[英]Is it possible in java to get multiple inputs in a single line??
我試圖在一行代碼中獲取多個輸入。例如在c ++中,我們可以像這樣-
int a,b,c;
cin>>a>>b>>c;
Java中也有可能嗎?
您可以為此使用數組,例如:
public static void main(String[] args) {
int[] values = new int[3];
Scanner in = new Scanner(System.in);
for(int i = 0; i < values.length; i++) {
values[i] = in.nextInt();
}
System.out.println(Arrays.toString(values));
}
更新2
在Java 8中,上述解決方案可以使用較短的版本:
Scanner in = new Scanner(System.in);
Integer[] inputs = Stream.generate(in::nextInt).limit(3).toArray(Integer[]::new);
更新1
還有另一種方法,更接近cin
:
public class ChainScanner {
private Scanner scanner;
public ChainScanner(Scanner scanner) {
this.scanner = scanner;
}
public ChainScanner readIntTo(Consumer<Integer> consumer) {
consumer.accept(scanner.nextInt());
return this;
}
public ChainScanner readStringTo(Consumer<String> consumer) {
consumer.accept(scanner.next());
return this;
}
}
public class Wrapper {
private int a;
private int b;
private String c;
public void setA(int a) {
this.a = a;
} /* ... */
}
public static void main(String[] args) {
ChainScanner cs = new ChainScanner(new Scanner(System.in));
Wrapper wrapper = new Wrapper();
cs.readIntTo(wrapper::setA).readIntTo(wrapper::setB).readStringTo(wrapper::setC);
System.out.println(wrapper);
}
如果我正確理解了您的問題,那么您正在搜索如下內容:
a = b = c = 3;
評估如下:
a = (b = (c = 3))
等效於:
c = 3;
b = c;
a = b;
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