Delete a specific char in a String

Question

I try to solve some String tasks but I have some problems. I don´t understand how i search for 2 different chars and delete if 1 char is between of this 2 chars.

My task is:

Look for patterns like "zip" and "zap" in the string -- length-3, starting with 'z' and ending with 'p'. Return a string where for all such words, the middle letter is gone, so "zipXzap" yields "zpXzp". My code is:

public String zipZap(String str) {
    char z = 'z';
    char p = 'p';

    for (int i = str.indexOf('z', 0); i != -1; i = str.indexOf('z', 1)) {
        for (int j = str.indexOf('p', 0); i != -1; i = str.indexOf('p', 1)) {
           if (p = i + 2) {
               str = str.replace(i + 1, " ");
           }
        }
    }

    return str;
}

Please learn and practice correct indentation because that is very difficult to read. — Michael
– Michael, Commented Dec 10, 2018 at 14:36

Maurice Perry · Accepted Answer · 2018-12-10 14:39:00Z

3

Try this:

public String zipZap(String str) {
    return str.replaceAll("z[a-z]p", "zp");
}

answered Dec 10, 2018 at 14:39

Maurice Perry

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1 Comment

Amongalen Over a year ago

Worth mentioning that this one replaces only small letters. @Bastiano Coimbra might want to replace any character

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