diff --git "a/lcp/LCP 18. \346\227\251\351\244\220\347\273\204\345\220\210/README.md" "b/lcp/LCP 18. \346\227\251\351\244\220\347\273\204\345\220\210/README.md"
index c04eb85dcb523..f57903fb90c8f 100644
--- "a/lcp/LCP 18. \346\227\251\351\244\220\347\273\204\345\220\210/README.md"	
+++ "b/lcp/LCP 18. \346\227\251\351\244\220\347\273\204\345\220\210/README.md"	
@@ -187,6 +187,37 @@ func breakfastNumber(staple []int, drinks []int, x int) int {
 }
 ```
 
+#### Swift
+
+```swift
+class Solution {
+    func breakfastNumber(_ staple: [Int], _ drinks: [Int], _ x: Int) -> Int {
+        let mod = 1000000007
+        var result = 0
+        let sortedDrinks = drinks.sorted()
+
+        for s in staple {
+            let remaining = x - s
+            if remaining >= sortedDrinks.first ?? 0 {
+                var left = 0
+                var right = sortedDrinks.count - 1
+
+                while left < right {
+                    let mid = (left + right + 1) / 2
+                    if sortedDrinks[mid] <= remaining {
+                        left = mid
+                    } else {
+                        right = mid - 1
+                    }
+                }
+                result = (result + left + 1) % mod
+            }
+        }
+        return result
+    }
+}
+```
+
 <!-- tabs:end -->
 
 <!-- solution:end -->
diff --git "a/lcp/LCP 18. \346\227\251\351\244\220\347\273\204\345\220\210/Solution.swift" "b/lcp/LCP 18. \346\227\251\351\244\220\347\273\204\345\220\210/Solution.swift"
new file mode 100644
index 0000000000000..f126c14fafca0
--- /dev/null
+++ "b/lcp/LCP 18. \346\227\251\351\244\220\347\273\204\345\220\210/Solution.swift"	
@@ -0,0 +1,26 @@
+class Solution {
+    func breakfastNumber(_ staple: [Int], _ drinks: [Int], _ x: Int) -> Int {
+        let mod = 1000000007
+        var result = 0
+        let sortedDrinks = drinks.sorted()
+        
+        for s in staple {
+            let remaining = x - s
+            if remaining >= sortedDrinks.first ?? 0 {
+                var left = 0
+                var right = sortedDrinks.count - 1
+                
+                while left < right {
+                    let mid = (left + right + 1) / 2
+                    if sortedDrinks[mid] <= remaining {
+                        left = mid
+                    } else {
+                        right = mid - 1
+                    }
+                }
+                result = (result + left + 1) % mod
+            }
+        }
+        return result
+    }
+}
\ No newline at end of file