Change gender of string i.e toggle all the gender-specific words in the input string.
Examples:
Input: “she is my sister” Output: “he is my brother”. There are two gender-specific words in this sentence:“she” and “sister”. After toggling gender specific words to their respective counterparts - “he” and “brother” : Gender specific words of the string are now changed.
Algorithm:
- Maintain a hash-map which maps all the “female” words to the “male” words and all the “male” words to “female” ones.
- Then for each word in the string, we check whether this is a gender-specific word or not. If it is then we swap this word with its counterpart word. Else we don’t swap this word.
- All the words gets concatenated in a new string, which at the end is printed and is our required string.
CPP
// A C++ Program to change the gender of a string #include<bits/stdc++.h> using namespace std; // A Function that returns the new string with gender // changed string changeGender(string str) { // A Dictionary to store the mapping of genders // The user can add his words too. unordered_multimap <string, string> dictionary = { { "batman" , "batwoman" }, { "batwoman" , "batman" }, { "boy" , "girl" }, { "girl" , "boy" }, { "boyfriend" , "girlfriend" }, { "girlfriend" , "boyfriend" }, { "father" , "mother" }, { "mother" , "father" }, { "husband" , "wife" }, { "wife" , "husband" }, { "he" , "she" }, { "she" , "he" }, { "his" , "her" }, { "her" , "his" }, { "male" , "female" }, { "female" , "male" }, { "man" , "woman" }, { "woman" , "man" }, { "Mr" , "Ms" }, { "Mr" , "Ms" }, { "sir" , "madam" }, { "madam" , "sir" }, { "son" , "daughter" }, { "daughter" , "son" }, { "uncle" , "aunt" }, { "aunt" , "uncle" }, }; str = str + ' ' ; // Append a space at the end int n = str.length(); // 'temp' string will hold the intermediate words // and 'ans' string will be our result string temp = "" , ans = "" ; for ( int i=0; i<=n-1; i++) { if (str[i] != ' ' ) temp.push_back(str[i]); else { // If this is a 'male' or a 'female' word then // swap this with its counterpart if (dictionary.find(temp) != dictionary.end()) temp = dictionary.find(temp)->second; ans = ans + temp + ' ' ; temp.clear(); } } return (ans); } // Driver Program to test above functions int main() { string str = "she is going to watch movie with" " her boyfriend" ; cout << changeGender(str); return (0); } |
Java
import java.util.HashMap; import java.util.Map; public class ChangeGender { // A Function that returns the new string with gender changed public static String changeGender(String str) { // A Map to store the mapping of genders // The user can add his words too. Map<String, String> dictionary = new HashMap<>(); dictionary.put( "batman" , "batwoman" ); dictionary.put( "batwoman" , "batman" ); dictionary.put( "boy" , "girl" ); dictionary.put( "girl" , "boy" ); dictionary.put( "boyfriend" , "girlfriend" ); dictionary.put( "girlfriend" , "boyfriend" ); dictionary.put( "father" , "mother" ); dictionary.put( "mother" , "father" ); dictionary.put( "husband" , "wife" ); dictionary.put( "wife" , "husband" ); dictionary.put( "he" , "she" ); dictionary.put( "she" , "he" ); dictionary.put( "his" , "her" ); dictionary.put( "her" , "his" ); dictionary.put( "male" , "female" ); dictionary.put( "female" , "male" ); dictionary.put( "man" , "woman" ); dictionary.put( "woman" , "man" ); dictionary.put( "Mr" , "Ms" ); dictionary.put( "Ms" , "Mr" ); dictionary.put( "sir" , "madam" ); dictionary.put( "madam" , "sir" ); dictionary.put( "son" , "daughter" ); dictionary.put( "daughter" , "son" ); dictionary.put( "uncle" , "aunt" ); dictionary.put( "aunt" , "uncle" ); str = str + " " ; // Append a space at the end int n = str.length(); // 'temp' string will hold the intermediate words // and 'ans' string will be our result String temp = "" , ans = "" ; for ( int i = 0 ; i <= n - 1 ; i++) { if (str.charAt(i) != ' ' ) temp += str.charAt(i); else { // If this is a 'male' or a 'female' word then // swap this with its counterpart if (dictionary.containsKey(temp)) temp = dictionary.get(temp); ans = ans + temp + " " ; temp = "" ; } } return ans; } // Driver Program to test above functions public static void main(String[] args) { String str = "she is going to watch movie with her boyfriend" ; System.out.println(changeGender(str)); } } |
Python
