CODEWITHSUNDEEP
javastring
BoTheBear
BoTheBear

Reputation: 11

How to separate a String line with a paragraph to make text as a list

I have a really long text that looks like "123testes1233iambeginnerplshelp123 .." and I need to separate the line with the paragraph each time the program reads number. So output should be like:

123tests
12333iambeninnerplshelp
123 ...

Upvotes: 1

Views: 369

Answers (4)

patel
patel

Reputation: 440

my solution

public StringSplitNum(){ 
    String someString = "123testes1233iambeginnerplshelp123abc";
    String regex = "((?<=[a-zA-Z])(?=[0-9]))|((?<=[0-9])(?=[a-zA-Z]))";
    List arr = Arrays.asList(someString.split(regex));
    for(int i=0; i< arr.size();i+=2){
    System.out.println(arr.get(i)+ " " + arr.get(i+1));
}

Upvotes: 0

swayamraina
swayamraina

Reputation: 3158

A simple approach (without any dependencies) would look something like this,

class Test {

    public static void main (String[] args) throws java.lang.Exception
    {
        String a = "123testes1233iambeginnerplshelp123";
        StringBuffer sb = new StringBuffer();
        for (int i=0; i<a.length()-1; i++) {
            while (i<a.length()-1 && !(!isNumber(a.charAt(i)) && isNumber(a.charAt(i+1)))) {
                sb.append(a.substring(i,i+1));
                i++;
            }
            sb.append(a.substring(i,i+1));
            System.out.println(sb.toString());
            sb.setLength(0);
        }

    }

    private static boolean isNumber (char c) {
        return ((int)c >=48) && ((int)c <= 57);
    }

}

Upvotes: 1

mukesh210
mukesh210

Reputation: 2892

You can solve it using Regex. Everytime we are looking for patterns where number is followed by characters and if it is found, print it:

        String text = "123testes1233stackoverflowwillsaveyou123dontworry";
        String wordToFind = "\\d+[a-z]+";
        Pattern word = Pattern.compile(wordToFind);
        Matcher match = word.matcher(text);

        while (match.find()) {
            System.out.println(match.group());
        }

Upvotes: 4

Karol Dowbecki
Karol Dowbecki

Reputation: 44932

One way to do it would be to use StringTokenizer. If you make the assumption that every output line must start with 123, even if the input doesn't start with it, it could be:

String input = "123testes1233iambeginnerplshelp123 ..";
String delimiter = "123";
StringTokenizer tokenizer = new StringTokenizer(input, delimiter);
while (tokenizer.hasMoreTokens()) {
  String line = delimiter + tokenizer.nextToken();
  System.out.println(line);
}

Upvotes: 2

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