A password is said to be strong if it satisfies the following criteria:
- It contains at least one lowercase English character.
- It contains at least one uppercase English character.
- It contains at least one special character. The special characters are: !@#$%^&*()-+
- Its length is at least 8.
- It contains at least one digit.
Given a string, find its strength. Let a strong password is one that satisfies all above conditions. A moderate password is one that satisfies first three conditions and has length at least 6. Otherwise password is week.
Examples :
Input : "GeeksforGeeks!@12" Output : Strong Input : "gfg!@12" Output : Moderate
C++
// C++ program to check if a given password is // strong or not. #include <bits/stdc++.h> using namespace std; void printStrongNess(string& input) { int n = input.length(); // Checking lower alphabet in string bool hasLower = false, hasUpper = false; bool hasDigit = false, specialChar = false; string normalChars = "abcdefghijklmnopqrstu" "vwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890 "; for (int i = 0; i < n; i++) { if (islower(input[i])) hasLower = true; if (isupper(input[i])) hasUpper = true; if (isdigit(input[i])) hasDigit = true; size_t special = input.find_first_not_of(normalChars); if (special != string::npos) specialChar = true; } // Strength of password cout << "Strength of password:-"; if (hasLower && hasUpper && hasDigit && specialChar && (n >= 8)) cout << "Strong" << endl; else if ((hasLower || hasUpper) && specialChar && (n >= 6)) cout << "Moderate" << endl; else cout << "Weak" << endl; } // Driver code int main() { string input = "GeeksforGeeks!@12"; printStrongNess(input); return 0; } |
Python3
# Python3 program to check if a given # password is strong or not. def printStrongNess(input_string): n = len(input_string) # Checking lower alphabet in string hasLower = False hasUpper = False hasDigit = False specialChar = False normalChars = "abcdefghijklmnopqrstu" "vwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890 " for i in range(n): if input_string[i].islower(): hasLower = True if input_string[i].isupper(): hasUpper = True if input_string[i].isdigit(): hasDigit = True if input_string[i] not in normalChars: specialChar = True # Strength of password print("Strength of password:-", end = "") if (hasLower and hasUpper and hasDigit and specialChar and n >= 8): print("Strong") elif ((hasLower or hasUpper) and specialChar and n >= 6): print("Moderate") else: print("Weak") # Driver code if __name__=="__main__": input_string = "GeeksforGeeks!@12" printStrongNess(input_string) # This code is contributed by Yash_R |
Output:
Strength of password:-Strong
This article is contributed by Apurva Agarwal. If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.
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