2- Write a prolog program to take a nested list and return the number of elements in the list. For instance ?- elements ([b, [a, [d, c], e]], X). X = 5 Please also show tracing model for the above example

2- Write a prolog program to take a nested list and return the number of elements in the list. For instance ?- elements ([b, [a, [d, c], e]], X). X = 5 Please also show tracing model for the above example

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

See similar textbooks

Related questions

Q: Write a recursive Lisp function that for the power function. You do not need to compile it. Just…

A: Define a function named "power" with two parameters "base" and "exponent". If the exponent is equal…

Q: For function sumtok, write the missing recursive call. This function returns the sum of the values…

A: Introduction: In Java, a method that calls itself is referred to as a recursive method. This is…

Q: Write a recursive function flatten that takes a list as an argument and returns the flat version of…

A: Here is the detailed explanation of the solution

Q: Write a recursive function elemAt that returns the ith item of the list, where the first item is…

A: The elemAt function takes two arguments: an integer i representing the index of the element to…

Q: In C program Write a recursive function add(m,n)that computes the sum of its two integer…

A: #include<stdio.h>int sum(int a,int b) // recursive function definition{if(b!=0){return…

Q: 4- Write a Scheme procedure that takes a list and returns the sum of the even numbers that are less…

A: Python In recent times, Python has grown to become among the most widely used programming languages…

Q: True/False 5. All proper recursive definitions must have exactly one non-recursive base case.

A: Lets see the solution in the next steps

Q: rite a procedure (intercalate sep lst) where sep is a string and lst s a list of strings that…

A: Python code :- sep=("I","Love","functional","programming")x=" ".join (sep)print (x)…

Q: Write a recursive function that takes a number n and a list num_list as inputs, then determines…

A: Given: Write a recursive function that takes a number n and a list num_list as inputs, then…

Q: Exercis • Derive a recursive Python function to create a list containing the values ranging from 0…

Q: What is the return value of the function call Comp(4, 5), given the recursive function Comp defined…

A: INTRODUCTION: A recursive function is a routine that calls itself repeatedly, either directly or…

Q: Finish the 2 "TODO" in the ASM Language! A palindrome is a word that is spelled the same way…

A: Program is given below with explaination

Q: Comp(3, 4), given the recursive function Comp defined below: int Comp(int a,

A: Dear Student, The answer to your question is given below -

Q: Working with Lists

A: A required Python program is as follows, File name: “threeLists.py” # a)List comprehension of…

Q: Write a recursive function to see if the first letter matches the last letter, return the middle…

A: def firstCharacter(str): return str[:1] # Returns the last character of a string strdef…

Q: In Kotliln, Write a recursive linear search function that takes a String and a Char and returns true…

A: 1. Function Definition: Define a function `isCharInString` that takes two parameters: `inputString`…

Q: def optimize_tail_calls(original_scheme_eval): """Return a properly tail recursive version of an…

A: Tail Recursion # A tail call is a call expression in a tail context:# The last body sub-expression…

Q: How would I write double_str and double_list using only recursion functions?

A: def double_str(s): if len(s)>0: print(s[0]*2,end="") return…

Concept explainers

Time Complexity

In computer science, the computational complexity that is measured in terms of time is referred to as time complexity that defines how long it takes a computer to execute an algorithm. An algorithm's time complexity is measured by the the amount of time required to execute each statement of code in the algorithm. If a statement is set to execute repetitively, the number of times it will be N multiplied by the time it takes to run that function each time is equal .

Question

2- Write a prolog program to take a nested list and return the number of elements
in the list. For instance
?- elements ([b, [a, [d, c], e]], X).
X = 5
Please also show tracing model for the above example

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.

Similar questions

In kotlin, Write a recursive function with an expression body that takes a list of Pairs in which each value may be of any type, and returns a list of the first elements from each pair.
in kotlin Write two versions of a recursive palindrome check function. One version should have a block body, and the other should have an expression body. Review the lecture slide about the substring function first. Use this algorithm: if the length of the string is less than 2, return true else if the first and last characters are not equal (!=) return false else return the result of a recursive call with the substring from the second character (the one at index 1) to the second to last character. Use a main that uses a loop to test the palindrome function using this list of strings: val ss = listOf("", "A", "AA", "AB", "AAA", "ABA", "ABB", "AAAA", "AABA", "ABBA", "ABCBA", "ABCAB")
C programming language
Theory of computation: Write a program using c++ and pseudo code to check if the entering value following the grammar or not without checking if the grammar is left recursion or not: E ---> E + T | T T---> T * F | F F---> (E) | i Thanks in advance ( I hope you solve it fast with the right answer if you can't solve it leave it please! )
Write a recursive function that displays a string reversely on the console using the following header: def reverseDisplay(value):For example, reverseDisplay("abcd") displays dcba. Write a test programthat prompts the user to enter a string and displays its reversal.
part 1. draw the recursive call tree for the following function when its called with a(7) int a (int n) { if (n % 4== 0) { return n+1;} else { return a(n-1) + a (n*4); } } part 2. what is the returning value?
What does the following C program function do? int more_recursive_fun(const char *s, char t) { if (s[0] == '\0') { return 0; } else if (s[0] == t) { return 1 + more_recursive_fun(s + 1, t); } else { return more_recursive_fun(s + 1, t); } }
Practice recursion on lists Practice multiple base conditions Combine recursion call with and,or not operators Search for an element in a list using recursion Instructions In this lab, we will write a recursive function for searching a list of integers/strings. Write a recursive function to determine if a list contains an element. Name the function recursive_search(aList, value), where aList is a list and value if primitive type is the object we want to search for. Return a boolean, specifically True if and only if value is an element of aList else return False from the function Examples: recursive_search([1,2,3], 2) == True recursive_search([1,2,3], 4) == False recursive_search([ ], 4) == False recursive_search([ [ 1 ], 2 ], 1) == False # -----> (because the list contains [ 1 ] and 2, not 1) Hint: Think about what the base case is? When is it obvious that the element is not in the list? If we are not at the base case, how can you use the information about the first element of the…