--- a/templates3/bf.scala	Thu Oct 31 09:20:43 2019 +0000
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,151 +0,0 @@
-// Part 2 about an Interpreter for the Brainf*** language
-//========================================================
-
-object CW8b {
-
-type Mem = Map[Int, Int]
-
-// (2a) Complete the functions for safely reading  
-// and writing brainf*** memory. Safely read should
-// Return the value stored in the Map for a given memory
-// pointer, if it exists; otherwise it Returns 0. The
-// writing function generates a new Map with the
-// same data, except at the given memory pointer the
-// value v is stored.
-
-
-//def sread(mem: Mem, mp: Int) : Int = ...
-
-//def write(mem: Mem, mp: Int, v: Int) : Mem = ...
-
-
-// (2b) Implement the two jumping instructions in the 
-// brainf*** language. In jumpRight, given a program and 
-// a program counter move the counter to the right 
-// until the command after the *matching* ]-command. Similarly, 
-// jumpLeft implements the move to the left to just after
-// the *matching* [-command. The levels are used to find the
-// *matching* bracket.
-
-//def jumpRight(prog: String, pc: Int, level: Int) : Int = ...
-
-//def jumpLeft(prog: String, pc: Int, level: Int) : Int = ...
-
-
-
-// (2c) Complete the run function that interprets (runs) a brainf***
-// program: the arguments are a program, a program counter,
-// a memory counter and a brainf*** memory. It Returns the
-// memory at the stage when the execution of the brainf*** program
-// finishes. The interpretation finishes once the program counter
-// pc is pointing to something outside the program string.
-// If the pc points to a character inside the program, the pc, 
-// memory pointer and memory need to be updated according to 
-// rules of the brainf*** language. Then, recursively, the run 
-// function continues with the command at the new program
-// counter. 
-//
-// Implement the start function that calls run with the program
-// counter and memory counter set to 0.
-
-//def run(prog: String, pc: Int, mp: Int, mem: Mem) : Mem = ...
-
-//def start(prog: String, mem: Mem) = ...
-
-
-
-
-
-
-// some sample bf programs collected from the Internet
-//==================================================
-
-
-/*
-// first some contrived (small) programs
-
-// clears the 0-cell
-start("[-]", Map(0 -> 100)) 
-
-// copies content of the 0-cell to 1-cell
-start("[->+<]", Map(0 -> 10))
-
-// copies content of the 0-cell to 2-cell and 4-cell
-start("[>>+>>+<<<<-]", Map(0 -> 42))
-
-start("+++[>+++++<-]", Map(0 -> 10))
-
-
-// prints out numbers 0 to 9
-start("""+++++[->++++++++++<]>--<+++[->>++++++++++<<]>>++<<----------[+>.>.<+<]""", Map())
-
-
-// some more "useful" programs
-
-// hello world program 1
-start("""++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++
-       ..+++.>>.<-.<.+++.------.--------.>>+.>++.""", Map())
-
