Data-Structures-and-Algorithms/Java/String/RomanToInteger.java at main · codemistic/Data-Structures-and-Algorithms · GitHub

Name: Data-Structures-and-Algorithms/Java/String/RomanToInteger.java at main · codemistic/Data-Structures-and-Algorithms · GitHub
Rating: 4.6 (524 reviews)
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classSolution {
publicintromanToInt(Strings) {
intlen = s.length();
intans = 0;
for (inti = 0; i < len; i++) {
charch = s.charAt(i);
intcur = getValue(ch);
if (i < len - 1 && cur < getValue(s.charAt(i + 1))) {
ans -= cur;
 } else {
ans += cur;
 }
 }

returnans;
 }

privateintgetValue(charch) {
intans = 0;
switch (ch) {
case'I':
ans = 1;
break;

case'V':
ans = 5;
break;

case'X':
ans = 10;
break;

case'L':
ans = 50;
break;

case'C':
ans = 100;
break;

case'D':
ans = 500;
break;

case'M':
ans = 1000;
break;

default:
break;
 }

returnans;
 }
}