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[英]Merge function but instead of having multiple arrays as parameters, it takes only one two dimensional array as a parameter( array of arrays)?
[英]Merge two one dimensional String arrays to a single array with delimiter
我有兩個 arrays:
a = ["a","b","c"]
b = ["d","e","f"]
如何將它們合並到一個數組中,如下所示:
c = ["a=d", "b=e", "c=f"]
使用等號 ( =
) 作為合並字符串之間的分隔符?
你可以在循環的幫助下做到這一點,例如
import java.util.Arrays;
public class Main {
public static void main(String[] args) {
String[] a = { "a", "b", "c" };
String[] b = { "d", "e", "f" };
String[] result = new String[a.length];
for (int i = 0; i < Math.min(a.length, b.length); i++) {
result[i] = a[i] + "=" + b[i];
}
System.out.println(Arrays.toString(result));
}
}
Output:
[a=d, b=e, c=f]
在Oracle 的本教程中了解有關循環的更多信息。
使用IntStream
:
import java.util.Arrays;
import java.util.stream.IntStream;
public class Main {
public static void main(String[] args) {
String[] a = { "a", "b", "c" };
String[] b = { "d", "e", "f" };
String[] result = IntStream
.range(0, Math.min(a.length, b.length))
.mapToObj(i -> a[i] + "=" + b[i])
.toArray(String[]::new);
System.out.println(Arrays.toString(result));
}
}
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