public class sample {
public static void main(String[] args) {
String[] test = new String[1024];
int count = 0;
test[count] = "33";
count++;
test[count] = "34";
String s = new String();
This is just a simplified version, but I would like to append elements to a String variable s up to the index value of count without using StringBuilder, is there a way to do it? Thank you.
edit: without using loop as well, is there a String manipulation function I can use?
One way to do that is using String.join and Arrays.copyOf:
String s = String.join("", Arrays.copyOf(test, count + 1));
Which, with your test data, produces 3334
Dont quite understand what you want...
But I guess you could user char array？
char[] c = new char[maxCount]
for(int i = 0;i<maxCount;i++){
c[i] = "34";
}
String s = String.valueOf(c)
Hope this could help you:)
Hard to say, what you're asking for...
Concatenating consecutive numbers could be easily done with a stream:
String s = IntStream.rangeClosed(0, 1024)
.mapToObj(Integer::toString)
.collect(Collectors.joining());
We can use the join function of String. Assuming the test is the string array.
String joinedString = String.join("", Arrays.stream(test).limit(count).collect(Collectors.toList()))
You can use String.join()
public class Main {
public static void main(String[] args) { String[] test = new String[1024]; int count = 0; test[count] = "33"; count++; test[count] = "34"; String s = new String(); System.out.println(s=String.join("", Arrays.copyOf(test, count + 1))); }}
salltest[0..count]values?