[英]Convert Jagged Array to IEnumerable<KeyValuePair<int,int>>?
I have this Jagged Array : 我有这个锯齿数组:
( n
is given at compile time , so please assume that all values are already there) (
n
是在编译时给出的,因此请假定所有值都已经存在)
int[][] jagged = new int[n][];
jagged[0] = new int[3];
jagged[0][0] = 2; // Please ignore the dummy values....
jagged[0][1] = 55;
jagged[0][2] = 4;
jagged[1] = new int[3];
jagged[1][0] = 6;
jagged[1][1] = 3;
jagged[1][2] = 7;
...
...
jagged[n] = new int[3];
jagged[n][0] = 9;
jagged[n][1] = 5;
jagged[n][2] = 1;
I want to create a IEnumerable<KeyValuePair<int,int>>
from this structure where : 我想从此结构创建
IEnumerable<KeyValuePair<int,int>>
,其中:
key is : dummy value
and the value is the n
( dummy value is unique) 关键是:
dummy value
,该数值是n
(哑数值是唯一的)
(aside info - I need to map pictures to users) (除了信息-我需要将图片映射到用户)
So for group #1
I want: 因此,对于组
#1
我想:
{2-> 0}
{55-> 0}
{4-> 0}
for group #2
对于
#2
组
{6 -> 1}
{3-> 1}
{7-> 1}
...
...
etc
But as a whole list : 但总体而言:
So final result should be 1 IEnumerable
of KeyValuePair<int,int>
: 因此最终结果应为
KeyValuePair<int,int>
1 IEnumerable
:
{2-> 0}
{55-> 0}
{4-> 0}
{6 -> 1}
{3-> 1}
{7-> 1}
...
{9 -> n}
{5-> n}
{1-> n}
Question : 题 :
foreach (var t in jagged.SelectMany((row, rowIndex) => row.Select(value => new KeyValuePair<int, int>(value, rowIndex))))
{
Console.WriteLine("{0} - {1}", t.Key, t.Value);
}
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