Iterating in map/unordered map c++

// CPP program to traverse a unordered_map using
// range based for loop
#include <bits/stdc++.h>
using namespace std;
 
int main()
{
    int arr[] = { 1, 1, 2, 1, 1, 3, 4, 3 };
    int n = sizeof(arr) / sizeof(arr[0]);
 
    unordered_map<int, int> m;
    for (int i = 0; i < n; i++)
        m[arr[i]]++;
 
    cout << "Element Frequency" << endl;
    for (auto i : m)
        cout << i.first << "    " << i.second
             << endl;
             
   //OR using begin() and end()
   
   for (auto i = m.begin(); i != m.end(); i++)
        cout << i->first << "      " << i->second
             << endl;
 
    return 0;
}

Source: geeksforgeeks.org

Similar codes

0 vote226 views1 answer
C++ synchronization primitives example programs
C++
0 vote223 views1 answer
Initialize a vector with another vector c++ complexity
C++
36 votes213 views2 answers
Range of long long in c++
C++
0 vote224 views1 answer
C++ require keyword
C++
3 votes215 views1 answer
Convert refference to pointer c++
C++
-1 vote191 views3 answers
Program to check smallest num in three numbers in c++
C++
0 vote253 views1 answer
Cmake g++ address sanitizer
C++
0 vote251 views1 answer
C++ switch integer
C++
0 vote224 views1 answer
Scan line in c++
C++
-1 vote248 views4 answers
Time complexity analysis of algorithms calculator
C++