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Thread: String O string where are you?

  1. #1
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    Default String O string where are you?

    I'm trying to write a program that splits string up and prints it backwards. But it does not work.

    My questione: When I type domain name www.apple.com after pressing enter nothing happens until I press ctrl+z and then the correct output comes out: com.apple.www

    Why is that?

     
    import java.util.Arrays;
     
    public class Domain {//method reverseDomain
        private final String[] fields;
        private final int N;
     
        // store fields in reverse order
        public Domain(String name) {
            fields = name.split("\\.");
            N = fields.length;
        }
     
        // return string representation - fields, delimited by .
        public String toString() {
            if (N == 0) return "";
            String s = fields[0];
            for (int i = 1; i < N; i++)
                s = fields[i] + "." + s;
            return s;
        }
     
        // compare by reverse domain name
        public int compareTo(Domain that) {
            for (int i = 0; i < Math.min(this.N, that.N); i++) {
                String s = this.fields[this.N - i - 1];
                String t = that.fields[that.N - i - 1];
                int c = s.compareTo(t);
                if      (c < 0) return -1;
                else if (c > 0) return +1;
            }
            return this.N - that.N;
        }
     
         // test client
        public static void main(String[] args) {
     
            // read in domain names
            String[] names = StdIn.readAll().split("\\s+");
            Domain[] domains = new Domain[names.length];
            for (int i = 0; i < domains.length; i++) {
                domains[i] = new Domain(names[i]);
            }
     
            // sort
            Arrays.sort(domains);
     
            // print results
            for (int i = 0; i < domains.length; i++) {
                StdOut.println(domains[i]);
            }
        }
    }


  2. #2
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    Default Re: String O string where are you?

    I suspect it is due to the way the StdIn.readAll() method works. Read the documentation for that call and see why it might be acting that way. I changed your code to use Scanner and System.out, and it works fine.

  3. The Following User Says Thank You to GregBrannon For This Useful Post:

    JohnJohnson123 (October 16th, 2013)

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