-// hello world program 2
-start("""++++++++++[>+++++++>++++++++++>+++>+<<<<-]>++.>+.+++++++..+++.>+
-      +.<<+++++++++++++++.>.+++.------.--------.>+.>.""", Map())
-
-
-// draws the Sierpinski triangle
-start("""++++++++[>+>++++<<-]>++>>+<[-[>>+<<-]+>>]>+[-<<<[
-      ->[+[-]+>++>>>-<<]<[<]>>++++++[<<+++++>>-]+<<++.[-]<<
-      ]>.>+[>>]>+]""", Map())
-
-//Fibonacci numbers below 100
-start("""+++++++++++
-      >+>>>>++++++++++++++++++++++++++++++++++++++++++++
-      >++++++++++++++++++++++++++++++++<<<<<<[>[>>>>>>+>
-      +<<<<<<<-]>>>>>>>[<<<<<<<+>>>>>>>-]<[>++++++++++[-
-      <-[>>+>+<<<-]>>>[<<<+>>>-]+<[>[-]<[-]]>[<<[>>>+<<<
-      -]>>[-]]<<]>>>[>>+>+<<<-]>>>[<<<+>>>-]+<[>[-]<[-]]
-      >[<<+>>[-]]<<<<<<<]>>>>>[+++++++++++++++++++++++++
-      +++++++++++++++++++++++.[-]]++++++++++<[->-<]>++++
-      ++++++++++++++++++++++++++++++++++++++++++++.[-]<<
-      <<<<<<<<<<[>>>+>+<<<<-]>>>>[<<<<+>>>>-]<-[>>.>.<<<
-      [-]]<<[>>+>+<<<-]>>>[<<<+>>>-]<<[<+>-]>[<+>-]<<<-]""", Map())
-
-
-//outputs the square numbers up to 10000
-start("""++++[>+++++<-]>[<+++++>-]+<+[
-    >[>+>+<<-]++>>[<<+>>-]>>>[-]++>[-]+
-    >>>+[[-]++++++>>>]<<<[[<++++++++<++>>-]+<.<[>----<-]<]
-    <<[>>>>>[>>>[-]+++++++++<[>-<-]+++++++++>[-[<->-]+[<<<]]<[>+<-]>]<<-]<<-]""", Map())
-
-
-//Collatz numbers (need to be typed in)
-start(""">,[[----------[
-      >>>[>>>>]+[[-]+<[->>>>++>>>>+[>>>>]++[->+<<<<<]]<<<]
-      ++++++[>------<-]>--[>>[->>>>]+>+[<<<<]>-],<]>]>>>++>+>>[
-      <<[>>>>[-]+++++++++<[>-<-]+++++++++>[-[<->-]+[<<<<]]<[>+<-]>]
-      >[>[>>>>]+[[-]<[+[->>>>]>+<]>[<+>[<<<<]]+<<<<]>>>[->>>>]+>+[<<<<]]
-      >[[>+>>[<<<<+>>>>-]>]<<<<[-]>[-<<<<]]>>>>>>>
-      ]>>+[[-]++++++>>>>]<<<<[[<++++++++>-]<.[-]<[-]<[-]<]<,]""", Map())
-
-
-// infinite Collatz (never stops)
-start(""">>+>+<[[->>[>>]>>>[>>]+[<<]<<<[<<]>[>[>>]>>+>[>>]<+<[<<]<<<[<
-      <]>-]>[>>]>>[<<<<[<<]>+>[>>]>>-]<<<<[<<]+>>]<<[+++++[>+++++++
-      +<-]>.<++++++[>--------<-]+<<]>>[>>]+[>>>>[<<+>+>-]<-[>+<-]+<
-      [<<->>-[<<+>>[-]]]>>>[<<<+<<+>>>>>-]<<<[>>>+<<<-]<<[[-]>+>>->
-      [<+<[<<+>>-]<[>+<-]<[>+<-]>>>>-]<[>+<-]+<[->[>>]<<[->[<+++>-[
-      <+++>-[<+++>-[<[-]++>>[-]+>+<<-[<+++>-[<+++>-[<[-]+>>>+<<-[<+
-      ++>-[<+++>-]]]]]]]]]<[>+<-]+<<]>>>+<[->[<+>-[<+>-[<+>-[<+>-[<
-      +>-[<+>-[<+>-[<+>-[<+>-[<[-]>>[-]+>+<<-[<+>-]]]]]]]]]]]<[>+<-
-      ]+>>]<<[<<]>]<[->>[->+>]<[-[<+>-[<->>+<-[<+>-[<->>+<-[<+>-[<-
-      >>+<-[<+>-[<->>+<-[<+>-[<->>+<-[<+>-[<->>+<-[<+>-[<->>+<-[<+>
-      -[<->>+<-[<+>-[<->>+<-[<+>-]]]]]]]]]]]]]]]]]]]>[<+>-]<+<[<+++
-      +++++++>-]<]>>[<+>->>]<<[>+>+<<-]>[<+>-]+>[<->[-]]<[-<<-]<<[<
-      <]]++++++[>+++++++<-]>++.------------.[-]>[>>]<<[+++++[>+++++
-      +++<-]>.<++++++[>--------<-]+<<]+<]>[<+>-]<]>>>[>>]<<[>[-]<-<
-      <]++++++++++.[-]<<<[<<]>>>+<[->[<+>-[<+>-[<+>-[<+>-[<+>-[<+>-
-      [<+>-[<+>-[<+>-[<[-]>>[-]+>+<<-]]]]]]]]]]<[>+<-]+>>]<<[<<]>>]""", Map())
-
-
-*/ 
-
-}