#include <iostream>
#include <fstream>
#include <vector>
#include <string>
#include <sstream>
#include <algorithm>
#include <map>

 std::multimap<std::string, std::string> getDict(std::istream& in)
 {
   std::vector<std::string> dict;
   std::string s;
   
   while (getline(in, s)) 
   {
     dict.push_back(s);
   }
   
   std::multimap<std::string, std::string> result;
   for (int i = 0; i < dict.size(); i++)
   {
     std::string sorted_word = dict.at(i);
     std::sort(sorted_word.begin(), sorted_word.end());
     result.insert({sorted_word, dict.at(i)});
   }
   
   return std::move(result);
 }

std::vector<std::string> aaa(std::string ana, std::multimap<std::string, std::string> &dict)
{
  std::string sorted_ana = ana;
  std::sort(sorted_ana.begin(), sorted_ana.end());
  
  std::vector<std::string> results;
  auto range = dict.equal_range(sorted_ana);
  for (auto it = range.first; it != range.second; ++it)
  {
      results.push_back(it->second);
  }
  return std::move(results);
}

int main() 
{
  std::ifstream file("dict.txt");

    if (!file.is_open()) 
    {
        std::cerr << "err\n";
        return -1;
    }
    
    std::multimap<std::string, std::string> dict = getDict(file);
    
    std::string w;
    std::vector<std::string> words;
    
    while (getline(std::cin, w, ' '))
    {
      words.push_back(w);
    }
    
    std::vector<std::vector<std::string>> candidates;
    for (const auto &w : words) 
    {
        for (const auto &a : (aaa(w, dict))) 
        {
          std::cout << a << " ";
        }
        std::cout << "\n";
    }
    
    return 0;
}
by

C++ Online Compiler

Write, Run & Share C++ code online using OneCompiler's C++ online compiler for free. It's one of the robust, feature-rich online compilers for C++ language, running on the latest version 17. Getting started with the OneCompiler's C++ compiler is simple and pretty fast. The editor shows sample boilerplate code when you choose language as C++ and start coding!

Read inputs from stdin

OneCompiler's C++ online compiler supports stdin and users can give inputs to programs using the STDIN textbox under the I/O tab. Following is a sample program which takes name as input and print your name with hello.

#include <iostream>
#include <string>
using namespace std;

int main() 
{
    string name;
    cout << "Enter name:";
    getline (cin, name);
    cout << "Hello " << name;
    return 0;
}

About C++

C++ is a widely used middle-level programming language.

  • Supports different platforms like Windows, various Linux flavours, MacOS etc
  • C++ supports OOPS concepts like Inheritance, Polymorphism, Encapsulation and Abstraction.
  • Case-sensitive
  • C++ is a compiler based language
  • C++ supports structured programming language
  • C++ provides alot of inbuilt functions and also supports dynamic memory allocation.
  • Like C, C++ also allows you to play with memory using Pointers.

Syntax help

Loops

1. If-Else:

When ever you want to perform a set of operations based on a condition If-Else is used.

if(conditional-expression) {
   //code
}
else {
   //code
}

You can also use if-else for nested Ifs and If-Else-If ladder when multiple conditions are to be performed on a single variable.

2. Switch:

Switch is an alternative to If-Else-If ladder.

switch(conditional-expression){    
case value1:    
 // code    
 break;  // optional  
case value2:    
 // code    
 break;  // optional  
......    
    
default:     
 code to be executed when all the above cases are not matched;    
}

3. For:

For loop is used to iterate a set of statements based on a condition.

for(Initialization; Condition; Increment/decrement){  
  //code  
}

4. While:

While is also used to iterate a set of statements based on a condition. Usually while is preferred when number of iterations are not known in advance.

while (condition) {  
// code 
}

5. Do-While:

Do-while is also used to iterate a set of statements based on a condition. It is mostly used when you need to execute the statements atleast once.

do {  
 // code 
} while (condition);

Functions

Function is a sub-routine which contains set of statements. Usually functions are written when multiple calls are required to same set of statements which increases re-usuability and modularity. Function gets run only when it is called.

How to declare a Function:

return_type function_name(parameters);

How to call a Function:

function_name (parameters)

How to define a Function:

return_type function_name(parameters) {  
 // code
}