Question

Assign to a variable in your program a triple-quoted string that contains your favourite paragraph of text — perhaps a poem, a speech, instructions to bake a cake, some inspirational verses, etc.

Write a function which removes all punctuation from the string, breaks the string into a list of words, and counts the number of words in your text that contain the letter “e”. Your program should print an analysis of the text like this:

Your text contains 243 words, of which 109 (44.8%) contain an "e".

Answer 1

import java.util.List; import java.util.ArrayList; public class Main { // returns number of words in str static int countWordsUsingSplit(String input) { if (input == null || input.isEmpty()) { return 0; } String[] words = input.split("\\s+"); return words.length;    } // Function to convert ArrayList<String> to String[] static String[] GetStringArray(ArrayList<String> arr) {    // declaration and initialise String Array String str[] = new String[arr.size()];    // Convert ArrayList to object array Object[] objArr = arr.toArray();    // Iterating and converting to String int i = 0; for (Object obj : objArr) { str[i++] = (String)obj; }    return str; }    public static void main(String[] args) { String str = "I'm selfish, impatient and a little insecure. I make mistakes, I am out of control and at times hard to handle. But if you can't handle me at my worst, then you sure as hell don't deserve me at my best";    // similar to Matcher.replaceAll str = str.replaceAll("\\p{Punct}","");    System.out.println(str); System.out.println(countWordsUsingSplit(str)); ArrayList<String> wordArrayList = new ArrayList<String>(); for(String word : "I'm selfish, impatient and a little insecure. I make mistakes, I am out of control and at times hard to handle. But if you can't handle me at my worst, then you sure as hell don't deserve me at my best".split("\\s+")) { wordArrayList.add(word); } int number_of_words_containing_e = 0; String[] objects = GetStringArray(wordArrayList); for(int i = 0;i<objects.length;i++){ char array[]=objects[i].toCharArray(); for(int j =0;j<array.length;j++){ if(array[j]=='e'){ number_of_words_containing_e = number_of_words_containing_e + 1; break; } } } System.out.println(number_of_words_containing_e); System.out.println("Your text contains "+countWordsUsingSplit(str)+" words, of which " +number_of_words_containing_e+" contain an 'e'.");    } }