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C++ program to set all permutations of string. In this program bug is there and request you to fix the bug.

C++ program to set all permutations of string. In this program bug is there and request you to fix the bug.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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C++ program to set all permutations of string. In this program bug is there and request you to fix the bug. thank you

set<string>variation (string z) {

set<string> response;

if (z.length()==0) {

return response ;

{

for (int i = 0; i<z.length(); i++)

{

string pause = z.subtr(0,i) + z.subtr(i+1);

set<string>suffixes = variation(pause);

for (string x : suffixes) {

response.insert(z[i] + x);

}

}

return response;

}

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