# A Python program to change the gender of a string # A Function that returns the new string with gender changed def change_gender(string): # A Dictionary to store the mapping of genders # The user can add his words too. dictionary = { "batman" : "batwoman" , "batwoman" : "batman" , "boy" : "girl" , "girl" : "boy" , "boyfriend" : "girlfriend" , "girlfriend" : "boyfriend" , "father" : "mother" , "mother" : "father" , "husband" : "wife" , "wife" : "husband" , "he" : "she" , "she" : "he" , "his" : "her" , "her" : "his" , "male" : "female" , "female" : "male" , "man" : "woman" , "woman" : "man" , "Mr" : "Ms" , "Ms" : "Mr" , "sir" : "madam" , "madam" : "sir" , "son" : "daughter" , "daughter" : "son" , "uncle" : "aunt" , "aunt" : "uncle" , } string + = ' ' # Append a space at the end n = len (string) # 'temp' string will hold the intermediate words # and 'ans' string will be our result temp = "" ans = "" for i in range (n): if string[i] ! = ' ' : temp + = string[i] else : # If this is a 'male' or a 'female' word then # swap this with its counterpart if temp in dictionary: temp = dictionary[temp] ans + = temp + ' ' temp = "" return ans # Driver Program to test above functions if __name__ = = "__main__" : string = "she is going to watch movie with her boyfriend" print (change_gender(string)) |
C#
using System; using System.Collections.Generic; class Program { static string ChangeGender( string str) { // A Dictionary to store the mapping of genders // The user can add his words too. Dictionary< string , string > dictionary = new Dictionary< string , string > { { "batman" , "batwoman" }, { "batwoman" , "batman" }, { "boy" , "girl" }, { "girl" , "boy" }, { "boyfriend" , "girlfriend" }, { "girlfriend" , "boyfriend" }, { "father" , "mother" }, { "mother" , "father" }, { "husband" , "wife" }, { "wife" , "husband" }, { "he" , "she" }, { "she" , "he" }, { "his" , "her" }, { "her" , "his" }, { "male" , "female" }, { "female" , "male" }, { "man" , "woman" }, { "woman" , "man" }, { "Mr" , "Ms" }, { "Ms" , "Mr" }, { "sir" , "madam" }, { "madam" , "sir" }, { "son" , "daughter" }, { "daughter" , "son" }, { "uncle" , "aunt" }, { "aunt" , "uncle" } }; str += ' ' ; // Append a space at the end int n = str.Length; // 'temp' string will hold the intermediate words // and 'ans' string will be our result string temp = "" , ans = "" ; for ( int i = 0; i <= n - 1; i++) { if (str[i] != ' ' ) { temp += str[i]; } else { // If this is a 'male' or a 'female' word then // swap this with its counterpart if (dictionary.ContainsKey(temp)) { temp = dictionary[temp]; } ans += temp + ' ' ; temp = "" ; } } return ans; } static void Main( string [] args) { string str = "she is going to watch movie with her boyfriend" ; Console.WriteLine(ChangeGender(str)); Console.ReadKey(); } } |
Javascript
// A Function that returns the new string with gender // changed function changeGender(str) { // A Dictionary to store the mapping of genders // The user can add his words too. const dictionary = new Map([ [ "batman" , "batwoman" ], [ "batwoman" , "batman" ], [ "boy" , "girl" ], [ "girl" , "boy" ], [ "boyfriend" , "girlfriend" ], [ "girlfriend" , "boyfriend" ], [ "father" , "mother" ], [ "mother" , "father" ], [ "husband" , "wife" ], [ "wife" , "husband" ], [ "he" , "she" ], [ "she" , "he" ], [ "his" , "her" ], [ "her" , "his" ], [ "male" , "female" ], [ "female" , "male" ], [ "man" , "woman" ], [ "woman" , "man" ], [ "Mr" , "Ms" ], [ "Ms" , "Mr" ], [ "sir" , "madam" ], [ "madam" , "sir" ], [ "son" , "daughter" ], [ "daughter" , "son" ], [ "uncle" , "aunt" ], [ "aunt" , "uncle" ], ]); str = str + ' ' ; // Append a space at the end const n = str.length; // 'temp' string will hold the intermediate words // and 'ans' string will be our result let temp = "" , ans = "" ; for (let i = 0; i <= n - 1; i++) { if (str[i] != ' ' ) temp += str[i]; else { // If this is a 'male' or a 'female' word then // swap this with its counterpart if (dictionary.has(temp)) temp = dictionary.get(temp); ans = ans + temp + ' ' ; temp = "" ; } } return (ans); } // Driver Program to test above function const str = "she is going to watch movie with her boyfriend" ; console.log(changeGender(str)); |
he is going to watch movie with his girlfriend
Time Complexity: O(N^2), where N is the length of the string, as the ‘+’/ ‘append’ operator of the string can take upto O(N) time and assuming that lookup in the dictionary takes O(1) worse case time.
Auxiliary Space: Apart from the dictionary that maps all the words to its counterpart, we declare O(N) space for the new string, where N is the length of input string.
Scope for Improvement:
- We can add more words and their counterparts in the dictionary to increase the accuracy of the program. For example, we can add – “actor , actress” , “god , goddess” to our dictionary.
- A text file of words of all female and male words can also be imported.
- The program can be modified to become case insensitive.
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