13. Roman to Integer (JAVA) Roman numerals are represented by seven different symbols:I,V,X,L,C,DandM. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, two is written asIIin Roman numeral, just two
方法二:switch case,从左向右遍历 //与第一种方法基本相同,从左向右publicstaticintromanToInt1(String s) {char[] ss =s.toCharArray();intret = toNumber(ss[0]);for(inti = 1; i < ss.length; i++) {if(toNumber(ss[i - 1]) <toNumber(ss[i])) {//ret - toNumber(ss[i - 1]) =...
LeetCode13 - Roman to Integer Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. 解题思路: 罗马数字是符号和加操作的一个组合。他基于以下七个符号。 II is 2, and XIII is 13. 罗马数字没有0,所以 207是CCVII,1066 is MLXVI. 计数...
public class Solution { public int romanToInt(String s) { int total = charToInt(s.charAt(0)); for(int i = 1; i < s.length(); i++){ int prev = charToInt(s.charAt(i-1)); int curr = charToInt(s.charAt(i)); if(curr <= prev){ total += curr; } else { total = tot...
LeetCode-Java-13. Roman to Integer 题目 Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For example, two is written as II in Roman numeral, just two one's added together. Twelve is ...
问Integer to Roman“不兼容的类型: int无法转换为布尔型[在MainClass.java中]”EN根据罗马数字的规则...
import java.util.Scanner; import java.util.Stack; public class RomanToInteger_13 { public static void main(String[] args) { System.out.println("Please input a roman numeral:"); @SuppressWarnings("resource") Scanner input = new Scanner(System.in); ...
0006-zigzag-conversion.cpp 0007-reverse-integer.cpp 0009-palindrome-number.cpp 0010-regular-expression-matching.cpp 0011-container-with-most-water.cpp 0012-integer-to-roman.cpp 0013-roman-to-integer.cpp 0014-longest-common-prefix.cpp 0015-3sum.cpp 0017-letter-combinations-of-a-phone-number.cpp 00...
0006-zigzag-conversion.cpp 0007-reverse-integer.cpp 0009-palindrome-number.cpp 0010-regular-expression-matching.cpp 0011-container-with-most-water.cpp 0012-integer-to-roman.cpp 0013-roman-to-integer.cpp 0014-longest-common-prefix.cpp 0015-3sum.cpp 0017-letter-combinations-of-a-phone-number.cpp 00...
A dictionary usually takes in the data in the form of key:value pairs, which makes it excellent for storing the data on the conversion of roman literals to integers.The following code makes use of classes and a dictionary to convert roman number to integer in Python....