Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Write a recursive function that takes in a string and outputs the string in reverse. (Do not use stack)
***in C++ please. Thanks!
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- Write a recursive function diff (java) which utilizes two positive integer arguments (x and y) and returns |x – y|. An x - y calculation may not be performed during the function. Thanks so much for your help!arrow_forwardWrite a recursive function called Rev takes a string argument (str) and and integerargument(i – the initial string position). Rev prints the str in reverse. You may not useany built-in reverse function or method. You may use string’s length method.arrow_forwardWrite a recursive function to see if the first letter matches the last letter, return the middle letters and check until only 0 or 1 letters are left. It returns True or False. Here is the original code that needs to be checked: # Returns the first character of the string str def firstCharacter(str): return str[:1] # Returns the last character of a string str def lastCharacter(str): return str[-1:] # Returns the string that results from removing the first # and last characters from str def middleCharacters(str): return str[1:-1] def isPalindrome(str): # base case #1 # base case #2 # recursive case pass Python codearrow_forward
- please solve in python and give code. thankzzarrow_forwardDo the following in Haskell and show type signature!: (Also show full code on how to execute the program including an example) Write a recursive function to count the number of items in a list for example: cntItems [2,5,6] = 3arrow_forward: Implement a function void reverse( char* str) in C or C++ which reversesa null-terminated string.arrow_forward
- Below, enter code to complete implementation of a recursive function palindrome() that determines whether an input string is a palindrome or not: 3. palindrome(s):arrow_forwardIntroduction In this lab you will find several exercises to strengthen your understanding of recursion and C++ arrays. Turn in all your work (code, spreadsheets, graphs, and short answers) into Blackboard. Part 1: Recursion A. Write a recursive function named factorial that computes the factorial for a given int. B. Write a recursive function named fibonacci that computes the value of the nth Fibonacci sequence: [1, 2, 3, 5, ...] C. Write a function named towers that counts the number of moves in Towers of Hanoi given the number of rings n. Part 2: Unit Testing Write test functions for the three functions in part 1. Name your test functions with a "test" prefix; for example, testRecursive Contains. Use the minimal test equivalence class to ensure a minimal yet complete test. Use c-style asserts to verify and validate values or print to the console for manual verification. Part 3: Time Complexity Review Big-O notation in the link provided'. In this exercise we'll explore the time…arrow_forwarduse javaarrow_forward
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