I want count words start with capital letter ! !

Question

1.00/5 (1 vote)

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How are you all? I can't solving this problem please I want help.

I want from user add text Then find from the text how many words start with Capital Letter

I don't know if solved right ,but I want it with out Array.

Thank you very much.

What I have tried:

public static int startWithCapital(String M) {
        //Ali From Saudi arabia
        int p = 0;
        for (int i = 0; i < M.length(); i++) {
            if (i == 0) {
                String names = M.substring(i, i + 1);
                char a = names.charAt(i);
                if (Character.isUpperCase(a)) {
                    p++;
                }
            }
            if (i >= 1) {
                String names = M.substring(M.indexOf(" "), Character.isUpperCase(d));
                char d = names.charAt(0);
                if (Character.isUpperCase(d)) {
                    if (" ".equals(names));
                    p++;
                }
            }
        }
        System.out.println("The num of words starting with a capital letter = " + p + " words\n");
        return 0;
    }

Posted 8-Dec-17 17:14pm

Member 13511450

Updated 8-Dec-17 18:05pm

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Comments

Richard MacCutchan 9-Dec-17 4:45am

Find the first letter in the string and check if it is upper case. If it is then add 1 to your count. Find the first non-letter after that point. Then find the first letter and compare again. Repeat until the end of the string.

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Bryian Tan · Accepted Answer · 2017-12-08T18:05:00

~~Can you use regular expression ? Here is an example~~

Let stick with loop each char

Java

public class MyClass {
    public static void main(String args[]) {
        startWithCapital("Ali From Saudi araBia YayYY");
    }
    
    public static int startWithCapital(String M) {
        //Ali From Saudi arabia
        int p = 0;
        for (int i = 0; i < M.length(); i++) {
            if (i == 0) {
                String names = M.substring(i, i + 1);
                char a = names.charAt(i);
                if (Character.isUpperCase(a)) {
                    p++;
                }
            }
            if (i >= 1) {
               
               //check if the char is upper case
               if (Character.isUpperCase(M.charAt(i))) {
                   //if yes, is the previous a space?
                   if (M.charAt(i-1) == ' ') {
                        p++;
                    }
               }
            }
        }
        System.out.println("The num of words starting with a capital letter = " + p + " words\n");
        return 0;
    }
    
}

Java

public class MyClass { public static void main(String args[]) { String M = "Ali From Saudi araBia Yay"; int p = 0; String[] parts = M.split(" "); for (String part : parts) { //do something interesting here System.out.println(part); if (Character.isUpperCase(part.charAt(0))) { p++; } } System.out.println("The num of words starting with a capital letter = " + p + " words\n"); //return 0; } }

Java

import java.util.regex.Matcher; import java.util.regex.Pattern; public class MyClass { public static void main(String args[]) { Pattern p = Pattern.compile("[A-Z]\\S+"); Matcher m = p.matcher("Ali From Saudi arabia YaY"); int count = 0; while (m.find()) count++; System.out.println(count); } }

Output:

The num of words starting with a capital letter = 4 words

Test it out: Count Uppercase[^]

reference: Java: Find number of regex matches in a String | Programming.Guide[^]