Let's say I have an array like this:
String[] = {
"#abc #def",
"#abc",
"#def",
"#xyz #def"
}
My question is I want to search for specific character or string like "#abc" or "a" and get their positions in the array.
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5 Answers
Just loop through it and check each string yourself
for(int i=0; i < array.length; i++)
if(array[i].contains("#abc"))
aPosition = i;
If you want to store multiple positions, you'll need a mutable array of some sort such as a List, so instead of aPosition = i you'll have list.add(i)
3 Comments
Lukas Anda
That doesn't answer my question then. That's what I needed. To store all positions in an array
Lukas Anda
that list.add(i) seems to be pretty good thing. Gimme a sec to test it. And yes, I know Java but this isn't thing I am very familiar with
Lukas Anda
Basically I found out that putting the values into the list isn't neccessary because I wanted just to put the values into listview.
String[] values = { "1a", "2a", "3a"};
int pos = new ArrayList<String>(Arrays.asList(values)).indexOf("3a");
Comments
let's call your array of strings s, the code will be:
String[] s={"#abc #def",
"#abc",
"#def",
"#xyz #def"};
int count=0;
for(String s1:s){
if(s1.contains("#abc")){
//do what ever you want
System.out.println("Found at: "+count);
break;
}
count++;
}
hope this will work for you.
Comments
Use indexOf
String[] myList = {
"#abc #def",
"#abc",
"#def",
"#xyz #def"
};
int index = myList.indexOf("#abc");
and in the index variable you become the index of the searched element in your array
3 Comments
Lukas Anda
yeah, that will return one number but I want all index nubers that have that string in them
zond
"Cannot invoke indexOf(String) on the array type String[]"
Darksymphony
indexOf doesn't exist
you can use ArrayUtils
String[] myList = { "#abc #def", "#abc", "#def", "#xyz #def" };
int index = ArrayUtils.indexOf(myList,"#def");
2 Comments
Lukas Anda
in this case using for loop is better solution because there are more indexes that have specific string not just one
behelit
and there doesn't appear to be a method .indexOf for ArrayUtils
