void doOneBeta(const EngineType& engine,
std::vector<size_t>& ne,
OpLibFactoryType& opLibFactory,
size_t site,
size_t sigma,
RealType beta)
{
RealType sum = 0;
RealType sum2 = 0;
RealType denominator = 0;
FreeFermions::Combinations combinations(engine.size(),ne[0]);
size_t factorToMakeItSmaller = 1;
for (size_t i = 0; i<combinations.size(); ++i) {
OpDiagonalFactoryType opDiagonalFactory(engine);
EtoTheBetaHType ebh(beta,engine,0);
DiagonalOperatorType& eibOp = opDiagonalFactory(ebh);
std::vector<size_t> vTmp(engine.size(),0);
for (size_t j=0;j<combinations(i).size();++j) vTmp[combinations(i)[j]]=1;
std::vector<std::vector<size_t> > occupations(1,vTmp);
HilbertStateType thisState(engine,occupations);
HilbertStateType phi = thisState;
eibOp.applyTo(phi);
denominator += scalarProduct(thisState,phi)*factorToMakeItSmaller;
LibraryOperatorType& myOp2 = opLibFactory(LibraryOperatorType::N,site,sigma);
myOp2.applyTo(phi);
sum += scalarProduct(thisState,phi)*factorToMakeItSmaller;
myOp2.applyTo(phi);
sum2 += scalarProduct(thisState,phi)*factorToMakeItSmaller;
}
std::cout<<beta<<" "<<sum<<" "<<denominator<<" "<<sum/denominator<<" "<<sum2/denominator<<"\n";
}
int combinations (card_t *hand, int first, int last, int sumleft) {
if (first > last)
return (sumleft == 0);
else
return
combinations(hand,first+1,last,sumleft - hand[first].count) + /* include */
combinations(hand,first+1,last,sumleft); /* exclude */
}
/**
* @param candidates: A list of integers
* @param target: An integer
* @return: A list of lists of integers
*/
void combinations(vector<vector<int>> &ans, vector<int> ¤t,
vector<int> &candidates, int s, int e, int target)
{
if(target == 0)
{
ans.push_back(current);
return;
}
if(s == e || candidates[s] > target)
return;
current.push_back(candidates[s]);
combinations(ans, current, candidates, s, e, target - candidates[s]);
current.pop_back();
combinations(ans, current, candidates, s + 1, e, target);
}
Matrix<int> getCombinationMatrix(unsigned int n, unsigned int k){
std::vector<int> ints;
for (unsigned int i = 1; i <= n; ints.push_back(i++));
unsigned long chooseCount = choose(n,k);
Matrix<int> combinations(chooseCount, k);
int counter = 0;
do{
for (unsigned int i = 0; i < k; ++i)
combinations(counter,i) = ints[i];
counter++;
}while(next_combination(ints.begin(),ints.begin() + k,ints.end()));
return combinations;
}
void combinations( int numRemain, int r, int depth )
{
int i = 0 ;
int j = 0 ;
/* ensure that the number of selected does not exceed the bound and do not too small */
if( depth == 26 )
{
if( numSelect == r )
{
for( i = 0 ; i < 26 ; i++ )
{
for( j = 0 ; j < selected[ i ] ; j++ )
{
printf("%c",'a'+i) ;
}
}
printf("\n") ;
}
}
else
{
if( numSelect <= r && numSelect + numRemain >= r )
{
for( i = numOccur[ depth ] ; i >= 0 ; i-- )
{
numSelect += i ;
selected[ depth ] = i ;
combinations( numRemain-numOccur[ depth ], r, depth+1 ) ;
selected[ depth ] = 0 ;
numSelect -= i ;
}
}
}
}
int main(){
int num;
printf("Enter the number :");
scanf("%d",&num);
printf("the combinations are:\n");
combinations(num,0);
}
vector<vector<int>> combine(int n, int k) {
vector<vector<int>> res;
vector<int> local;
combinations(res,local,n,k,1);
return res;
}
long int findcombinations(int m, int j){
ans = 0; int i;
for(i = 1; i < MAX-1; i++)
aval[i] = 1;
combinations(j);
return ans;
}
vector<string> restoreIpAddresses(string s) {
vector<int> subset;
vector<vector<int>> dotPos;
vector<int> input;
vector<string> res;
if (s.size() > 12)
return res;
for (int i = 0; i < s.size(); i++) {
input.push_back(s[i] - '0');
}
combinations(input, 1, 0, subset, dotPos);
for (int i = 0; i < dotPos.size(); i++) {
string add;
add += s.substr(0, dotPos[i][0]);
