Define a function in Scheme or relation in Prolog called parity that does the following If the number is positive, add 1 to the total . If the number is negative, add -1 to the total . If the number is O or the list is empty, then add 0 to the total Return the total of adding 1 and -1
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- Write a function in Prolog called isPair.The function should take an array/list of values. It should return true if the list has pairs of equal numbers and false if not. For example, isPair([1,1,2,2,3,3]) is and isPair([1,1,1,1]) is true and isPair([5,5,5]) is false. no hand written. avoid plagiarism Write a rule in Prolog called hailstone(x) that, given a positive integer x, returns the number of elements in the hailstone sequence starting with that x. So, for example, for n=35, the function would return 14.*Needs to be done in Scheme* Assume you have the MSRP of multiple cars: a) BMW M5 is $71095 b) BMW Z4 is $40495 c) Jaguar XJ8 is $56975 d) MB SL500 is $86655; having this information answer the following questions: 1) make an association list in Scheme and query the prices of each cars 2) if this was a very large list, what would be the time complexity to search it ? how would you solve this issue?
- subject : Discrete Structures Replace all the 0 (Zero) digits in your ID by 4. Example: If your ID is 38104680, it becomes 38144684 Take the first 6 digits and substitute them in this expression (( A + B) / C) * ((D-E)/F)-2) according to the following table; Letter Replace by Digit Example Digit A 1st 1 B 2nd 2 C 3rd 4 D 4th 6 E 5th 8 F 6th 2 After substitution your expression will be similar to this (( 1 + 2) / 4) * ((6-8)/2)-2). 1.Draw a rooted tree that represents your expression. 2.What is the prefix form of this expression. 3.What is the value of the prefix expression obtained in step 2 above?Computer Science In Racket, write a recursive function called "first-index" that returns only the first index of the specified element in a list. Ex : (first-index '1 '(3 5 1 4 5 2 1)) Would return 3 The function must take 2 arguments, the item you wish to find its index and a listPython Need help with code A rule has three parts: •name –a simple name for the rule (e.g., up, left, down, right) •precondition function –a Boolean function that accepts a state and returns true if the rule is applicable to state •action function –a function that accepts a state and returns the successor state obtained by applying the rule. You can use these rules to implement functions such as applicable-rule, which returns a list of the rules applicable to a given state, and successor-state, which returns the successor state for a given state and rule. Question: Encode the rules for the sliding-tile puzzle. Remember that it is easiest to consider moving the empty space up, left, down, or right. Using these rules, write routines to determine the rules applicable to a state and the successor state given a state and rule to apply. Note that you could implement these as iterators or have them return lists (or vectors) or rules and states.
- def optimize_tail_calls(original_scheme_eval): """Return a properly tail recursive version of an eval function.""" def optimized_eval(expr, env, tail=False): """Evaluate Scheme expression EXPR in Frame ENV. If TAIL, return an Unevaluated containing an expression for further evaluation. """ if tail and not scheme_symbolp(expr) and not self_evaluating(expr): return Unevaluated(expr, env) result = Unevaluated(expr, env) # fill in code code here while isinstance(result, Unevaluated): #code here return optimized_eval scheme_eval = optimize_tail_calls(scheme_eval)Recursive Syntax The recursive structure i.e of natural language like English can be expressed in syntax rules written in the format known as BNF (Bachus-Naur Form). While BNF is ordinarily used as a guide for parsing (that is, determining whether and how a given string follows the syntax rules), An example of this can be found in the sample program SimpleRandomSentences. You should write a similar program that implements the following rules:<sentence> ::= <simple_sentence> [ <conjunction> <sentence> ]<simple_sentence> ::= <noun_phrase> <verb_phrase><noun_phrase> ::= <proper_noun> |<determiner> [ <adjective> ]. <common_noun> [ who <verb_phrase> ]<verb_phrase> ::= <intransitive_verb> |<transitive_verb> <noun_phrase> |is <adjective> |believes that <simple_sentence><conjunction> ::= and | or | but | because<proper_noun> ::= Fred | Jane | Richard Nixon | Miss…In programming language c Write the difference between structure and arrays. Also discuss a scenario where using a structure will be more appropriate with explanation.
- Recursive Descent subprogram with EBNF rule, using C or Java syntax (syntax) Type (Recursive-Descent Subprogram): -> while () ; The lex method to be used reads a single lexeme, and the lexemes' token code is in the nextToken variable is to the left. Suppose that the defined tokens are respectively: while - WHILE_CODE left parantex - LEFTPAREN_CODE right parenthesis - RIGHTPAREN_CODE semicolon - SEMICOLON_CODE If any error is caught, create the function that calls the error function.Write C# linq syntax to get first student name where age is more then 18 from List<Student>. Please provide linq syntax only Student has below properties Id, Name, Age, Classc programming Task 3: Complete armstrong_task3.c by implementing armstrong_recursive function. int armstrong_recursive (int arm); It performs same operation as in Task 1, however in a recursive manner. A number to be checked whether it is armstrong or not is given as an input and the function returns the summation of the digits. If the returned value is equal to the given input value then it is an armstrong number.