Next_permutation for All Arrangements
C++
Hard
2 views
Problem Description
Generate next lexicographic permutation.
Real Life: Finding all possible arrangements.
Step-by-Step Logic:
1. Sort array first
2. Use next_permutation() repeatedly
3. Generates next arrangement each time
4. Returns false when all done
5. Gets all permutations
Official Solution
void stl_q15_next_permutation() {
vector<int> numbers = {1, 2, 3};
cout << "All permutations:" << endl;
do {
for(int num : numbers) {
cout << num << " ";
}
cout << endl;
} while(next_permutation(numbers.begin(), numbers.end()));
}
int main() {
cout << "=== C++ PRACTICE QUESTIONS ===" << endl;
cout << "All topics covered with detailed explanations!" << endl;
return 0;
}
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