Unix ls UVA - 400

问题类型 ：字符数组，STL，输出控制。

03pie’s solution for [UVA-400]

#include<iostream> 
#include<string> 
#include<algorithm> 

using namespace std;

const int maxn=100+5;
const int maxcol=60;
string filenames[maxn];

void print(const string& s,int len,char extra){
    cout<<s;
    for(int i=0;i<len-s.length();i++)
        cout<<extra;
}
int main(){
    //    freopen("F://inp.txt","r",stdin);
    int n;
    while(cin>>n){
        int M=0;
        for(int i=0;i<n;i++){
            cin>>filenames[i];  
            M=max(M,(int)filenames[i].length());
        }   
        int cols=(maxcol-M)/(M+2)+1,rows=(n-1)/cols+1;
        print("",60,'-');
        cout<<"\n";
        sort(filenames,filenames+n);
        for(int r=0;r<rows;r++){
            for(int c=0;c<cols;c++){
                int idx=c*rows+r;
                if(idx<n)print(filenames[idx],c==cols-1?M:M+2,' ');
            }
            cout<<"\n";
        }
    }
    return 0;
}