170,6 +170,29 @@ function successfulPairs(spells: number[], potions: number[], success: number):
 }
 ```
 
+#### Rust
+
+```rust
+impl Solution {
+    pub fn successful_pairs(spells: Vec<i32>, mut potions: Vec<i32>, success: i64) -> Vec<i32> {
+        potions.sort();
+        let m = potions.len();
+
+        spells.into_iter().map(|v| {
+            let i = potions.binary_search_by(|&p| {
+                let prod = (p as i64) * (v as i64);
+                if prod >= success {
+                    std::cmp::Ordering::Greater
+                } else {
+                    std::cmp::Ordering::Less
+                }
+            }).unwrap_or_else(|x| x);
+            (m - i) as i32
+        }).collect()
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->

solution/2300-2399/2300.Successful Pairs of Spells and Potions/README_EN.md

@@ -170,6 +170,29 @@ function successfulPairs(spells: number[], potions: number[], success: number):
 }
 ```
 
+#### Rust
+
+```rust
+impl Solution {
+    pub fn successful_pairs(spells: Vec<i32>, mut potions: Vec<i32>, success: i64) -> Vec<i32> {
+        potions.sort();
+        let m = potions.len();
+
+        spells.into_iter().map(|v| {
+            let i = potions.binary_search_by(|&p| {
+                let prod = (p as i64) * (v as i64);
+                if prod >= success {
+                    std::cmp::Ordering::Greater
+                } else {
+                    std::cmp::Ordering::Less
+                }
+            }).unwrap_or_else(|x| x);
+            (m - i) as i32
+        }).collect()
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->

solution/2300-2399/2300.Successful Pairs of Spells and Potions/Solution.rs

@@ -0,0 +1,23 @@
+impl Solution {
+    pub fn successful_pairs(spells: Vec<i32>, mut potions: Vec<i32>, success: i64) -> Vec<i32> {
+        potions.sort();
+        let m = potions.len();
+
+        spells
+            .into_iter()
+            .map(|v| {
+                let i = potions
+                    .binary_search_by(|&p| {
+                        let prod = (p as i64) * (v as i64);
+                        if prod >= success {
+                            std::cmp::Ordering::Greater
+                        } else {
+                            std::cmp::Ordering::Less
+                        }
+                    })
+                    .unwrap_or_else(|x| x);
+                (m - i) as i32
+            })
+            .collect()
+    }
+}