Let's say I have this String -
string = "AEIOU";
and I wanted to convert it to an ArrayList<String>, where each character is it's own individual String within the ArrayList<String>
[A, E, I, O, U]
EDIT: I do NOT want to convert to ArrayList<Character> (yes, that's very straightforward and I do pay attention in class), but I DO want to convert to an ArrayList<String>.
How would I do that?
transform the String into a char array,
char[] cArray = "AEIOU".toCharArray();
and while you iterate over the array, transform each char into a String, and then add it to the list,
List<String> list = new ArrayList<String>(cArray.length);
for(char c : cArray){
list.add(String.valueOf(c));
}
Loop and use String.charAt(i), to build the new list.
You can do it by using the split method and setting the delimiter as an empty string like this:
ArrayList<String> strings = new ArrayList<>(Arrays.asList(string.split("")));
First you have to define the arrayList and then iterate over the string and create a variable to hold the char at each point within the string. then you just use the add command. You will have to import the arraylist utility though.
String string = "AEIOU";
ArrayList<char> arrayList = new ArrayList<char>();
for (int i = 0; i < string.length; i++)
{
char c = string.charAt(i);
arrayList.add(c);
}
The import statement looks like : import java.util.ArrayList;
To set it as a string arrayList all you have to do is convert the char variables we gave you and convert it back to a string then add it: (And import the above statement)
ArrayList<String> arrayList = new ArrayList<String>();
String string = "AEIOU"
for (int i = 0; i < string.length; i++)
{
char c = string.charAt(i);
String answer = Character.toString(c);
arrayList.add(answer);
}
Since everyone is into doing homework this evening ...
String myString = "AEIOU";
List<String> myList = new ArrayList<String>(myString.length());
for (int i = 0; i < myString.length(); i++) {
myList.add(String.valueOf(myString.charAt(i)));
}
For a single line answer use the following code :
Arrays.asList(string .toCharArray());
Kotlin approach:
fun String.toArrayList(): ArrayList<String> {
return ArrayList(this.split("").drop(1).dropLast(1))
}
var letterArray = "abcd".toArrayList()
print(letterArray) // arrayListOf("a", "b", "c", "d")
charfrom a String?