68 | Text Justification |
class Solution { public: vector<string> fullJustify(vector<string> &words, int L) { if(words.empty()){ return words; } if(L==0){ return words; } const int N = words.size(); int curLen=0; int lastLen=0; vector<string> ans; vector<string> str; for(int i=0;i<N;i++) { if(str.size()>0) { curLen ++; } curLen += words[i].size(); if(curLen<=L) { str.push_back(words[i]); lastLen=curLen; } else { //over if(str.size()==1) { string newString = str[0]; if(L>str[0].size()) { newString += string(L-str[0].size(),' '); } ans.push_back(newString); } else { int tabCount = str.size()-1; int q = (L-lastLen)/tabCount; int r = (L-lastLen) - q*tabCount; string newString ; int j=0; for(;j<tabCount;j++) { newString += str[j]; if(j<r){ string spaces(q+2,' '); newString += spaces; } else { string spaces(q+1,' '); newString += spaces; } } newString += str[j]; ans.push_back(newString); } str.clear(); str.push_back(words[i]); lastLen = curLen = words[i].size(); } } if(str.size()==1) { string newString = str[0]; if(L>str[0].size()) { newString += string(L-str[0].size(),' '); } ans.push_back(newString); } else { int tabCount = str.size()-1; string newString ; int j=0; int len=0; for(;j<tabCount;j++) { newString += str[j]; newString +=" "; len+=str[j].size()+1; } newString += str[j]; len += str[j].size(); newString += string(L-len,' '); ans.push_back(newString); } return ans; } };
这题,其实没啥可说的,需要的是细心,这个是常见的阅读器排版问题。嗯,错过很多次,慢慢修改就对了。
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