c# - Grouping strings based on two keys -


I have a list of strings with each string, which is different from # . >

I want to do group strings such as 1 # 2 and 2 # 1 will be in the same group ..

For example, take this list as an example 

  {"1 # 2", "1 # 6", "1 # 2", "2 # 1"} < / Code>  
 I want to add this list to the group like this  
  key = 1 # 2 or 2 # 1 value = {"1 # 2", "1 # 2", "2 # 1"} key = 1 # 6 or 6 # 1 value = {"1 # 6"}   
 So I base two different keys I want to group the string on  
 I tried  
  list.GroupBy (x => x);   
 But in this three key,  1 # 2 ,  2 # 1 ,  1 # 6  The group performs  1 # 2 or 2 # 1 ,  1 # 6    
 
 
 You can try to do something like this:  
  void Main () {var list = new string [] {" 1 # 2 ", "1 # 2", "2 # 1"}; Var result = list.GroupBy (x => x.Split ('#'). Order b (y = & gt; y). Overgraduate (a, b) => a + "#" + b )); // should output only one key - foreach # 2 (result in var key) {Console.WriteLine (key); }}   
 This should work, even if there are more than 2 values, etc. 1 # 2 # 3

Comments

Post a Comment

Popular posts from this blog

Java - Error: no suitable method found for add(int, java.lang.String) -

I'm in the middle of homework work and I'm stuck. At this point in my code, I think that I should have a GUI window that opens and allows me to type "inserted text number". Notice is not going anywhere but at this point, If I pass through the problem then it will be in a linked list. I am getting two of the same error for the lines. Add (index, element); And I can not seem to get past it, there is no suitable method for the error "add (int, java. string string)". Code is below, please advise. To clarify - this will not be a method error because it is a linked list. There should not be any way involved. import java.awt. *; Import java.awt.event. *; Import javax.swing. *; Import java.util. *; Import java.util.Scanner; Import java.util.LinkedList; Public class TopTenList JFrame {Private TopTenList tt; See the Private JTextArea list; Private JTextField cmdTextField; Private JTextField resultsTestfield; // This GUI window is the code for the public toptist...
Read more

java - JPA TypedQuery: Parameter value element did not match expected type -

I am using JPA 2.0 and getting the following code in the DAO layer: Public Zero Test () {string key = "status"; String [] Conditions = {"A", "B"}; & Lt; TestTable & gt; Results = Search (Keys, Conditions); } Public listing & lt; TestTable & gt; Search (string key, object value error) {string sql = "test ndf to testlet and jade nand." + Key + "in:" + key; TypedQuery & LT; TestTable & gt; Query = entityManager.createQuery (SQL, TestTable.class); Query.setParameter (key, Arrays.asList (valueArr)) / *** Error Line *** Return query.getResultList (); } In the above error line, it throws the following exception: java.lang.IllegalArgumentException: parameter value element [[Ljava.lang.String; @ cbe5bc] did not match the expected type [java.lang.String] Why is this expected type string while actually this string []? Please help! Note: This is derived from the normal routine and is a simplified code. I can no...
Read more

c++ - static template member variable has internal linkage but is not defined -

Yes, I know, there is a question with almost the same title, but it refers to a different situation. Error message) In my case, I have a .cpp file with a big named designation name (implementation details). There is a property class template with a static data member in that name space, which I need to access from outside the unknown namespace. I give it a little bit of meat: file.hpp namespace Bar {template & lt; Typename A & gt; Struct foo {static_assert (is_same & lt; a, float & gt; :: value} is_same & lt; a, double>: value, ""); Fixed zero set_static_var (a const & x); // ...}; } and file.cpp namespace {template & lt; Typename A & gt; Struct foo_traits {// supports the implementation of several static code bars: foo & lt; & Gt; Fixed A data; }; The template's & lt; & Gt; Float foo_traits & lt; Float & gt; :: datum; // No change if this is in the global namespace template & lt; & Gt; Doub...
Read more