Title:Given a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999.这道题和上道题相反,将罗马数字转换成数字。两...
Ican be placed beforeV(5) andX(10) to make 4 and 9. Xcan be placed beforeL(50) andC(100) to make 40 and 90. Ccan be placed beforeD(500) andM(1000) to make 400 and 900. Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 t...
I can be placed before V (5) and X (10) to make 4 and 9. X can be placed before L (50) and C (100) to make 40 and 90. C can be placed before D (500) and M (1000) to make 400 and 900. Given a roman numeral, convert it to an integer. Input is guaranteed to be wi...
代码(Go) // chToNum[ch] 表示符号 ch 对应的值varchToNum=map[byte]int{'I':1,'V':5,'X':10,'L':50,'C':100,'D':500,'M':1000,}funcromanToInt(sstring)int{// ans 直接初始化为最后一个符号对应的值,// 因为最后一个符号后面没有其他符号,所以必定是直接加到结果中的ans:=chToNum[...
Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. Example 1: Input: "III" Output: 3 Example 2: Input: "IV" Output: 4 Example 3: Input: "IX" Output: 9 Example 4: ...
letcode-13-roman to integer python: sum=0 d={'I':1,'V':5,'X':10,'L':50,'C':100,'D':500,'M':1000} for i in range(len(s)-1): if d[s[i]]<d[s[i+1]]: sum=sum-d.get(s[i]) else: sum+=d.get(s[i])
C can be placed before D (500) and M (1000) to make 400 and 900. Given a roman numeral, convert it to an integer. Input is guaranteed to be within the range from 1 to 3999. Example 1: Input: "III" Output: 3 Example 2: ...
4、当左边比右边小的时候 需要result = result+dic[c]-2*tmp 用笔算算,😁 5、时间复杂度O(n) 6、空间复杂度O(1) Swift代码实现: funcromanToInt(_s:String)->Int{letdic:[Character:Int]=["I":1,"V":5,"X":10,"L":50,"C":100,"D":500,"M":1000]varres=0vartmp=0forcins{letnum...
Convert and ConvertBack. If I wanted to have a two way binding (I.e. let the user type in a roman numeral, and parse it back to an integer), I'd have to supply the ConvertBack. But, I didn't feel like implementing that part right now....
Convert and ConvertBack. If I wanted to have a two way binding (I.e. let the user type in a roman numeral, and parse it back to an integer), I'd have to supply the ConvertBack. But, I didn't feel like implementing that part right now....