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Public Class Form1
Dim dico As New Dictionary(Of String, String)
Sub New()
' Cet appel est requis par le concepteur.
InitializeComponent()
For i As Integer = 1 To 5000
dico.Add(i.ToString, i.ToString & i.ToString)
Next
End Sub
Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
Me.Text = ""
Dim s As String = "hazhe azeji jiazoe2 jiazjiej az1je i"
Dim ch As New System.Diagnostics.Stopwatch
ch.Start()
For Each k As String In dico.Keys
If s.Contains(k) Then s = s.Replace(k, dico(k))
Next
ch.Stop()
Me.Text &= ch.ElapsedMilliseconds & " "
ch.Reset()
ch.Start()
For Each k As String In dico.Keys
s = s.Replace(k, dico(k))
Next
ch.Stop()
Me.Text &= ch.ElapsedMilliseconds & " "
ch.Reset()
ch.Start()
Dim sb As New System.Text.StringBuilder
sb.Append(s)
For Each k As String In dico.Keys
sb.Replace(k, dico(k))
Next
ch.Stop()
Me.Text &= ch.ElapsedMilliseconds
End Sub
End Class |
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