I am trying to write a program that takes input from a user, such as "1 5 3 6 3 5 0" all in one line. I would like to take this input and store each number in an array. So for example, my array would have values 1, 5, 3, 6, 3, 5, 0.
I do not even know where to start with this. I know to create a scanner. I thought that maybe I could do nextLine(); and then just separate it by spaces and put the values into an array.. However, nextLine() only takes strings.
You can use .split() or .chatAt(position) separate each element from the entire String.
String a = example.charAt(0);
this would copy the first character, for example.
Here you go, as long as the numbers are entered with spaces between them, this will populate an array of ints:
System.out.println("Enter something > ");
Scanner input = new Scanner(System.in);
//read in string entered by user
String inputString = input.nextLine();
//split the string into an array of strings, using [space]
String[] split = inputString.split(" ");
//create a new int array, and populate it with the contents of the split string
int intarray[] = new int[split.length];
for (int i = 0; i < split.length; i++) {
intarray[i] = Integer.parseInt(split[i]);
}
String input = "1 5 3 6 3 5 0";
String[] inputs = input.split(" ");
ArrayList<Integer> values = new ArrayList<Integer>();
for (String s : inputs) {
values.add(Integer.parseInt(s));
}
System.out.println(values);
This prints [1, 5, 3, 6, 3, 5, 0].
u may try nextInt():
Scanner scn = new Scanner(System.in);
int[] nums = new int[5];
out.printf("Enter %d numbers, space separated: ", nums.length);
for(int i = 0; nums.length > i; i ++) {
nums[i] = scn.nextInt();
}
out.println("\nYour values are:");
for(int i : nums) {
out.printf("%-8d", i);// u may use //out.printf("%d\t", i);
}
split(), if need be. Or you can take a number at a time. Try putting up what code you already have.