Tokenize a string: Difference between revisions
m (→[[Java]]: remove unnessary tabbing) |
m (→[[Java]]: added a "." to fully comply with the specification) |
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String word[] = toTokenize.split(","); |
String word[] = toTokenize.split(","); |
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for(int i=0; i<word.length; i++) { |
for(int i=0; i<word.length; i++) { |
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System.out. |
System.out.print(word[i] + "."); |
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} |
} |
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StringTokenizer tokenizer = new StringTokenizer(toTokenize, ","); |
StringTokenizer tokenizer = new StringTokenizer(toTokenize, ","); |
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while(tokenizer.hasMoreTokens()) { |
while(tokenizer.hasMoreTokens()) { |
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System.out. |
System.out.print(tokenizer.nextToken() + "."); |
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} |
} |
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Revision as of 04:52, 8 February 2007
You are encouraged to solve this task according to the task description, using any language you may know.
Separate the string "Hello,How,Are,You,Today" by commas into an array so that each index of the array stores a different word. Display the words to the 'user', in the simplest manner possible, separated by a period. To simplify, you may display a trailing period.
Java
Compiler: JDK 1.0 and up
There is multiple way to tokenized a string in Java. The first with a split the String into an array of String, and the other way to give a Enumerator. The second way given here will skip any empty token. So if two commas are given in line, there will be an empty string in the array given by the split function but no empty string with the StringTokenizer object.
String toTokenize = "Hello,How,Are,You,Today"; //First way String word[] = toTokenize.split(","); for(int i=0; i<word.length; i++) { System.out.print(word[i] + "."); } //Second way StringTokenizer tokenizer = new StringTokenizer(toTokenize, ","); while(tokenizer.hasMoreTokens()) { System.out.print(tokenizer.nextToken() + "."); }
JavaScript
Interpreter: Firefox 2.0
var str = "Hello,How,Are,You,Today"; var tokens = str.split(","); alert( tokens.join(".") );
Perl
Interpreter: Perl any 5.X
As a one liner without a trailing period, and most efficient way of doing it as you don't have to define an array.
print join('.', split(/,/, "Hello,How,Are,You,Today"));
If you needed to keep an array for later use, again no trailing period
my @words = split(/,/, "Hello,How,Are,You,Today"); print join('.', @words);
If you really want a trailing period, here is an example
my @words = split(/,/, "Hello,How,Are,You,Today"); print $_.'.' for (@words);
Python
Interpreter: Python 2.5
words = "Hello,How,Are,You,Today".split(',') for word in words: print word
This prints each word on its own line. If we want to follow the task specification strictly, we join the array elements with a dot, then print the resulting string:
print '.'.join("Hello,How,Are,You,Today".split(','))
Ruby
string = "Hello,How,Are,You,Today".split(',') string.each do |w| print "#{w}." end
Tcl
Generating a list form a string by splitting on a comma:
split string ,
Joining the elements of a list by a period:
join list .
Thus the whole thing would look like this:
puts [join [split "Hello,How,Are,You,Today" ,] .]
If you'd like to retain the list in a variable with the name "words", it would only be marginally more complex:
puts [join [set words [split "Hello,How,Are,You,Today" ,]] .]