Happyleetcode37:add Binary

Given binary strings, return their sum (also a binary string).

For example,
A = "11"
b = "1"
Return "100" .

This problem is very simple, not much to say, the code on the

classSolution { Public:    stringAddbinary (stringAstringb) {intLengtha =a.length (); intLENGTHB =b.length (); intIndexa = A.length ()-1; intIndexb = B.length ()-1; intres =0;//Set Rounding        stringresult; Map<Char,int>mapping; mapping['1'] =1; mapping['0'] =0; intvalue;  while(indexa>=0|| indexb>=0)        {                        if(Indexa <0) Value=0+ Mapping[b[indexb]] +Res; Else if(Indexb <0) Value= Mapping[a[indexa]] +0+Res; Elsevalue= Mapping[a[indexa]] + MAPPING[B[INDEXB]] +Res; if(Value >=2) {res=1; Value%=2; }            Else{res=0; } result.push_back (Value+'0'-0); Indexa--; Indexb--; }        if(res = =1) Result.push_back (res+'0'-0);        Reverse (Result.begin (), Result.end ()); returnresult; }};

Happyleetcode37:add Binary