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 changeddef 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 functionsif __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 functionconst str = "she is going to watch movie with her boyfriend";console.log(changeGender(str)); |
Output
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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