比较 C# 中的两个字符串数组
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Comparing two string arrays in C#
提问by Wes Field
Say we have 5 string arrays as such:
假设我们有 5 个字符串数组：
string[] a = {"The","Big", "Ant"};
string[] b = {"Big","Ant","Ran"};
string[] c = {"The","Big","Ant"};
string[] d = {"No","Ants","Here"};
string[] e = {"The", "Big", "Ant", "Ran", "Too", "Far"};
Is there a method to compare these strings to each other without looping through them in C# such that only a and c would yield the boolean true? In other words, all elements must be equal and the array must be the same size? Again, without using a loop if possible.
有没有一种方法可以将这些字符串相互比较而无需在 C# 中循环遍历它们，这样只有 a 和 c 会产生布尔值 true？换句话说，所有元素必须相等并且数组必须相同大小？同样，如果可能，不使用循环。
采纳答案by Ahmed KRAIEM
You can use Linq:
您可以使用 Linq：
bool areEqual = a.SequenceEqual(b);
回答by Darren
Try using Enumerable.SequenceEqual:
var equal = Enumerable.SequenceEqual(a, b);
回答by Charleh
If you want to compare them all in one go:
如果您想一口气比较它们：
string[] a = { "The", "Big", "Ant" };
string[] b = { "Big", "Ant", "Ran" };
string[] c = { "The", "Big", "Ant" };
string[] d = { "No", "Ants", "Here" };
string[] e = { "The", "Big", "Ant", "Ran", "Too", "Far" };
// Add the strings to an IEnumerable (just used List<T> here)
var strings = new List<string[]> { a, b, c, d, e };
// Find all string arrays which match the sequence in a list of string arrays
// that doesn't contain the original string array (by ref)
var eq = strings.Where(toCheck =>
strings.Where(x => x != toCheck)
.Any(y => y.SequenceEqual(toCheck))
);
Returns both matches (you could probably expand this to exclude items which already matched I suppose)
返回两个匹配项（您可以扩展它以排除我认为已经匹配的项目）
回答by Dejan Ciev
if (a.Length == d.Length)
{
var result = a.Except(d).ToArray();
if (result.Count() == 0)
{
Console.WriteLine("OK");
}
else
{
Console.WriteLine("NO");
}
}
else
{
Console.WriteLine("NO");
}
回答by Manish Vadher
if you want to get array data that differ from another array you can try .Except
如果你想获得与另一个数组不同的数组数据，你可以尝试 .Except
string[] array1 = { "aa", "bb", "cc" };
string[] array2 = { "aa" };
string[] DifferArray = array1.Except(array2).ToArray();
Output:{"bb","cc"}
输出：{"bb","cc"}
