如何使用方法初始化類中的字符串數組？private static String[] strNrs2 = {"Zero","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"}; private static String[] colo = arr();private String[] arr(){ String[] str99 = new String[strNrs2.length]; for (int i = 0; i<strNrs2.length;i++){ str99[i]= new StringBuilder(strNrs2[i]).reverse().toString(); } return str99; }我要這個 ：private static String[] strNrs2 = {"Zero","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"};看起來像這樣： private static String[] strNrs = {"oreZ","enO","owT","eerhT","ruoF","eviF","xiS","neveS","thgiE","eniN"};但我只想做一次。因為我計劃循環使用該數組的方法數百萬次。因此它會大大降低我的運行速度。完整代碼： public class IntToStr { private static String[] strNrs2 = {"Zero","One","Two","Three","Four","Five","Six","Seven","Eight","Nine"}; public static String intToStr(int nr) { StringBuilder str = new StringBuilder(""); while (nr>0) { int pop = nr%10; nr= nr/10; str.append(new StringBuilder(strNrs2[pop]).reverse().toString()); //By using this str.append(strNrs[pop]); runtime will increase considerably. } return str.reverse().toString(); } public static void main(String[] args) { for (int i = 0; i<10000000;i++) intToStr(5555555); System.out.println("Finished"); }}
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MMMHUHU
TA貢獻1834條經驗 獲得超8個贊
下面的數組初始化：
private static String[] colo = arr();
不起作用，因為arr()它是一個非靜態方法，所以它不能在初始化變量的靜態上下文中調用static。
您必須創建arr()一個static方法才能使該static數組初始化工作：
private static String[] arr() {
...
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