在数组vb.net 2005上检测重复数字的最快方法 [英] Fastest way to detect duplicate numbers on array vb.net 2005

问题描述

我有一个项目，允许用户输入1到50之间的5个不同数字.但是我想在保存到数据库之前验证它，我将是5个唯一数字.最好和最快的方法是什么?

I have this project that let user inputs 5 different numbers from 1 to 50. But I want to validate it before saving to DB that i will be 5 unique numbers. What's the best and fastest way to do this?

推荐答案

检查此代码

Private Function HasDuplicates(ByVal arr As Array) As Boolean
    For i As Integer = 0 To arr.Length - 1
        If Not arr(i) Is Nothing Then
            Dim l As Integer = Array.LastIndexOf(arr, arr(i))
            If l <> i Then Return True
        End If
    Next
    Return False
End Function

这篇关于在数组vb.net 2005上检测重复数字的最快方法的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！