[英]How can split string not include first character?
i have some text and split
by "-"
but i don't want split
first character: EX:我有一些文本并用
"-"
split
,但我不想split
第一个字符:EX:
"1-2" => [1,2]
"-1-2" => [-1,2]
"1-2-3" => [1,2,3]
"-1-2-3" => [-1,2,3]
If i use this code, it will all:如果我使用此代码,它将全部:
strValue.Split("-");
How can split string not include first character?拆分字符串如何不包含第一个字符?
Looks to me like you need to split on '-' and if the first entry in the array is empty, then assume that the second entry is a negative number在我看来,您需要在“-”上拆分,如果数组中的第一个条目为空,则假设第二个条目是负数
var x = input.Split('-');
IEnumerable<string> y = x;
if(string.IsNullOrWhiteSpace(x[0])){
x[1] = "-"+x[1];
y= x.Skip(1);
}
var z = y.Select(int.Parse).ToArray();
Or flip it after:或者在之后翻转它:
var z = input.Split('-').Select(int.Parse).ToArray();
if(input[0] == '-')
z[0] *= -1;
My solution is very simple, and without number conversion.我的解决方案很简单,无需数字转换。 Since, in case you have something like "-ab", it does not convert to a number .
因为,如果你有类似“-ab”的东西,它不会转换为数字。 And the question says about characters in some text.
问题是关于某些文本中的字符。
string[] list;
if (str.StartsWith("-")) {
list = str.Substring(1).Split('-');
list[0]= "-" + list[0];
} else {
list = str.Split('-');
}
Here is a C# Fiddle to play with: https://dotnetfiddle.net/C2qERs这是一个 C# 小提琴: https://dotnetfiddle.net/C2qERs
public string[] Spliting(string toSplit)
{
string[] result=null;
if (toSplit[0].Equals('-'))
{
result = (toSplit.Substring(1)).Split("-");
result[0] = "-" + result[0];
}
else
{
result = toSplit.Split("-");
}
return result;
}
string input = "-1-2-3";
int[] result = input.Substring(1).Split('-').Select(int.Parse).ToArray();
if(input[0] == '-')
result[0] *= -1;
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