Question

java 数组元素如何循环求和

float d[] = null;//定义一个空数组
float fmax =0;//定义一个消费最大值
int len = 0;//为消费数据的个数
try {
rs=RecordStore.openRecordStore("record", true);
len=rs.getNumRecords();
d=new float[len];
RecordEnumeration re=rs.enumerateRecords(null, null, false);
int Index=len-1;
byte[] date;
while(re.hasNextElement()){
try{
date=re.nextRecord();
ByteArrayInputStream bais = new ByteArrayInputStream(date);
DataInputStream is = new DataInputStream(bais);
taste16 cd=new taste16();
cd.date=new Date();
cd.date.setTime(is.readLong());
cd.mu=is.readFloat();
d[Index]=cd.mu;
Index -=1;
if(cd.mu>fmax){
fmax=cd.mu;
}
is.close();
bais.close();
}catch(IOException e){
e.printStackTrace();
}
}
rs.closeRecordStore();
re.destroy();
} catch (RecordStoreFullException e) {
e.printStackTrace();
} catch (RecordStoreNotFoundException e) {
e.printStackTrace();
} catch (RecordStoreException e) {
e.printStackTrace();
}
上面为读取的数组，该使用什么方法求读取数组中元素的和

Answer 1

float[] f = {1.0,2,3,4,5,6,7}
double sum = 0;
for(int i=0; i<f.length; i++) {
sum += f[i];
}