[英]How to display the strings from a list of strings that contain all the chars from a char array? c#
我有一個字符串列表和一個 char 字母數組。 我想在字符串中顯示包含數組中所有字符的字符串。
List-list of strings charsArray-array of chars Final-帶有排序單詞的最終列表
例子
charsArray {'a','e','i','z'}
List {"abcde","iertaz","aio","zzeml","amoioze"}
Final(output) iertaz amoioze
我試過這個
foreach(string word in List)
{
bool contain = true;
foreach (char letter in charsArray}
{
if (word.Contains(letter) && contain)
{
Final.Add(word);
}
else
{
contain = false;
}
}
}
foreach (string word in Final)
{
Console.WriteLine(word);
}
有
char[] chars = new char[] {
'a','e','i','z'};
List<string> list = new List<string>() {
"abcde", "iertaz", "aio", "zzeml", "amoioze" };
我們可以嘗試從chars
中減去word
:如果chars
中的所有字符都被刪除,那么這個word
就是我們想要的:
using System.Linq;
...
var result = list
.Where(word => !chars.Except(word).Any())
.ToList();
此解決方案使用All
:
var charsArray = new char[] { 'a', 'e', 'i', 'z' };
var L = new[] { "abcde","iertaz","aio","zzeml","amoioze"}.ToList();
var final = L.Where(word => charsArray.All(a => word.Contains(a))).ToList();
結果是正確的:
伊爾塔茲
阿莫伊澤
這個怎么樣,在這里演示
public static IEnumerable<IEnumerable<T>> ContainsAll<T>(
this IEnumerable<IEnumerable<T>> source,
IEnumerable<T> search,
IEqualityComparer<T> comparer = default)
{
ArgumentNullException.ThrowIfNull(source);
ArgumentNullException.ThrowIfNull(search);
comparer ??= EqualityComparer<T>.Default;
var searchSet = search is HashSet<T> ss && ss.Comparer == comparer
? ss
: new HashSet<T>(search, comparer);
return source.Where(item => searchSet.IsSubsetOf(item));
}
你可以這樣使用,
var words = new[] {"abcde","iertaz","aio","zzeml","amoioze"};
var search = new[] {'a','e','i','z'};
foreach (string match in words.ContainsAll(search))
{
Console.WriteLine(match);
}
如果第一個字符在單詞中,則在此行中添加單詞,因為 contains 為真
...
if (word.Contains(letter) && contain)
{
Final.Add(word);
}
...
你快到了,你只需要稍作修改就可以避免上面的錯誤
foreach(string word in List)
{
bool contain = true;
foreach (char letter in charsArray}
{
if (!word.Contains(letter))
{
contain = false;
}
}
if (contain)
{
Final.Add(word);
}
}
foreach (string word in Final)
{
Console.WriteLine(word);
}
您想查找包含charsArray
中所有字符的字符串。 這意味着charsArray
中的每個字符都應包含在目標字符串中。
using System.Linq;
var List = new List<string>() { "abcde", "iertaz", "aio", "zzeml", "amoioze" };
var charsArray = new char[] { 'a','e','i','z' };
var result = List.FindAll(word => charsArray.All(letter => word.Contains(letter)));
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