# C++ program for Solving Cryptarithmetic Puzzles

My Projects
My Profile
Logout
Undo
Redo
Cut
Copy
Paste
Delete
Select All
Find
Find and Replace
Editor Theme
Crimson
Eclipse
Github
Solarized
Cobalt
krTheme
Monokai
Terminal
Textmate
Twilight
Vibrant Ink
Font Size
8px
9px
10px
11px
12px
13px
14px
15px
16px
17px
18px
20px
22px
24px
Tab Size
1
2
3
4
5
6
7
8
Show Invisible
Hide Invisible
Show Line Numbers
Hide Line Numbers
Ace Editor (Default)
Vim Editor
Emacs Editor
Open New Project
Save Project
Save As New Project
Share Project
Search Project
#include <iostream> #include<vector> using namespace std; vector<int> use(10); //set 1, when one character is assigned previously struct node{ char letter; int value; }; int isValid(node* nodeList, const int count, string s1, string s2, string s3){ int val1 = 0, val2 = 0, val3 = 0, m = 1, j, i; for (i = s1.length() - 1; i >= 0; i--){ //find number for first string char ch = s1[i]; for (j = 0; j < count; j++) if (nodeList[j].letter == ch) //when ch is present, break the loop break; val1 += m * nodeList[j].value; m *= 10; } m = 1; for (i = s2.length() - 1; i >= 0; i--){ //find number for second string char ch = s2[i]; for (j = 0; j < count; j++) if (nodeList[j].letter == ch) break; val2 += m * nodeList[j].value; m *= 10; } m = 1; for (i = s3.length() - 1; i >= 0; i--){ //find number for third string char ch = s3[i]; for (j = 0; j < count; j++) if (nodeList[j].letter == ch) break; val3 += m * nodeList[j].value; m *= 10; } if (val3 == (val1 + val2)) //check whether the sum is same as 3rd string or not return 1; return 0; } bool permutation(int count, node* nodeList, int n, string s1, string s2, string s3){ if (n == count - 1){ //when values are assigned for all characters for (int i = 0; i < 10; i++){ if (use[i] == 0){ // for those numbers, which are not used nodeList[n].value = i; //assign value i if (isValid(nodeList, count, s1, s2, s3) == 1){ //check validation cout << "Solution found: "; for (int j = 0; j < count; j++) //print code, which are assigned cout << " " << nodeList[j].letter << " = " << nodeList[j].value; return true; } } } return false; } for (int i = 0; i < 10; i++){ if (use[i] == 0){ // for those numbers, which are not used nodeList[n].value = i; //assign value i and mark as not available for future use use[i] = 1; if (permutation(count, nodeList, n + 1, s1, s2, s3)) //go for next characters return true; use[i] = 0; //when backtracks, make available again } } return false; } bool solvePuzzle(string s1, string s2,string s3){ int uniqueChar = 0; //Number of unique characters int len1 = s1.length(); int len2 = s2.length(); int len3 = s3.length(); vector<int> freq(26); //There are 26 different characters for (int i = 0; i < len1; i++) ++freq[s1[i] - 'A']; for (int i = 0; i < len2; i++) ++freq[s2[i] - 'A']; for (int i = 0; i < len3; i++) ++freq[s3[i] - 'A']; for (int i = 0; i < 26; i++) if (freq[i] > 0) //whose frequency is > 0, they are present uniqueChar++; if (uniqueChar > 10){ //as there are 10 digits in decimal system cout << "Invalid strings"; return 0; } node nodeList[uniqueChar]; for (int i = 0, j = 0; i < 26; i++){ //assign all characters found in three strings if (freq[i] > 0){ nodeList[j].letter = char(i + 'A'); j++; } } return permutation(uniqueChar, nodeList, 0, s1, s2, s3); } int main(){ string s1 = "BASE"; string s2 = "BALL"; string s3 = "GAMES"; if (solvePuzzle(s1, s2, s3) == false) cout << "No solution"; }

# C++ program for Solving Cryptarithmetic Puzzles (GNU GCC v7.1.1)

C++ program for Solving Cryptarithmetic Puzzles (GNU GCC v7.1.1) helps you to Edit, Run and Share your C++ Code directly from your browser. This development environment provides you version GNU GCC v7.1.1.

## How to give program Input?

The latest version of Coding Ground allows to provide program input at run time from the termnial window exactly the same way as you run your program at your own computer. So simply run a program and provide your program input (if any) from the terminal window available in the right side.

## Keyboard Shortcuts

ShortcutDescription
⌘ + EnterRun the program
⌘ + SSave Project (Login Required)
⇧ + ⌘ + SSave As Project
⌘ + PNew Project
⌘ + GShare Project
⌘ + ZUndo Editing
⌘ + YRedo Editing
⌘ + ASelect All Text
⌘ + XCut Selected Text
⌘ + CCopy Selected Text
⌘ + VPaste Copied Text
⌘ + FSearch Text
⌘ + ⌥ + FReplace Text
ShortcutDescription
Ctrl + EnterRun the program
Ctrl + SSave Project
Shift + Ctrl + SSave As Project
Ctrl + GShare Project
Ctrl + ZUndo Editing
Ctrl + YRedo Editing
Ctrl + ASelect All Text
Ctrl + XCut Selected Text
Ctrl + CCopy Selected Text
Ctrl + VPaste Copied Text
Ctrl + FSearch Text
Ctrl + HReplace Text

## Save C++ Project

You can save your C++ Project with us so that you can access this project later on. To save a project you will need to create a login Id with us. So before you save a project, please create a login Id using a link given at the top right corner of this page.

## Share C++ Project

You can use this feature to share your C++ Code with your teachers, classmates and colleagues. Just click Share Button and it will create a short link, which can be shared through Email, WhatsApp or even through Social Media. A shared link will be deleted if it has been passive for almost 3 months.