v3_1

internal/pkg/sliceutil/sliceutil.go

@@ -0,0 +1,31 @@
+package sliceutil
+
+import "sort"
+
+// 使用 map 去除重复元素
+func RemoveDuplicatesWithMap[T comparable](slice []T) []T {
+	result := make([]T, 0, len(slice))
+	seen := make(map[T]bool)
+	for _, v := range slice {
+		if _, ok := seen[v]; !ok {
+			seen[v] = true
+			result = append(result, v)
+		}
+	}
+	return result
+}
+
+// 先排序再去重
+func RemoveDuplicatesWithSort(slice []int) []int {
+	if len(slice) == 0 {
+		return slice
+	}
+	sort.Ints(slice)
+	result := []int{slice[0]}
+	for i := 1; i < len(slice); i++ {
+		if slice[i] != slice[i-1] {
+			result = append(result, slice[i])
+		}
+	}
+	return result
+}