CODEWITHSUNDEEP
javastringint
gger234
gger234

Reputation: 149

reading an integer and string from the same input line (java)

alright so im wondering how can I read an integer and string from the same line? Ill give an example: if I have input=3K how can I make my output look like this: 3K=3000?

Upvotes: 1

Views: 1214

Answers (2)

MadProgrammer
MadProgrammer

Reputation: 347194

Start by breaking down you requirements.

  • You have an input value of [number][modifier]
  • You need to extract the number from the modifier
  • You need to apply the modifier to the number

If you want a variable/flexible solution, where you can supply any type of modifier, you will need to determine the number of digits the user has entered and then the modifier.

Once you have that, you can split the String, convert the digits to an int and apply the appropriate calculations based on the modifier...

Scanner kb = new Scanner(System.in);
String input = kb.nextLine();

int index = 0;
while (index < input.length() && Character.isDigit(input.charAt(index))) {
    index++;
}

if (index >= input.length()) {
    System.out.println("Input is invaid");
} else {
    String digits = input.substring(0, index);
    String modifier = input.substring(index);

    int value = Integer.parseInt(digits);
    switch (modifier.toLowerCase()) {
        case "k":
            value *= 1000;
            break;
        //...
        }

    System.out.println("Expanded value = " + value);
}

Upvotes: 1

gkrls
gkrls

Reputation: 2664

String input = "3k";

String output = input.replaceAll("[Kk]", "000");

int outputAsInt = Integer.parseInt(output);

Upvotes: 0

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