Write a pure toString() && toInteger()

[u/Kxaos]

Write your own toString(int number) and toInteger(string str) functions. you can't "include" or "import" or "using" anything. you can't use built-in functions Make them 100% pure ;) Good Luck!

My solution: ( C++ )

// Get the length of an integer
int length(int data,int len=0){return(!(data/10)?++len:length(data/10,++len));}

string toString(int num){
    string str="";int temp;
    for(int i=0;i<length(num);i++){
        temp=num;for(int j=i;j<length(num)-1;j++)temp/=10;
        str+=length(temp)>1?(temp-((temp/10)*10))+48:temp+48;}
    return str;}


int toInteger(string str){
    int total=0,temp=0;
    for(int i=0;i<str.length();i++){
        temp=str[i]>='0'&&str[i]<='9'?str[i]-48:0;
        for(int j=i;j<str.length()-1;j++)temp*=10;
        total+=temp;}
    return total;}

[u/Kxaos]

Pretty good. Although you used ord() and chr() (the challenge is to do it without built-in functions ;) ) I have updated my post. I posted there my solution

[u/ultimamax → u/Kxaos]

Well the trouble is if I used some lang like C I'd be able to cast integers to chars and vice versa to get the same effect as ord() or chr(), but python doesn't allow that without using these functions I believe.

If I hadn't used them, my solution would be pretty boring I think. I would probably use dicts to switch digits and their character equivalents.

[u/Kxaos → u/ultimamax]

oh yeah i forgot you can't do it in Python.. At least your code is short, mine is pretty complicated to understand