[英]populating 2d array with two 1d arrays in java
I have 2 1d arrays and im trying to populate them into a single 2d array in JAVA. 我有2个1d数组,我试图将它们填充到JAVA中的单个2d数组中。
For instance: 例如:
x[] = {2,5,7,9}
y[] = {11,22,33,44}
The results should then be: 结果应该是:
result[][] = {{2,5,7,9}, {11,22,33,44}}
How do I go about this? 我该怎么做? I currently have something like this:
我目前有这样的事情:
for(int row = 0; row < 2; row++) {
for(int col = 0; col == y.length; col++) {
???
}
}
Im sort of stuck from there... 我有点卡在那里......
2D array is an array of arrays. 2D数组是一个数组数组。 So why don't you try this?
那么你为什么不尝试这个呢?
int result[][] = {x,y};
And to make sure that it is so simple and works, test this: 并确保它如此简单和有效,测试这个:
for(int i=0; i<result.length; i++)
{
for(int j=0; j<result[0].length; j++)
System.out.print(result[i][j]+ " ");
System.out.println();
}
Try this: 试试这个:
ArrayList<Integer[]> tempList = new ArrayList<Integer[]>();
tempList.add(x);
tempList.add(y);
Integer result[][] = new Integer[tempList.size()][];
result = tempList.toArray(tempList);
You have to revert the row and column indices 您必须还原行和列索引
for(int row = 0; row < 2; row++)
{
for(int col = 0; col = y.length; col++)
{
....
}
}
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