#include <bits/stdc++.h>
using namespace std;
vector<string> split(string sentence){
    vector<string> words;
    string word;
    for(char i : sentence){
        if(i=='_'){
            words.push_back(word);
            cout<<"word:"<<word<<"\n";
            word.erase();
        }
        else{
            word+=i;
        }
    }
    words.push_back(word);
    return words;
}
struct trie{
    trie* letter[26];
    bool isEnd;
};
void init(trie* t){
    t->isEnd = 0;
    for(int i=0;i<26;i++){
        t->letter[i]=NULL;
    }
}
void insert(string word, trie* head){
    trie* current = head;
    for(char c : word){
        int ci = c-'a';
        if(current->letter[ci]) current = current->letter[ci];
        else{
            trie* newNode = new trie;
            for(int i=0; i<26;i++){
                newNode->letter[i] = NULL;
            }
            newNode->isEnd = 0;
            current->letter[ci] = newNode;
            current = current->letter[ci];
        }
    }
    current->isEnd = 1;
}

bool search(string word, trie* head){
    trie* current = head;
    for(char c:word){
        int ci = c-'a';
        if(!current->letter[ci]) return 0;
        current = current->letter[ci];
    }
    return current->isEnd;
}
vector<int> solve(string A, vector<string> &B) {
    vector<string> goodWords = split(A);
    trie* t = new trie;
    init(t);
    for(string word:goodWords){
        insert(word, t);
        cout<<word<<"\n";
    }
    vector<pair<int,int>> result_pair;
    for(int i=0;i<B.size();i++){
        vector<string> review_words = split(B[i]); 
        int count=0;
        for(string word:review_words){
            if(search(word, t)) count++;
        }
        result_pair.push_back(make_pair(count,i));
    }
    //sort(result_pair.rbegin(), result_pair.rend());
    //cout<<search("cool", t);
    vector<int> result;
    for(auto each_pair:result_pair){
        result.push_back(each_pair.first);
    }
    return result;
}

int main() 
{
  //cout<<"hello";
  trie* t = new trie;
  init(t);
  insert("pappu",t);
  insert("paalu",t);
  insert("patti",t);
  insert("pandi",t);
  //cout<<search("paalu",t);
  auto v= split("paalu_neellu_thene");
  for(string s:v) cout<<s<<"\n";
}

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
}