Given a positive integer N, the task is to generate N random hexadecimal integers.
Examples:
Input: N = 3
Output:
F9AD0D9
E19B24CD01
A5E
Approach: The given problem can be solved with the help of the rand() function which is used to generate random integers. A character array can be created which stores all the possible characters in the hexadecimal notation and randomly select the characters from the array.
Below is the implementation of the above approach:
C++
// C++ program for the above approach #include <bits/stdc++.h> using namespace std; // Maximum length of the random integer const int maxSize = 10; // Function to generate N Hexadecimal // integers void randomHexInt(int N) { srand(time(0)); // Stores all the possible characters // in the Hexadecimal notation char hexChar[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; // Loop to print N integers for (int i = 0; i < N; i++) { // Randomly select length of the // int in the range [1, maxSize] int len = rand() % maxSize + 1; // Print len characters for (int j = 0; j < len; j++) { // Print a randomly selected // character cout << hexChar[rand() % 16]; } cout << '\n'; } } // Driver Code int main() { int N = 3; randomHexInt(N); return 0; } |
Java
// Java program for the above approach class GFG{ // Maximum length of the random integer static int maxSize = 10; // Function to generate N Hexadecimal // integers static void randomHexInt(int N) { // Stores all the possible characters // in the Hexadecimal notation char hexChar[] = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; // Loop to print N integers for (int i = 0; i < N; i++) { // Randomly select length of the // int in the range [1, maxSize] int len = (1 + (int)(Math.random() * 100)) % maxSize + 1; // Print len characters for (int j = 0; j < len; j++) { // Print a randomly selected // character System.out.print(hexChar[(1 + (int)(Math.random() * 100)) % 16]); } System.out.println(); } } // Driver Code public static void main (String[] args) { int N = 3; randomHexInt(N); } } // This code is contributed by sanjoy_62. |
Python3
# Python3 program for the above approach import random,math # Maximum length of the random integer maxSize = 10; # Function to generate N Hexadecimal # integers def randomHexInt(N) : # Stores all the possible characters # in the Hexadecimal notation hexChar = [ '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F']; # Loop to print N integers for i in range(N) : # Randomly select length of the # int in the range [1, maxSize] Len = math.floor(random.random() * (maxSize - 1) + 1) # Print len characters for j in range(Len) : # Print a randomly selected # character print(hexChar[(math.floor(random.random() * 16))],end = ""); print(); # Driver Code if __name__ == "__main__" : N = 3; randomHexInt(N); # This code is contributed by AnkThon |
C#
// C# program for the above approach using System; using System.Collections.Generic; using System.Linq; public class GFG { // Maximum length of the random integer static int maxSize = 10; // Function to generate N Hexadecimal // integers static void randomHexInt(int N) { // Stores all the possible characters // in the Hexadecimal notation char[] hexChar = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' }; // For random generator Random rand = new Random(); // Loop to print N integers for (int i = 0; i < N; i++) { // Randomly select length of the // int in the range [1, maxSize] int len = rand.Next() % maxSize + 1; // Print len characters for (int j = 0; j < len; j++) { // Print a randomly selected // character Console.Write(hexChar[rand.Next() % 16]); } Console.WriteLine(); } } // Driver Code public static void Main (string[] args) { int N = 3; randomHexInt(N); } } // This code is contributed by code_hunt. |
Javascript
<script> // JavaScript Program to implement // the above approach // Maximum length of the random integer const maxSize = 10; // Function to generate N Hexadecimal // integers function randomHexInt(N) { // Stores all the possible characters // in the Hexadecimal notation let hexChar = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F']; // Loop to print N integers for (let i = 0; i < N; i++) { // Randomly select length of the // int in the range [1, maxSize] let len = Math.random() * (maxSize - 1) + 1; // Print len characters for (let j = 0; j < len; j++) { // Print a randomly selected // character document.write(hexChar[(Math.floor(Math.random() * (16)))]); } document.write("<br>") } } // Driver Code let N = 3; randomHexInt(N); // This code is contributed by Potta Lokesh </script> |
Output:
B71C3 EC3BBC90 82410C0D
Time Complexity: O(N*M) where M represents the maximum length of the random string.
Auxiliary Space: O(1)
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