How do I split a string with numbers? Like if I have "20 40" entered, how do I split it so I get 20, 40?
int t = Integer.parseInt(x);
int str = t;
String[] splited = str.split("\\s+");
My code.
2 Answers
If you're trying to parse a string that contains whitespace-delimited integer tokens, into an int array, the following will work:
String input = "20 40";
String[] tokens = input.split(" ");
int[] numbers = new int[tokens.length];
for (int i = 0; i < tokens.length; i++) {
numbers[i] = Integer.parseInt(tokens[i].trim());
}
You can also do this in a one-liner through the Iterables and Splitter utilities from the amazing Google Guava library:
Integer[] numbers = Iterables.toArray(Iterables.transform(
Splitter.on(' ').trimResults().split(input),
new Function<String, Integer>() {
@Override
public Integer apply(String token) {
return Integer.parseInt(token);
}
}), Integer.class);
Comments
You need to convert it to String value and then split, maybe like this:
String[] splited = String.valueOf(str).split("\\s+");
It seems you are reading the number as String and trying to convert it to integer before the split here:
int t = Integer.parseInt(x);
so you can actually split your variable x and get the indiviudal int values out of it like this:
String[] splited = x.split("\\s+");
for(String num:splited) {
int intVal = Integer.valueOf(num);
}
5 Comments
brimborium
str is an int. How would your solution ever return something other than new String[] {String.valueOf(str)}?
Juned Ahsan
@brimborium String.valueOf() will return the String for the int and split will return the String array ....
brimborium
If you are converting an
int to String, there is nothing to split, because it's just a single integer, there will never be a space...Juned Ahsan
@brimborium I believe questioner has got a string which he/she tried to convert to int using this int t = Integer.parseInt(x);
brimborium
Thanks, the edit of your answer is much better. The first code segment (the one you initially posted) still does not make sense, because it is equal to what I wrote in my first comment.
String.splitit does not work for an int so you would want to do maybeString[] nums = x.split("\\s+");Im assumingxis theStringof nums divided up by spaces? Look at @Juned Ashan answer