Question on basic programming.
Hi everyone, im still new to programming, i got a very simple homework but i dont know where to start. The program that im needed to do is firstly ask the user to type any two words ( the program are not needed to check if the word exit ) secondly the program shud be able to tell if the 2 words are anagram of each other ( example user input: cat and act, the program will then print a msg saying that the 2 words are anagram). Anyone can give me any suggestion on where to start ?
[489 byte] By [
MetalFanga] at [2007-11-26 16:26:56]
# 1
First: create a class with a main(...) method:
http://java.sun.com/docs/books/tutorial/getStarted/cupojava/index.html
> Hi everyone, im still new to programming, i got a
> very simple homework but i dont know where to start.
> The program that im needed to do is firstly ask the
> user to type any two words ( the program are not
> needed to check if the word exit )
then read two Strings from the standard input:
http://www.exampledepot.com/egs/java.io/ReadFromStdIn.html
> secondly the
> program shud be able to tell if the 2 words are
> anagram of each other ( example user input: cat and
> act, the program will then print a msg saying that
> the 2 words are anagram). Anyone can give me any
> suggestion on where to start ?
now convert the two Strings entered by the user into char-arrays [1], sort the arrays [2] and then use a for-statement [3] to loop through the arrays and check if they're equal.
[1] Look at the methods from the String class to see if there exists a method which will let you create a char-array from it:
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html
[2] Look for a method which sorts a char-array:
http://java.sun.com/j2se/1.4.2/docs/api/java/util/Arrays.html
[3] How to use a for-statement:
http://java.sun.com/docs/books/tutorial/java/nutsandbolts/for.html
# 2
> First...What an answer!
# 3
> > First...> > What an answer!; )
# 4
you must be attending a school in Florida...
# 5
hey thanks for the reply,this is what i have come up with, i have found the methods to sort the array i created http://java.sun.com/j2se/1.4.2/docs/api/java/util/Arrays.html#sort(char[]), but i still run into error because i have no idea how to use the sort(char[] a) command, anyone can enligthen me please? Thanks in advance .
import java.util.Scanner;
public class AnagramChecker {
public static void main(String[]args){
Scanner sc = new Scanner(System.in);
System.out.print("Please enter the first word.");
String firstWord = sc.nextLine();
System.out.print("Please enter the second word.");
String secondWord = sc.nextLine();
char [] wordOne = firstWord.toCharArray();
char [] wordTwo = secondWord.toCharArray();
}
}
Message was edited by:
MetalFang
Message was edited by:
MetalFang
# 6
> hey thanks for the reply,
You're welcome.
> ...
> because i have no idea how to use the sort(char[] a)
> command, anyone can enligthen me please? Thanks in
> advance .
Like this:char[] c = {'b','d','c','a','e'};
System.out.println(java.util.Arrays.toString(c));
java.util.Arrays.sort(c);
System.out.println(java.util.Arrays.toString(c));
# 7
oh i see, sorry for asking some noob question, does that mean i have to import java.util.Arrays.sort; like what i did with the scanner in order for the sort(char[] a) command to work? Thanks in advance !
# 8
> oh i see, sorry for asking some noob question, does
> that mean i have to import
> java.util.Arrays.sort; like what i did with
> the scanner in order for the sort(char[] a) command
> to work? Thanks in advance !
You have a couple of options:
1 - statically import the method sort(...) and use it directly in your code:import static java.util.Arrays.sort;
public class Test {
public static void main(String[] args) {
char[] array = {'b','d','c','a','e'};
sort(array);
for(char ch : array) { System.out.print(ch+" "); }
}
}
2 - import the class java.util.Arrays, and call Arrays.sort(...) in your code:import java.util.Arrays;
public class Test {
public static void main(String[] args) {
char[] array = {'b','d','c','a','e'};
Arrays.sort(array);
for(char ch : array) { System.out.print(ch+" "); }
}
}
3 - don't import anything and call java.util.Arrays.sort(...) in your code:public class Test {
public static void main(String[] args) {
char[] array = {'b','d','c','a','e'};
java.util.Arrays.sort(array);
for(char ch : array) { System.out.print(ch+" "); }
}
}
I suggest going with number 2.
Good luck.
# 9
ok this is what i come up with, it is consider somewhat done and it is somewhat working, will really like to thanks prometheuzz for his/her help...btw is there a way to ignore the case because for example ACT is not an anagram of cat even though they are...
import java.util.Scanner;
import java.util.Arrays;
public class AnagramChecker {
public static void main(String[]args){
Scanner sc = new Scanner(System.in);
System.out.println("Enter two Words to check if they are Anagrams.");
System.out.println("");
System.out.println("Please enter the first word.");
String firstWord = sc.nextLine();
System.out.println("Please enter the second word.");
String secondWord = sc.nextLine();
char [] wordOne = firstWord.toCharArray();
char [] wordTwo = secondWord.toCharArray();
Arrays.sort(wordOne);
Arrays.sort(wordTwo);
if (Arrays.equals(wordOne,wordTwo)){
System.out.println("The words " + firstWord + " and " + secondWord + " are Anagrams.");
}
else{
System.out.println("The words " + firstWord + " and " + secondWord + " are NOT Anagrams.");
}
Message was edited by:
MetalFang
# 10
> ok this is what i come up with, it is consider
> somewhat done and it is somewhat working, will really
> like to thanks prometheuzz for his/her help...
You're most welcome.
> btw is there a way to ignore the case because for example
> ACT is not an anagram of cat even
> though they are...
Yes, there is such a method. It's somewhere in the String class. So have a look at the API docs of the String class and browse through the available methods to see which one it is:
http://java.sun.com/j2se/1.4.2/docs/api/java/lang/String.html
Good luck.
# 11
There is one thing you could do before converting the stings to character arrays and sorting them. Before you do this you should check the length of the 2 inputted strings, if the lengths are unequal, the cannot be an anagram of each other.
String word1 =
String word2 =
if(word1.length() != word2.length(){
System.out.println("The two words are not anagrams of each other");
}else{
// convert to arrays, sort arrays & test arrays
}
# 12
metalfang, you can call a function .toUppercase(), you can use this function when the user inputs and make everything caps, unless your teacher requires you to output exactly what the user inputs...hope this helps!
