41 lines
1.1 KiB
Java
41 lines
1.1 KiB
Java
package sum;
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import java.math.BigInteger;
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/**
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* @author Nikita Doschennikov (me@fymio.us)
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*/
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public class SumBigIntegerOctal {
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public static void main(String[] args) {
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BigInteger res = new BigInteger("0");
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for (String arg : args) {
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StringBuilder builder = new StringBuilder();
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for (char c : arg.toCharArray()) {
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if (!Character.isWhitespace(c)) {
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builder.append(c);
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} else {
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res = res.add(compute(builder.toString()));
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builder = new StringBuilder();
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}
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}
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res = res.add(compute(builder.toString()));
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}
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System.out.println(res);
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}
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static BigInteger compute(String num) {
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BigInteger res = new BigInteger("0");
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if (num.isEmpty()) {
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res = res.add(BigInteger.ZERO);
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} else if (num.endsWith("o") || num.endsWith("O")) {
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res = res.add(new BigInteger(num.substring(0, num.length() - 1), 8));
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} else {
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res = res.add(new BigInteger(num));
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}
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return res;
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}
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}
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