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Thread: how can count

  1. #1
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    Unhappy how can count

    how can i count in example the numbers of 1's in 101e
    the answer should be 2

  2. #2
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    Default Re: how can count

    public class Main {
     
        public static void main(String[] args) {
            String string1 = "10010101010101";
            int sum = 0;
     
     
            for (int index = 0; index < string1.length(); index++) {
     
                char aChar = string1.charAt(index);
     
                if (aChar == '1') {
                    sum =sum +1;
                }
            }
            System.out.println(sum);
        }
     
     
    }

    You define your string of choice, named string1, you define a counter sum, and then you parse your string character by character and compare it to 1. If 1st character is = 1, then sum =1 else sum = 0, if second character is =1 you add one to sum, or else zero, and you keep doing that inside a for loop, until you reach the end of your string (in other words the last character, whos posistion is equal to strings length).[COLOR="Silver"]

  3. #3
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    Default Re: how can count

    think you

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