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- Write a program that reads a string and checks the longest substring starting with "a" and ending with "z" included in it. Note that, the substring cannot contain another a or another z in it. For example: Ifs="bcd bbccdd badefgze tabdz", the longest substring is: 6Write a Boolean function called contains_whitespace() that accepts a string as a parameter and returns True if the string contains one or more whitespaces (" ", "/t", "/n") characters, or False otherwise. Write a main() function to demonstrate how it works. In pythonFor this project, you will be writing regular expressions that look for and find all instances of a date in any given string. Your program should: Find the following different formats for dates: August 2nd, 1994 august 2, 1994 08/02/1994 08/02/94 08-02-1994 Your program should be case insensitive using re.IGNORECASE Your program can only have a maximum of two different regexes. A special prize goes to those of you who can fit all of this into one regex Your program should be able to tell if the date is a valid date. For example, if the date says 99/99/99, then your program should ignore this as a date. HINT: this is not done within the regex. Try saving your dates to something like a list and going through that list after your regex runs. At the end of your program, it should print out all of the dates in the following format: mm/dd/yyyy. EX. 08/02/1994 Your program should use at least two character classes, you may need more. Feel free to make your own custom classes as well.…
- Write a program that gets a string from the user and reports whether or not there are repeated characters in itWrite a method that finds the number of occurrences of a specified character in a string using thefollowing header:public static int countLetter(String str, char ch)Write a test program that prompts the user to enter a word and a letter of the alphabet. Theprogram should then count and display the number of occurrences of the letter in the word. Asample dialog for the program is shown below:Palindromes - “A palindrome” is a string that reads the same from both directions. For example: the word "mom" is a palindrome. Also, the string "Murder for a jar of red rum" is a palindrome. - So, you need to implement a Boolean function that takes as input a string and its return is true (1) in case the string is a palindrome and false (0) otherwise. - There are many ways to detect if a phrase is a palindrome. The method that you will implement in this task is by using two stacks. This works as follows. Push the left half of the characters to one stack (from left to right) and push the second half of the characters (from right to left) to another stack. Pop from both stacks and return false if at any time the two popped characters are different. Otherwise, you return true after comparing all the elements. Phrases of odd length have to be treated by skipping the middle element like the word "mom", your halves are "m" and "m". - Hint: (without using STL)
- Write a program which concatenates two strings "I LOVE" and "YOU.", checks for presence of the character "." replaces it with "!", and prints out the final string.Write a program that creates an input function to enter a string. Then use .isalpha method to find ifthe first character in the string starts with a letter or a non-letter. (Hint: use indexing and if and if notfunction). Make sure to print the two statements ‘Your string starts with a letter’ and ‘Your stringcontains a non-letter’)The countSubstring function will take two strings as parameters and will return an integer that is the count of how many times the substring (the second parameter) appears in the first string without overlapping with itself. This method will be case insensitive. For example: countSubstring(“catwoman loves cats”, “cat”) would return 2 countSubstring(“aaa nice”, “aa”) would return 1 because “aa” only appears once without overlapping itself. public static int countSubstring(String s, String x) { if (s.length() == 0 || x.length() == 0) return 1; if (s.length() == 1 || x.length() == 1){ if (s.substring(0,1).equals(x.substring(0,1))){ s.replaceFirst((x), " "); return 1 + countSubstring(s.substring(1), x); } else { return 0 + countSubstring(s.substring(1), x); } } return countSubstring(s.substring(0,1), x) + countSubstring(s.substring(1), x); } public class Main { public static void main(String[] args) { System.out.println(Recursion.countSubstring("catwoman loves cats","cat"));…
- Write a program that reads a text (string) and prints the letter that starts the most number ofwords in that stringA string is a palindrome if it is identical forward and backward. For example “anna”,“civic”, “level” and “hannah” are all examples of palindromic words.Write a programthat reads a string from the user and uses a loop to determines whether or not it is apalindrome. In javaWrite a program called palindrome.cpp. The program should have the two functions listed below. Your program should loop until the user enters “quit". The determination of a word being a palindrome or not should be case insensitive. void getWord ( string& word ): This function is responsible for getting the word from the user. void isPalindrome ( string& word, bool& result ): This function is responsible for determining if a word is a palindrome or not. It will return true if the word is a palindrome and false if the word is not a palindrome using a boolean variable passed by reference. Sample Output 1 What is the word? Kayak Kayak is a palindrome Sample Output 2 What is the word? APPLE APPLE is not a palindrome Notes • Remember that you can access each character in a string by using the index operator, i.e., word[3], and the highest index of any string is the length of the string minus one. • To handle the case-insensitivity part you may need to work with functions that change the case…