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algorithm notes: leetcode#504 base 7

admin 11月 12, 2020 0

Problem

Solution

Initial thoughts

Python implementation

class :
    def convertToBase7(self, num):
        """
        :type num: int
        :rtype: str
        """
        if not num:
            return str(num)
        n = abs(num)
        res = ""
        while n:
            res = str(n%7)+res
            n = n//7
        return res if num > 0 else "-"+res

Java implementation

class  {
    public String convertToBase7(int num) {
        if(num==0){ return "0"; }
        int n = Math.abs(num);
        String res = "";
        while(n>0){
            res = Integer.toString(n%7)+res;
            n /= 7;
        }
        return num > 0? res : "-"+res;
    }
}

Links

504. Base 7
(中文版) 算法笔记: 力扣#504 七进制数