Lexicographical order denotes the way the words are ordered in a list, based on alphabetical order according to their alphabets. For example −
List of words: Harry Adam Sam Lexicographical order of words: Adam Harry Sam
A program to sort elements in lexicographical order is as follows −
Example
#include <iostream>
using namespace std;
int main() {
int i,j;
string s[5], temp;
cout<<"Enter the elements..."<<endl;
for(i = 0; i < 5; ++i)
getline(cin, s[i]);
for(i = 0; i < 4; ++i)
for(j = i+1; j < 5; ++j) {
if(s[i] > s[j]) {
temp = s[i];
s[i] = s[j];
s[j] = temp;
}
}
cout << "The elements in lexicographical order are... " << endl;
for(int i = 0; i < 5; ++i)
cout << s[i] << endl;
return 0;
}Output
The output of the above program is as follows −
Enter the elements… Orange Grapes Mango Apple Guava The elements in lexicographical order are... Apple Grapes Guava Mango Orange
In the above program, string s[] is defined and the elements are entered by the user. This is given below −
string s[5], temp; cout<<"Enter the elements..."<<endl; for(i = 0; i < 5; ++i) getline(cin, s[i]);
The elements are arranged alphabetically by using nested for loops. The code snippet for this is as follows −
for(i = 0; i < 4; ++i)
for(j = i+1; j < 5; ++j) {
if(s[i] > s[j]) {
temp = s[i];
s[i] = s[j];
s[j] = temp;
}
}Finally all the elements in lexicographical order are displayed. This is given below −
cout << "The elements in lexicographical order are... " << endl; for(int i = 0; i < 5; ++i) cout << s[i] << endl;