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4 Generalized Printing You are tasked with creating generalized list printing functions. Write a function called print GenList which takes a list and a printing function f and applies the function to each element of the list recursively. The function should have the following type signature: val print GenList : 'a list -> ('a -> unit) -> unit Create a function called printList that will pretty print an integer list. You will find the string concatenation operator (^) and the string_of_int function useful. printList will take an integer 3 list followed by a string. The string is the name of the output file that you will write the list to. This function should leverage printGenList and provide an anonymous function (the fun ... ->... construct) that will do the appropriate pretty printing to the output file. This anonymous function should print the element of the list and then a space character. printList should have the following type signature: val printList: int list -> string -> unit Create a function called printPairList that will pretty print a list consisting of integer pairs. The function will take an (int * int) list followed by a string. The string is the name of the output file that you will write the list to. printPairList should leverage print GenList and provide an anonymous function (the fun ... ->... construct) that will do the appropriate pretty printing. This anonymous function should print an open parenthesis, the first element of the pair, a comma, a space, the second element of the pair, and then a close parenthesis followed by a space. printPairList should have the following type signature: val printPairList : (int * int) list -> string -> unit

4 Generalized Printing You are tasked with creating generalized list printing functions. Write a function called print GenList which takes a list and a printing function f and applies the function to each element of the list recursively. The function should have the following type signature: val print GenList : 'a list -> ('a -> unit) -> unit Create a function called printList that will pretty print an integer list. You will find the string concatenation operator (^) and the string_of_int function useful. printList will take an integer 3 list followed by a string. The string is the name of the output file that you will write the list to. This function should leverage printGenList and provide an anonymous function (the fun ... ->... construct) that will do the appropriate pretty printing to the output file. This anonymous function should print the element of the list and then a space character. printList should have the following type signature: val printList: int list -> string -> unit Create a function called printPairList that will pretty print a list consisting of integer pairs. The function will take an (int * int) list followed by a string. The string is the name of the output file that you will write the list to. printPairList should leverage print GenList and provide an anonymous function (the fun ... ->... construct) that will do the appropriate pretty printing. This anonymous function should print an open parenthesis, the first element of the pair, a comma, a space, the second element of the pair, and then a close parenthesis followed by a space. printPairList should have the following type signature: val printPairList : (int * int) list -> string -> unit

C++ for Engineers and Scientists
C++ for Engineers and Scientists
4th Edition
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Bronson, Gary J.
Chapter7: Arrays
Section7.5: Case Studies
Problem 3E
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4 Generalized Printing You are tasked with creating generalized list printing functions. Write a function called printGenList which takes a list and a printing function f and applies the function to each element of the list recursively. The function should have the following type signature: val print GenList : 'a list -> ('a -> unit) -> unit Create a function called printList that will pretty print an integer list. You will find the string concatenation operator (^) and the string_of_int function useful. printList will take an integer 3 list followed by a string. The string is the name of the output file that you will write the list to. This function should leverage printGenList and provide an anonymous function (the fun ... ->... construct) that will do the appropriate pretty printing to the output file. This anonymous function should print the element of the list and then a space character. printList should have the following type signature: val printList int list -> string -> unit Create a function called printPairList that will pretty print a list consisting of integer pairs. The function will take an (int * int) list followed by a string. The string is the name of the output file that you will write the list to. printPairList should leverage printGenList and provide an anonymous function (the fun ... ->... construct) that will do the appropriate pretty printing. This anonymous function should print an open parenthesis, the first element of the pair, a comma, a space, the second element of the pair, and then a close parenthesis followed by a space. printPairList should have the following type signature: val printPairList : (int int) list -> string -> unit
Transcribed Image Text:4 Generalized Printing You are tasked with creating generalized list printing functions. Write a function called printGenList which takes a list and a printing function f and applies the function to each element of the list recursively. The function should have the following type signature: val print GenList : 'a list -> ('a -> unit) -> unit Create a function called printList that will pretty print an integer list. You will find the string concatenation operator (^) and the string_of_int function useful. printList will take an integer 3 list followed by a string. The string is the name of the output file that you will write the list to. This function should leverage printGenList and provide an anonymous function (the fun ... ->... construct) that will do the appropriate pretty printing to the output file. This anonymous function should print the element of the list and then a space character. printList should have the following type signature: val printList int list -> string -> unit Create a function called printPairList that will pretty print a list consisting of integer pairs. The function will take an (int * int) list followed by a string. The string is the name of the output file that you will write the list to. printPairList should leverage printGenList and provide an anonymous function (the fun ... ->... construct) that will do the appropriate pretty printing. This anonymous function should print an open parenthesis, the first element of the pair, a comma, a space, the second element of the pair, and then a close parenthesis followed by a space. printPairList should have the following type signature: val printPairList : (int int) list -> string -> unit
5 Example output for the entire homework Note that print List and printPairList must print to the output file, we show the contents of the file as string for example only. even 2;; - bool = true even 3;; - bool= false odd 2;; - bool = false odd 3;; - bool = true take 10 squares;; - int list = [1; 4; 9; 16; 25; 36; 49; 64; 81; 100] take 10 fibs;; - : int list = [0; 1; 1; 2; 3; 5; 8; 13; 21; 34] take 10 evenFibs;; - int list = [0; 2; 8; 34; 144; 610; 2584; 10946; 46368; 196418] take 10 oddFibs;; - int list = [1; 1; 3; 5; 13; 21; 55; 89; 233; 377] take 10 primes;; - int list = [2; 3; 5; 7; 11; 13; 17; 19; 23; 29] take 5 (rev_zip_diff evenFibs oddFibs (fun (x,y) -> x - y)) ;; (int int * int) list= [(1, 0, 1); (1, 2, -1); (3, 8, -5); (5, 34, -29); (13, 144, -131)] printGenList["how"; "the"; "turntables"] (fun s -> print_string (s^ " ")) ;; how the turntables: unit = () printList [2; 4; 6; 8] "printList.txt";; (* "2 4 6 8 " *) printPairList [(2, 1); (3, 2); (4, 3)] "printPairList.txt";; (* "(2, 1) (3, 2) (4, 3) " *)
Transcribed Image Text:5 Example output for the entire homework Note that print List and printPairList must print to the output file, we show the contents of the file as string for example only. even 2;; - bool = true even 3;; - bool= false odd 2;; - bool = false odd 3;; - bool = true take 10 squares;; - int list = [1; 4; 9; 16; 25; 36; 49; 64; 81; 100] take 10 fibs;; - : int list = [0; 1; 1; 2; 3; 5; 8; 13; 21; 34] take 10 evenFibs;; - int list = [0; 2; 8; 34; 144; 610; 2584; 10946; 46368; 196418] take 10 oddFibs;; - int list = [1; 1; 3; 5; 13; 21; 55; 89; 233; 377] take 10 primes;; - int list = [2; 3; 5; 7; 11; 13; 17; 19; 23; 29] take 5 (rev_zip_diff evenFibs oddFibs (fun (x,y) -> x - y)) ;; (int int * int) list= [(1, 0, 1); (1, 2, -1); (3, 8, -5); (5, 34, -29); (13, 144, -131)] printGenList["how"; "the"; "turntables"] (fun s -> print_string (s^ " ")) ;; how the turntables: unit = () printList [2; 4; 6; 8] "printList.txt";; (* "2 4 6 8 " *) printPairList [(2, 1); (3, 2); (4, 3)] "printPairList.txt";; (* "(2, 1) (3, 2) (4, 3) " *)
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