[英]String list with comma separated values to int list
作為較大程序的一部分,我需要將用逗號分隔的值的字符串列表轉換為必須以特定方式排列信息的Int列表。 換句話說,我有以下字符串listA:
**ListA(string)**
[0] "4, 0, 7, -1,"
[1] "0, 1, 7, -1,"
[2] "7, 1, 6, -1,"
我想將其轉換為此int ListB:
**List B(int)**
[0] {int[4]}
[0] 4
[1] 0
[2] 7
[3] -1
[1] {int[4]}
[0] 0
[1] 1
[2] 7
[3] -1
[2] {int[4]}
[0] 7
[1] 1
[2] 6
[3] -1
我一直在試圖找出方法,但我沒有設法正確。
如果您能幫助我,我將不勝感激!
非常感謝!
嘗試:
var listB = new List<string>() { "4, 0, 7, -1,", "0, 1, 7, -1,", "7, 1, 6, -1," }
.Select(
x => x.TrimEnd(',') //removing last ","
.Split(',') //splitting string into array by ","
.Select(int.Parse) //parsing string to int
.ToList()
).ToList();
使用LINQ可以輕松完成
var a = new List<string> {"1, 2, 3, 4", "5, 6, 7, 8"};
List<int[]> b = a.Select(s => s.Split(new [] {", "}, StringSplitOptions.RemoveEmptyEntries).Select(int.Parse).ToArray()).ToList();
使用LINQ更為簡潔,但這是您可以完成同一件事的另一種方式,只是將它們分開。
var stringList = new List<string>() { "4, 0, 7, -1,", "0, 1, 7, -1,", "7, 1, 6, -1," };
var intList = new List<int[]>();
foreach(var str in stringList)
{
// Call Trim(',') to remove the trailing commas in your strings
// Use Split(',') to split string into an array
var splitStringArray = str.Trim(',').Split(',');
// Use Parse() to convert the strings as integers and put them into a new int array
var intArray = new int[]
{
int.Parse(splitStringArray[0])
,int.Parse(splitStringArray[1])
,int.Parse(splitStringArray[2])
,int.Parse(splitStringArray[3])
};
intList.Add(intArray);
}
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