Exes and Ohs

最新推荐文章于 2022-10-25 10:00:00 发布

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最新推荐文章于 2022-10-25 10:00:00 发布

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分类专栏：我的学习日记

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Check to see if a string has the same amount of 'x's and 'o's. The method must return a boolean and be case insensitive. The string can contain any char.

Examples input/output:

XO("ooxx") => true
XO("xooxx") => false
XO("ooxXm") => true
XO("zpzpzpp") => true // when no 'x' and 'o' is present should return true
XO("zzoo") => false

my:

public class OX {

    public static boolean getXO (String str) {

        // Good Luck!!
        if (str.trim().isEmpty())
            return true;
        char chars[]=str.toLowerCase().toCharArray();
        int numO=0;
        int numX=0;
        for (int i=0;i<chars.length;i++)
        {
            if (chars[i]=='x')
                numX++;
            if (chars[i]=='o')
                numO++;
        }

        return numO==numX?true:false;


    }
}

others:

public class XO {
  
  public static boolean getXO (String str) {
    str = str.toLowerCase();
    return str.replace("o","").length() == str.replace("x","").length();
    
  }
}

思维角度的不同啊