部分数组的java for-each循环

Question

我知道如何使用 for-each 循环遍历整个数组，如下所示:

for(int d : arrayname){
    do something

但是您如何使用 for-each 循环来循环遍历部分数组，就像我正在尝试做的那样是使用 for-each 循环仅遍历 5 月至 10 月的月份，即 [4] - [9] 计算热指数。这是我的代码片段，显示了我正在尝试做的事情:

// create array for KeyWestTemp
    double[] KeyWestTemp;
    KeyWestTemp = new double[12];

    // initialize array
    KeyWestTemp[0] = 70.3;
    KeyWestTemp[1] = 70.8;
    KeyWestTemp[2] = 73.8;
    KeyWestTemp[3] = 77.0;
    KeyWestTemp[4] = 80.7;
    KeyWestTemp[5] = 83.4;
    KeyWestTemp[6] = 84.5;
    KeyWestTemp[7] = 84.4;
    KeyWestTemp[8] = 83.4;
    KeyWestTemp[9] = 80.2;
    KeyWestTemp[10] = 76.3;
    KeyWestTemp[11] = 72.0;

    // create array for KeyWestHumid
    int[] KeyWestHumid;
    KeyWestHumid = new int[12];

    // initialize array
    KeyWestHumid[0] = 69;
    KeyWestHumid[1] = 67;
    KeyWestHumid[2] = 66;
    KeyWestHumid[3] = 64;
    KeyWestHumid[4] = 66;
    KeyWestHumid[5] = 69;
    KeyWestHumid[6] = 67;
    KeyWestHumid[7] = 67;
    KeyWestHumid[8] = 70;
    KeyWestHumid[9] = 69;
    KeyWestHumid[10] = 69;
    KeyWestHumid[11] = 70;

    // for-each loop for calculating heat index of May - October

[0] 是一月，[11] 是十二月

Answer 1

double[] mayOctober = Arrays.copyOfRange(KeyWestHumid, 4, 9);

并 foreach mayOctober 执行您要求的操作。

顺便说一句，在这种情况下最好使用传统循环。