CareerCup

There's a similar problem with solutions under the Epic Systems section.

Does the first "Us" comes with the "?" without any spaces ? if it doesn't, then we can use StringTokenizer in java.

Does the first "Us" comes with the "?" without any spaces ? if it doesn't, then we can use StringTokenizer in java.

Cannot we just scan the string and append it in another string using stringBuffer....or guy is really looking for knowledge of string function??

just check every char in the string, if it is "u" and the coming char is "s" then replace them, simple subString(0,i)+"them"+subSting(i+1,length) can do it

what about this?

public class test_replace {
public static void main(String[] args)
{
String abc = "It always rains when the bus comes to us";

System.out.println(abc.replaceAll("(^| )us($| )"," them"));
}
}

very nice amishera.... we got to use regexpression here.... one small correct to above. We need to replace us with " them " and trim it. Else your solution will not work with the string "us It always rains when the us bus comes to us"

public class ReplaceTest {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		String abc = "us It always rains when the us bus comes to us";

		System.out.println(abc.replaceAll("(^| )us($| )"," them ").trim());
	}
} //

Can we use back reference like \1 and \2? then we can use it like

abc.replace("(^|

)us($|

)", "\1them\2"));

\\bus\\b

package com.test;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class MatcherDemo {
    private static final String REGEX = "\\bus\\b";
    private static final String INPUT = "Us? It usually rains when bus comes to us";

    public static void main(String[] args) {
       Pattern p = Pattern.compile(REGEX);
       Matcher m = p.matcher(INPUT); // get a matcher object
       int count = 0;
       while(m.find()) {
           count++;
           System.out.println("Match number "+count);
           System.out.println("start(): "+m.start());
           System.out.println("end(): "+m.end());
       }
       
       String s = INPUT;
       System.out.println("Input: " + s);
       s = s.replaceAll(REGEX, "them");
       System.out.println("Output: " + s);
    }
}

i think they must be intrested in unix shell script

regex should be of type

private static final String REGEX = "\W+us\W+";
string.replaceAll(REGEX,"them");

public class usTOthem
{
public static void main(String[] args)
{
String st = "Us? It usually rains when bus comes to us";
String splitArr[] = st.split(" ");


for (int i = 0; i < splitArr.length; i++)
{
if(splitArr[i]=="us")
{
splitArr[i] = "them";
}
}

for(String modified: splitArr)
{
System.out.println(modified);
}
}

}
But still not working..help