[Solved] Regex for a string pattern split [closed]

Introduction

Regular expressions (regex) are a powerful tool for manipulating text and data. They are used in many programming languages for searching, replacing, and manipulating text. Regex can be used to split a string into multiple parts based on a pattern. This tutorial will explain how to use regex to split a string into multiple parts. It will also provide examples of how to use regex to split a string into multiple parts.

Solution

^(.+?)(?:(?<=\G.{2})|$) This regex will split a string into substrings of two characters each.

public static void main(String[] args) throws Exception {
    List<String> strings = new ArrayList(){
        {
            add("abc|hjdj|kleygag|0|0|0|0|");
            add("ghys|jkugb|0|0|0");
            add("yuubf|kluygb|tyrffv|nutgv|0|0|0|0|0|");
            add("0|0|0|0|abdc|ghyft|rtyu");
            add("0|0|0|0|abdc|ghyft|rtyu|0|0|0|0|0|");
        }
    };

    // Non Regex
    System.out.println("Non Regex");
    for (String string : strings) {
        int startIndex = -1;
        int endIndex = -1;
        // Find first non zero character
        for (int i = 0; i < string.length(); i++) {
            if ('a' <= string.charAt(i) && string.charAt(i) <= 'z') {
                startIndex = i;
                break;
            }
        }
        // Find first pipe zero |0 after startIndex
        endIndex = string.indexOf("|0", startIndex);

        // Determine which substring() to use based on the endIndex results
        System.out.println(endIndex > -1 ? string.substring(startIndex, endIndex) : string.substring(startIndex));
    }
    System.out.println("");

    // Regex
    System.out.println("Regex");
    for (String string : strings) {
        System.out.println(string.replaceAll("\\|0|0\\||\\|$", ""));
    }
}

abc|hjdj|kleygag
ghys|jkugb
yuubf|kluygb|tyrffv|nutgv
abdc|ghyft|rtyu
abdc|ghyft|rtyu

Regex
abc|hjdj|kleygag
ghys|jkugb
yuubf|kluygb|tyrffv|nutgv
abdc|ghyft|rtyu
abdc|ghyft|rtyu

Regular expressions are a powerful tool for matching patterns in strings. They can be used to split a string into multiple parts based on a pattern. In this article, we will discuss how to use a regular expression to split a string based on a pattern.

The pattern we will use is a string pattern split. This pattern is used to split a string into multiple parts based on a delimiter. The delimiter can be any character or a set of characters. For example, if we have a string “Hello World” and we want to split it into two parts, we can use the pattern “Hello World” to split it into “Hello” and “World”.

To use a regular expression to split a string, we need to use the split() method. This method takes two parameters: the pattern and the string to be split. The pattern is a regular expression that defines the delimiter. The string is the string to be split. The split() method returns an array of strings that are the parts of the string that were split.

For example, if we have a string “Hello World” and we want to split it into two parts, we can use the following code:

let str = "Hello World";
let parts = str.split(/\s+/);
console.log(parts); // ["Hello", "World"]

In this example, we used the regular expression /\s+/ to split the string. The \s+ pattern matches one or more whitespace characters. This means that the string will be split into two parts, “Hello” and “World”.

We can also use the split() method to split a string based on a set of characters. For example, if we have a string “Hello, World” and we want to split it into two parts, we can use the following code:

let str = "Hello, World";
let parts = str.split(/[, ]+/);
console.log(parts); // ["Hello", "World"]

In this example, we used the regular expression /[, ]+/ to split the string. The [, ]+ pattern matches one or more of the characters in the set. This means that the string will be split into two parts, “Hello” and “World”.

We can also use the split() method to split a string based on a custom pattern. For example, if we have a string “Hello-World” and we want to split it into two parts, we can use the following code:

let str = "Hello-World";
let parts = str.split(/-/);
console.log(parts); // ["Hello", "World"]

In this example, we used the regular expression /-/ to split the string. The - pattern matches the hyphen character. This means that the string will be split into two parts, “Hello” and “World”.

In this article, we discussed how to use a regular expression to split a string based on a pattern. We looked at how to use the split() method to split a string into multiple parts based on a delimiter. We also looked at how to use the split() method to split a string based on a set of characters or a custom pattern.