This is the content of my Input file:
123
I want to take this input content to a int[] Array
My code:
BufferedReader br = new BufferedReader(new FileReader("yes.txt"));
int[] Array = br.readline().toCharArray(); // Error as it has to be int array
How to solve this: output:
Array[0]=1
Array[0]=2
Array[0]=3
Simple convert of your string to int array:
private int[] convertStringToIntArray(String str) {
int[] resultArray = new int[str.length()];
for (int i = 0; i < str.length(); i++)
resultArray[i] = Character.getNumericValue(str.charAt(i));
return resultArray;
}
Once you have your string in, it's very simple.
I would recommend using an arraylist for this, as it is easier to add new elements on the fly.
String inputNumbers = "12345";
ArrayList<Integer> numberList = new ArrayList<Integer>();
for(int i = 0; i < inputNumbers.length(); i++) {
numberList.add(Integer.valueOf(numberList.substring(i,i+1)));
}
And there you go! You now have an arraylist called numberList where you can access all of the numbers with numberList.get(0), numberList.get(1), etc.
First read the input as string then convert to int array as below
String inputString = br.readline()
int[] num = new int[inputString.length()];
for (int i = 0; i < inputString.length(); i++){
num[i] = inputString.charAt(i) - '0';
}
Another way is to convert the char array to int array
char[] list = inputString.toCharArray();
int[] num = new int[inputString.length()];
for (int i = 0; i > inputString.length(); i++){
num[i] = list[i];
}
System.out.println(Arrays.toString(num));
