33 lines
1.1 KiB
Java
33 lines
1.1 KiB
Java
// Sum.java
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public class Sum {
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public static void main(String[] args) {
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int sum = 0;
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for (String argument : args) {
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StringBuilder number = new StringBuilder(); // we will form numbers here using StringBuilder
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for (char c : argument.toCharArray()) {
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if (!Character.isWhitespace(c)) {
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// if character is not whitespace
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number.append(c); // concatenate new digit
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} else {
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// if character is whitespace
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if (!number.isEmpty()) {
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// if number is not empty
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sum = sum + Integer.parseInt(number.toString()); // add number to sum
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}
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number = new StringBuilder(); // empty the number by creating new empty StringBuilder
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}
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}
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// check for any remaining digits in number
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if (!number.isEmpty()) {
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// if number is not empty
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sum = sum + Integer.parseInt(number.toString()); // add number to sum
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}
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}
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System.out.println(sum);
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}
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}
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