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Task/Self-describing-numbers/FreeBASIC/self-describing-numbers.freebasic

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+' FB 1.05.0 Win64
+
+Function selfDescribing (n As UInteger) As Boolean
+   If n = 0 Then Return False
+   Dim ns As String = Str(n)
+   Dim count(0 To 9) As Integer '' all elements zero by default
+   While n > 0
+     count(n Mod 10) += 1
+     n \= 10
+   Wend
+   For i As Integer = 0 To Len(ns) - 1
+     If ns[i] - 48 <> count(i) Then Return False '' numerals have ascii values from 48 to 57
+   Next
+   Return True
+End Function
+
+Print "The self-describing numbers less than 100 million are:"
+For i As Integer = 0 To 99999999
+  If selfDescribing(i) Then Print i; " ";
+Next
+Print
+Print "Press any key to quit"
+Sleep