# Can anybody help me for my code? It was thrown to runtime error. But the code works on my own laptop.

• ``````class Solution {
public:
string convert(vector<string>& words, int start, int last, int maxWidth );
vector<string> fullJustify(vector<string>& words, int maxWidth);
};

string Solution::convert(vector<string>& words, int start, int last, int maxWidth )
{
if ( start == last ){
int len = (int) words[start].size();
return words[start] + string( maxWidth-len, ' ' );
}
int wordsLen = 0;
for ( int i = start; i <= last; i++ )
wordsLen += (int) words[i].size();
int d = (maxWidth - wordsLen) / (last - start);
int r = (maxWidth - wordsLen) % (last - start);
string ret = "";
for ( int i = start; i < last; i++ ){
ret += words[i];
ret += string(d,' ');
if ( i < r + start ) ret += " ";
}
ret += words[last];
return ret;
}

vector<string> Solution::fullJustify(vector<string>& words, int maxWidth)
{
vector<string> ret;
int len = (int) words.size();
if ( len == 1 ) return vector<string>(1, words[0]);

int i = 0; int j; int lenj; int tmpLen;
while ( i < len ){
j = i;
tmpLen = 0; lenj = (int) words[j].size();
while ( tmpLen + lenj + 1 <= maxWidth + 1 && j < len ){
tmpLen += (lenj + 1);
j++;
lenj = (int) words[j].size();
}
j--;
string s = convert(words, i, j, maxWidth);
ret.push_back(s);
i = j+1;
}
return ret;
}``````

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