JAVA: contarVocales en una cadena: https://es.stackoverflow.com/q/137583/29967, Java

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import java.util.*;
import java.lang.*;
/* JAVA: contarVocales en una cadena: https://es.stackoverflow.com/q/137583/29967*/
class Rextester
{  
    public static void main(String args[])
    {
        int totalVocales=0;
        
        String helloWorld="Hello world áéíóÚ";
        totalVocales=contarVocales(helloWorld);
        System.out.println(totalVocales);
        
        String loremIpsum=
            "Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed eiusmod tempor incidunt ut labore et dolore magna aliqua."+ 
            "Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquid ex ea commodi consequat. "+
            "Quis aute iure reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. "+
            "Excepteur sint obcaecat cupiditat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.";   
        totalVocales=contarVocales(loremIpsum);
        System.out.println(totalVocales);  
        totalVocales=contarVocalesFor(loremIpsum);
        System.out.println(totalVocales);

HashMap<String,Integer> mapTotalVocales=contarVocalesMap(loremIpsum);
        System.out.println(mapTotalVocales);  
    
    }
    
    public static int contarVocales(String s){
        int totalVocales = s.replaceAll("[^AEIOUaeiouÁÉÍÓÚáéíóú]","").length();
        int totalA = s.replaceAll("[^AÁá]","").length();
        return totalVocales;
    }

public static HashMap<String,Integer> contarVocalesMap(String s){
          HashMap<String,Integer> mapTotal=new HashMap<String,Integer>();

int totalVocales = s.replaceAll("[^AEIOUaeiouÁÉÍÓÚáéíóú]","").length();
        int totalA = s.replaceAll("[^AaÁá]","").length();
        int totalE = s.replaceAll("[^EeÉé]","").length();
        int totalI = s.replaceAll("[^IiÍí]","").length();
        int totalO = s.replaceAll("[^OoÓó]","").length();
        int totalU = s.replaceAll("[^UuÚú]","").length();
        mapTotal.put("a",totalA);
        mapTotal.put("e",totalE);
        mapTotal.put("i",totalI);
        mapTotal.put("o",totalO);
        mapTotal.put("u",totalU);
        mapTotal.put("all",totalVocales);
        return mapTotal;
    }
    
    
    
    
    
    public static int contarVocalesFor(String s){
        int totalVocales = 0;

for (int i = 0; i < s.length(); i++) {
          char c = s.charAt(i);
          if ((c == 'A') || (c == 'a') || (c == 'E') || (c == 'e') || (c == 'I') || (c == 'i')
          || (c == 'O') || (c == 'o') || (c == 'U') || (c == 'u'))
            totalVocales++;
        }
        return totalVocales;
    }
}

[ + ] Show input
Compilation time: 1.04 sec, absolute running time: 0.33 sec, cpu time: 0.39 sec, memory peak: 21 Mb, absolute service time: 1,39 sec

JAVA: contarVocales en una cadena: https://es.stackoverflow.com/q/1375...