我有一个字符串数组
字符串ipist[] = { "817","818","819","820","821" };
我的要求是输入的数字是否为2
ipist应该是
ipist[] = { "817","818" };
对于输入4
ipist[] = { "817","820" }
基于输入需要保留数组元素
根据输入的大小保留数组元素
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问答
ychmail 回答：根据输入的大小保留数组元素
使用Arrays.copyOfRange(T[] original,int from,int to) （Java 6 +）：
String[] ipist = { "817","818","819","820","821" };
int input = 3;
ipist = Arrays.copyOfRange(ipist,input);
System.out.println(Arrays.toString(ipist));
输出
[817,818,819]