diff --git a/codes/csharp/chapter_sorting/bucket_sort.cs b/codes/csharp/chapter_sorting/bucket_sort.cs
index ab02924df..6b6d0de48 100644
--- a/codes/csharp/chapter_sorting/bucket_sort.cs
+++ b/codes/csharp/chapter_sorting/bucket_sort.cs
@@ -18,7 +18,7 @@ public class bucket_sort {
         // 1. 将数组元素分配到各个桶中
         foreach (float num in nums) {
             // 输入数据范围 [0, 1)，使用 num * k 映射到索引范围 [0, k-1]
-            int i = (int)num * k;
+            int i = (int) (num * k);
             // 将 num 添加进桶 i
             buckets[i].Add(num);
         }
diff --git a/codes/go/chapter_sorting/bucket_sort.go b/codes/go/chapter_sorting/bucket_sort.go
index 32ce56fb4..af4206fe0 100644
--- a/codes/go/chapter_sorting/bucket_sort.go
+++ b/codes/go/chapter_sorting/bucket_sort.go
@@ -17,7 +17,7 @@ func bucketSort(nums []float64) {
 	// 1. 将数组元素分配到各个桶中
 	for _, num := range nums {
 		// 输入数据范围 [0, 1)，使用 num * k 映射到索引范围 [0, k-1]
-		i := int(num) * k
+		i := int(num * float64(k))
 		// 将 num 添加进桶 i
 		buckets[i] = append(buckets[i], num)
 	}
diff --git a/codes/java/chapter_sorting/bucket_sort.java b/codes/java/chapter_sorting/bucket_sort.java
index cc3f5938e..e47ed40f1 100644
--- a/codes/java/chapter_sorting/bucket_sort.java
+++ b/codes/java/chapter_sorting/bucket_sort.java
@@ -20,7 +20,7 @@ public class bucket_sort {
         // 1. 将数组元素分配到各个桶中
         for (float num : nums) {
             // 输入数据范围 [0, 1)，使用 num * k 映射到索引范围 [0, k-1]
-            int i = (int) num * k;
+            int i = (int) (num * k);
             // 将 num 添加进桶 i
             buckets.get(i).add(num);
         }
diff --git a/codes/swift/chapter_sorting/bucket_sort.swift b/codes/swift/chapter_sorting/bucket_sort.swift
index 1967695c9..5da508414 100644
--- a/codes/swift/chapter_sorting/bucket_sort.swift
+++ b/codes/swift/chapter_sorting/bucket_sort.swift
@@ -12,7 +12,7 @@ func bucketSort(nums: inout [Double]) {
     // 1. 将数组元素分配到各个桶中
     for num in nums {
         // 输入数据范围 [0, 1)，使用 num * k 映射到索引范围 [0, k-1]
-        let i = Int(num) * k
+        let i = Int(num * k)
         // 将 num 添加进桶 i
         buckets[i].append(num)
     }