public string Infiks2Prefiks(string expression)
{
char[] arr = expression.ToCharArray();
Array.Reverse(arr);
string temp = new string(arr);
string newtemp = "";
for (int i = 0; i < temp.Length; i++)
{
if (temp[i] == '(')
{
newtemp += ')';
}
else if (temp[i] == ')')
{
newtemp += '(';
}
else
{
newtemp += temp.ElementAt(i);
}
}
Steps.Add(new Step(newtemp, "Revers"));
Postfiks postfiks = new Postfiks(Steps);
string result = postfiks.Infiks2Postfiks(newtemp);
char[] arr1 = result.ToCharArray();
Array.Reverse(arr1);
string ReversResult = new string(arr1);
Steps.Add(new Step(ReversResult, "Revers"));
return(ReversResult);
}
private void TextBox_KeyDown(object sender, System.Windows.Input.KeyEventArgs e)
{
if (e.Key == Key.Enter)
{
Steps.Clear();
Infiks infiks = new Infiks(Steps);
Prefiks prefiks = new Prefiks(Steps);
Postfiks postfiks = new Postfiks(Steps);
if (Check(Expression.Text.ToString()))
{
if (BaseInfix.IsChecked == true)
{
if (!infiks.CheckInfix(Expression.Text.ToString()))
{
this.ShowMessageAsync("Error", "Incorrect infix structure");
}
else
{
if (GoalInfix.IsChecked == true)
{
Steps.Add(new Step(Expression.Text.ToString(), ""));
this.ShowMessageAsync("Info", "Base and Goal are the same");
}
else if (GoalPostfix.IsChecked == true)
{
postfiks.Infiks2Postfiks(Expression.Text.ToString());
}
else if (GoalPrefix.IsChecked == true)
{
prefiks.Infiks2Prefiks(Expression.Text.ToString());
}
else
{
this.ShowMessageAsync("Error", "Base and Goal error");
}
}
}
if (BasePostfix.IsChecked == true)
{
if (!prefiks.CheckPostfix(Expression.Text.ToString()))
{
this.ShowMessageAsync("Error", "Incorrect postfix structure");
}
else
{
if (GoalInfix.IsChecked == true)
{
infiks.Postfiks2Infiks(Expression.Text.ToString());
}
else if (GoalPostfix.IsChecked == true)
{
Steps.Add(new Step(Expression.Text.ToString(), ""));
this.ShowMessageAsync("Info", "Base and Goal are the same");
}
else if (GoalPrefix.IsChecked == true)
{
prefiks.Postfix2Prefix(Expression.Text.ToString());
}
else
{
this.ShowMessageAsync("Error", "Base and Goal error");
}
}
}
if (BasePrefix.IsChecked == true)
{
if (!prefiks.CheckPrefix(Expression.Text.ToString()))
{
this.ShowMessageAsync("Error", "Incorrect prefix structure");
}
else
{
if (GoalInfix.IsChecked == true)
{
infiks.Prefiks2Infiks(Expression.Text.ToString());
}
else if (GoalPostfix.IsChecked == true)
{
postfiks.Prefisk2Postfix(Expression.Text.ToString());
}
else if (GoalPrefix.IsChecked == true)
{
Steps.Add(new Step(Expression.Text.ToString(), ""));
this.ShowMessageAsync("Info", "Base and Goal are the same");
}
else
{
this.ShowMessageAsync("Error", "Base and Goal error");
}
}
}
}
else
{
this.ShowMessageAsync("Info", "Incorrect arithmetic expression");
}
StepsListView.Items.Refresh();
}
}
