Simple for loop in java

Question

I have two arrays declared as fMarksL4[6] and marksL4[12] . I have taken the input from user to all values of marksL4[] and want to assign them to fMarksL4[] as following. Is there a simple way to do this using a loop?

fMarksL4[0] = (marksL4[0] + marksL4[1]) / 2;
fMarksL4[1] = (marksL4[2] + marksL4[3]) / 2;
fMarksL4[2] = (marksL4[4] + marksL4[5]) / 2;
fMarksL4[3] = (marksL4[6] + marksL4[7]) / 2;
fMarksL4[4] = (marksL4[8] + marksL4[9]) / 2;
fMarksL4[5] = (marksL4[10] + marksL4[11]) / 2;

Answer 1

Yes, notice that you are accessing the marksL4 at double (and double plus one) the current fMarksL4 index. So you could loop like

for (int i = 0; i < fMarksL4.length; i++) {
    int j = i * 2;
    fMarksL4[i] = (marksL4[j] + marksL4[j + 1]) / 2;
}

Answer 2

Yes. You can do this using loops

void solve(){
int j=0;
for(int i=0;i<6;i++){
  fMarksL4[i] = (marksL4[j] + marksL4[j+1])/2
  j=j+2;
}

}

Answer 3

This loop should work

for(int i=0; i< fMarksL4.length ; i++){
        fMarksL4[i] = (marksL4[2 * i] + marksL4[2 * i + 1])/2;
    }