I tried to search online to solve this question but I didn't found anything.
I wrote the following abstract code to explain what I'm asking:
String text = "how are you?";
String[] textArray= text.splitByNumber(4); //this method is what I'm asking
textArray[0]; //it contains "how "
textArray[1]; //it contains "are "
textArray[2]; //it contains "you?"
The method splitByNumber splits the string "text" every 4 characters. How I can create this method??
Many Thanks
I think that what he wants is to have a string split into substrings of size 4. Then I would do this in a loop:
List<String> strings = new ArrayList<String>();
int index = 0;
while (index < text.length()) {
strings.add(text.substring(index, Math.min(index + 4,text.length())));
index += 4;
}
Using Guava :
Iterable<String> result = Splitter.fixedLength(4).split("how are you?");
String[] parts = Iterables.toArray(result, String.class);
What about a regexp?
public static String[] splitByNumber(String str, int size) {
return (size<1 || str==null) ? null : str.split("(?<=\\G.{"+size+"})");
}
Try this
String text = "how are you?";
String array[] = text.split(" ");
Or you can use it below
List<String> list= new ArrayList<String>();
int index = 0;
while (index<text.length()) {
list.add(text.substring(index, Math.min(index+4,text.length()));
index=index+4;
}
Quick Hack
private String[] splitByNumber(String s, int size) {
if(s == null || size <= 0)
return null;
int chunks = s.length() / size + ((s.length() % size > 0) ? 1 : 0);
String[] arr = new String[chunks];
for(int i = 0, j = 0, l = s.length(); i < l; i += size, j++)
arr[j] = s.substring(i, Math.min(l, i + size));
return arr;
}
Using simple java primitives and loops.
private static String[] splitByNumber(String text, int number) {
int inLength = text.length();
int arLength = inLength / number;
int left=inLength%number;
if(left>0){++arLength;}
String ar[] = new String[arLength];
String tempText=text;
for (int x = 0; x < arLength; ++x) {
if(tempText.length()>number){
ar[x]=tempText.substring(0, number);
tempText=tempText.substring(number);
}else{
ar[x]=tempText;
}
}
return ar;
}
Usage : String ar[]=splitByNumber("nalaka", 2);
I don't think there's an out-of-the-box solution, but I'd do something like this:
private String[] splitByNumber(String s, int chunkSize){
int chunkCount = (s.length() / chunkSize) + (s.length() % chunkSize == 0 ? 0 : 1);
String[] returnVal = new String[chunkCount];
for(int i=0;i<chunkCount;i++){
returnVal[i] = s.substring(i*chunkSize, Math.min((i+1)*chunkSize-1, s.length());
}
return returnVal;
}
Usage would be:
String[] textArray = splitByNumber(text, 4);
EDIT: the substring actually shouldn't surpass the string length.
Here's a succinct implementation using Java8 streams:
String text = "how are you?";
final AtomicInteger counter = new AtomicInteger(0);
Collection<String> strings = text.chars()
.mapToObj(i -> String.valueOf((char)i) )
.collect(Collectors.groupingBy(it -> counter.getAndIncrement() / 4
,Collectors.joining()))
.values();
Output:
[how , are , you?]
This is the simplest solution i could think off.. try this
public static String[] splitString(String str) {
if(str == null) return null;
List<String> list = new ArrayList<String>();
for(int i=0;i < str.length();i=i+4){
int endindex = Math.min(i+4,str.length());
list.add(str.substring(i, endindex));
}
return list.toArray(new String[list.size()]);
}
Try this solution,
public static String[]chunkStringByLength(String inputString, int numOfChar) {
if (inputString == null || numOfChar <= 0)
return null;
else if (inputString.length() == numOfChar)
return new String[]{
inputString
};
int chunkLen = (int)Math.ceil(inputString.length() / numOfChar);
String[]chunks = new String[chunkLen + 1];
for (int i = 0; i <= chunkLen; i++) {
int endLen = numOfChar;
if (i == chunkLen) {
endLen = inputString.length() % numOfChar;
}
chunks[i] = new String(inputString.getBytes(), i * numOfChar, endLen);
}
return chunks;
}
My application uses text to speech! Here is my algorithm, to split by "dot" and conconate string if string length less then limit
String[] text = sentence.split("\\.");
ArrayList<String> realText = sentenceSplitterWithCount(text);
Function sentenceSplitterWithCount: (I concanate string lf less than 100 chars lenght, It depends on you)
private ArrayList<String> sentenceSplitterWithCount(String[] splittedWithDot){
ArrayList<String> newArticleArray = new ArrayList<>();
String item = "";
for(String sentence : splittedWithDot){
item += DataManager.setFirstCharCapitalize(sentence)+".";
if(item.length() > 100){
newArticleArray.add(item);
item = "";
}
}
for (String a : newArticleArray){
Log.d("tts", a);
}
return newArticleArray;
}
function setFirstCharCapitalize just capitalize First letter: I think, you dont need it, anyway
public static String setFirstCharCapitalize(String input) {
if(input.length()>2) {
String k = checkStringStartWithSpace(input);
input = k.substring(0, 1).toUpperCase() + k.substring(1).toLowerCase();
}
return input;
}
You can simply split the String into a String array via the following:
String[] parts = yourString.split(" ");
System.out.println(parts[0]);
System.out.println(parts[1]);
System.out.println(parts[2]);
output:
how
are
you?
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