다음은 파티션을 추가하면 정수가 되도록 주어진 정수의 모든 고유 파티션을 가져오는 C++ 프로그램입니다. 이 프로그램에서 양의 정수 n이 주어지고 n을 양의 정수의 합으로 나타내는 가능한 모든 고유한 방법을 생성합니다.
알고리즘
Begin function displayAllUniqueParts(int m): Declare an array to store a partition p[m]. Set Index of last element k in a partition to 0 Initialize first partition as number itself, p[k]=m Create a while loop which first prints current partition, then generates next partition. The loop stops when the current partition has all 1s. Display current partition as displayArray(p, k + 1); Generate next partition: Initialize val=0. Find the rightmost non-one value in p[]. Also, update the val so that we know how much value can be accommodated. If k < 0, all the values are 1 so there are no more partitions Decrease the p[k] found above and adjust the val. If val is more, then the sorted order is violeted. Divide val in different values of size p[k] and copy these values at different positions after p[k]. Copy val to next position and increment position. End
예시 코드
#include<iostream> using namespace std; void printArr(int p[], int m) { for (int i = 0; i < m; i++) cout << p[i] << " "; cout << endl; } void printAllUniqueParts(int m) { int p[m]; int k = 0; p[k] = m; while (true) { printArr(p, k + 1); int rem_val = 0; while (k >= 0 && p[k] == 1) { rem_val += p[k]; k--; } if (k < 0) return; p[k]--; rem_val++; while (rem_val > p[k]) { p[k + 1] = p[k]; rem_val = rem_val - p[k]; k++; } p[k + 1] = rem_val; k++; } } int main() { cout << "All Unique Partitions of 3\n"; printAllUniqueParts(3); cout << "\nAll Unique Partitions of 4\n"; printAllUniqueParts(4); cout << "\nAll Unique Partitions of 5\n"; printAllUniqueParts(5); return 0; }
출력
All Unique Partitions of 3 3 2 1 1 1 1 All Unique Partitions of 4 4 3 1 2 2 2 1 1 1 1 1 1 All Unique Partitions of 5 5 4 1 3 2 3 1 1 2 2 1 2 1 1 1 1 1 1 1 1