SUBSET_SUM is a C library which seeks solutions of the subset sum problem.
The task is to compute a target value as the sum of a selected subset of a given set of weights.
SUBSET_SUM_NEXT works by backtracking, returning all possible solutions one at a time, keeping track of the selected weights using a 0/1 mask vector of size N.
SUBSET_SUM_TABLE works by a kind of dynamic programming approach, constructing a table of all possible sums from 1 to S. The storage required is N * S, so for large S this can be an issue.
SUBSET_SUM_FIND works by brute force, trying every possible subset to see if it sums to the desired value. It uses the bits of a 32 bit integer to keep track of the possibilities, and hence cannot work with more N = 31 weights.
I don't care what you do with this code.
SUBSET_SUM is available in a C version and a C++ version and a FORTRAN90 version and a MATLAB version and a Python version..
CHANGE_MAKING, a C library which considers the change making problem, in which a given sum is to be formed using coins of various denominations.
COMBINATION_LOCK, a C program which simulates the process of determining the secret combination of a lock.
COMBO, a C library which includes many combinatorial routines.
KNAPSACK_01, a C library which uses brute force to solve small versions of the 0/1 knapsack problem;
PARTITION_PROBLEM, a C library which seeks solutions of the partition problem, splitting a set of integers into two subsets with equal sum.
SATISFY, a C program which demonstrates, for a particular circuit, an exhaustive search for solutions of the circuit satisfiability problem.
SUBSET_SUM, a dataset directory which contains examples of the subset sum problem, in which a set of numbers is given, and is desired to find at least one subset that sums to a given target value.
TSP_BRUTE, a C program which reads a file of city-to-city distances and solves the traveling salesperson problem, using brute force.
You can go up one level to the C source codes.