有人可以解釋這個java代碼

Question

這是Zyflair

的topcoder SRM 569 DIV 2 problem 250的解決方案我無法理解的代碼或它是如何工作的可以有人解釋或簡化它。

public int countSupervisors(int[] students, int Y, int J){ 
    for(int i = 0,Y2 = Y + (Y = 0),J2=J+(J=0) ;i<students.length; i++,Y +=students [i -1 ]){ 
    J =Math.max(J,-(Math.max(0, students[i]-Y2)+J2-1)/J2+(students[i] = (students[i]+J2-1)/J2)); 
     } 
    return Y-J; 
} 

Answer 1

我真的沒有時間，現在要研究的問題，但這裏是一個有點簡單化：

// Y2 = Y + (Y = 0) 
int Y2 = Y; 
Y = 0; 

// J2 = J + (J = 0) 
int J2 = J; 
J = 0; 

// Note that, since we've just set Y and J to 0, 
// we may as well have used different variables 

for (int i = 0; i < students.length; i++) 
{ 
    int temp = (students[i] + J2 - 1)/J2; 
    J = Math.max(J, -(Math.max(0, students[i] - Y2) + J2 - 1)/J2 + temp); 
    Y += temp; 
} 
return Y-J;