最近遇到一個問題,比較有意思的是要刪除String[]中的多個元素,而要刪除元素的數組是double[] 型的:
String items[] = {"1","2","3","4","5"};
double[] need_del_items = {2,3};
完整代碼:
String items[] = {"1","2","3","4","5"};
for(String a:items)
System.out.println(a);
double[] need_del_items = {2,3};
List<String> list1=Arrays.asList(items);
List<String> arrList = new ArrayList<String>(list1); //這句話的重要性在上一節blog中有講到
/* 主要是下面兩行 */
java.text.NumberFormat NF = java.text.NumberFormat.getInstance();
//設置數的小數部分所允許的最小位數,避免小數位有多余的0
NF.setMinimumFractionDigits(0);
for(double a:need_del_items)
{
String b = NF.format(a);
arrList.remove(b);
}
arrList.toArray();
System.out.println(arrList);
運行結果:
1
2
3
4
5
[1, 4, 5]