vmware.java

1. maximum Difference
2. k-subsequence
3. single-line and multi-line comments
4. unique domains.


3.
import java.io.*;
public class Solution {
    public static void main(String args[] ) throws Exception {
        BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
        String line ;
        int count = 0;
        boolean multiLine = false;
        while((line = in.readLine())!=null){
            int index = line.indexOf("//");
            if(index >= 0)
                System.out.println(line.substring(index));                
            else{              
                if(multiLine){
                    int index1 = line.indexOf("*/");
                    if(index1 >= 0){
                        System.out.println(line.substring(0, index1+2).trim());
                        multiLine = false;
                    }else{
                        System.out.println(line.trim());
                    }
                }else{
                    int beginIndex = line.indexOf("/*");
                    int endIndex = line.indexOf("*/");
                    if(beginIndex >= 0){
                        if(endIndex > beginIndex){
                            System.out.println(line.substring(beginIndex, endIndex+2));
                        }
                        else {
                            System.out.println(line.substring(beginIndex));
                            multiLine =true;
                        }
                    }                    
                }
            }
        }
    }
}

1.
/*
 * Complete the function below.
 */

    static int maxDifference(int[] a) {
        if(a == null || a.length <= 1)
            return 0;
        int maxDiff = Integer.MIN_VALUE;
        int min = a[0];
        for(int i =1; i <a.length; i++){
            /*for(int j = i+1; j<a.length; j++){
                if(max < a[j]-a[i]){
                    max = a[j]-a[i];
                }
            }*/
            if(a[i]-min > maxDiff)
                maxDiff = a[i]-min;
            min = Math.min(min, a[i]);
        }
        return maxDiff;

    }

Regex Matching on URLs

from urlparse import urlparse
import re

PATTERN = "http[s]?://(?:[a-zA-Z]|[0-9]|[$-_@.&+]|[!*\(\),]|(?:%[0-9a-fA-F][0-9a-fA-F]))+"
text = '<p>Hello World</p><a href="http://gist.github.com">More Examples</a><a href="http://github.com">Even More Examples</a>'
urls = [urlparse(u).hostname for u in re.findall(PATTERN, text)]
hosts = set([".".join(u.split('.')[-2:]) for u in urls])
print hosts # [github.com]