Numbers of Words (CPROM Uitm Arau 2015)

Write a program that is able to calculate the number of words used in a complete sentence. The program will count repeated words, as one. The program will also ignore punctuation symbols used in a sentence such as comma (,) and period (.) characters.

Input
A complete sentence.
Output 
An integer representing the number of distinctive words used in the given sentence.


Samples Input
Humpty Dumpty sat on a wall, Humpty Dumpty had a great fall.

Whether the weather is warm, whether the weather is hot, we have to put up with the weather, whether we like it or not.

Samples Output
9
16

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// Solved by Afiq import java.util.*; import java.lang.*; import java.math.*; import java.text.*; public class Q5{ public static void main(String[] args){ Scanner scan = new Scanner(System.in); String line =System.getProperty("line.separator"); scan.useDelimiter(line); String str = scan.next(); str = str.replace(",","").replace(".","").toLowerCase(); String[] get = str.split(" "); List<String> list = Arrays.asList(get); Set<String> set = new HashSet<String>(list); String []newstr = new String[set.size()]; set.toArray(newstr); System.out.print(newstr.length); } }

Judge Answer in Java

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importjava.util.*; public class wordsCountDifferent { public static void main(String args[]) { String sentence; ArrayListwordsAL = new ArrayList(); Scanner in = new Scanner(System.in); intsame_words = 0; char[] tSentence = new char[1000]; intnewWordCount = 0; String nSentence = " "; System.out.print("Enter a sentence: "); sentence = in .nextLine(); for (int index = 0; index < sentence.length(); index++) { if (sentence.charAt(index) != ',' && sentence.charAt(index) != '.') { tSentence[newWordCount] = sentence.charAt(index); newWordCount++; } } nSentence = nSentence.copyValueOf(tSentence, 0, newWordCount); for (String word: nSentence.split(" ")) { wordsAL.add(word); } ArrayListdiffList = new ArrayList(); intdiffIndex = 0; String word1; String word2 = " "; int flag = 0; for (int index = 0; index < wordsAL.size(); index++) { word1 = (String) wordsAL.get(index); if (diffIndex == 0) { diffList.add(diffIndex, word1); diffIndex++; } else { flag = 0; for (int counter = 0; counter < diffList.size(); counter++) { word2 = (String) diffList.get(counter); if (word1.equalsIgnoreCase(word2)) { flag = 1; counter = diffList.size(); } } if (flag == 0) { diffList.add(diffIndex, word1); diffIndex++; } } } System.out.println("Size of diffList = " + diffList.size()); } }