add.push_back('.');
add += s.substr(dotPos[i][0], dotPos[i][1] - dotPos[i][0]);
add.push_back('.');
add += s.substr(dotPos[i][1], dotPos[i][2] - dotPos[i][1]);
add.push_back('.');
add += s.substr(dotPos[i][2], dotPos[i][3] - dotPos[i][1]);
res.push_back(add);
}
return res;
}
Iterator(Container& in_container, std::size_t sz)
: container_p{&in_container},
set_size{sz},
comb{
std::make_shared<CombinatorType>(combinations(in_container, sz))},
comb_iter{std::begin(*comb)},
comb_end{std::end(*comb)} {}
void combinations(vector<int>& nums, int depth, int startIdx, vector<int>& subset, vector<vector<int>>& res) {
if (depth > 4 && startIdx < nums.size())
return;
int nextNum = 0;
for (int i = startIdx; i < nums.size() && i < startIdx + 3; i++) {
nextNum += nums[i];
if (!nums[startIdx] && i > startIdx)
continue;
if (nextNum <= 255) {
subset.push_back(i + 1);
combinations(nums, depth + 1, i + 1, subset, res);
if (depth == 4 && i == nums.size() - 1) {
//printList(subset);
res.push_back(subset);
}
subset.pop_back();
}
else
continue;
nextNum *= 10;
}
}
int score_hand(card_t *hand) {
int score = 0;
int i,j,in_run,first_rank,rank,combos,runs,foo;
/* Score two points for each distinct combination of cards whose counts add up to 15 */
combos = combinations(hand,0,4,15);
if (debug) printf(" + %u for %u combinations summing to 15\n",2*combos,combos);
score += 2 * combos;
/* Score two points for each distinct pair of cards with the same rank */
for (i=0; i<5; i++)
for (j=i+1; j<5; j++)
if (hand[i].rank == hand[j].rank) {
score += 2;
if (debug)
printf(" + 2 for pair (%u,%c) (%u,%c)\n",
hand[i].rank, hand[i].suit,
hand[j].rank, hand[j].suit);
}
/* Score one point for each card in each distinct maximal run of three or more cards */
in_run = 0;
for (rank=0; rank<13; rank++) {
int foo;
foo = count_cards_with_rank(hand,rank);
if (foo)
runs *= foo;
if (!foo ^ !in_run) {
if (foo) {
first_rank = rank;
runs = foo;
in_run = 1;
} else {
if (rank - first_rank >= 3) {
if (debug)
printf(" + awarding %u points for %u runs of length %u\n",
(rank - first_rank)*runs, runs, rank - first_rank);
score += runs*(rank - first_rank);
}
in_run = 0;
}
}
}
/* Score one point if the hand contains the jack of the same suit as the starter */
for (i=0; i<4; i++)
if ((hand[i].rank == 11) && (hand[i].suit == hand[4].suit)) {
score += 1;
break;
}
return (score == 0 ? 19 : score);
}
int main(int argc, char **argv){
if(argc == 2){
int i, j = 0, num = 0;
int size = atoi(argv[1]);
int *array;
// Opening archives
FILE *archive = fopen("combinations.txt","w+");
FILE *quickout = fopen("quicksort.txt","w");
array = (int*) calloc(size,sizeof(int));
printf("Step 1. Generating all combinations on %d-size lists ...", size);
clock_t start = clock();
combinations(size, archive);
clock_t end = clock();
float seconds1 = (float)(end - start) / CLOCKS_PER_SEC;
printf("done! Time: %f s\n",seconds1);
rewind(archive);
// Read each row and put in array to sort
printf("Step 2. Running Quicksort on each combinations.txt row ...");
clock_t start2 = clock();
fscanf(archive,"%1d", &num);
while(!feof(archive)){
if(j < size){
array[j++] = num;
fscanf(archive,"%1d", &num);
}else{
quicksort(array,0,size-1);
for(i = 0; i < size; i++){
fprintf(quickout,"%d ", array[i]);
}
fprintf(quickout,"\n");
j=0;
}
}
quicksort(array,0,size-1);
for(i = 0; i < size; i++){
fprintf(quickout,"%d ", array[i]);
}
fprintf(quickout,"\n");
clock_t end2 = clock();
float seconds2 = (float)(end2 - start2) / CLOCKS_PER_SEC;
printf("done! Time: %f s\n",seconds2);
printf("Total execution time: %f s\n", seconds2+seconds1);
// Closing archives
fclose(archive);
fclose(quickout);
// Free memory
free(array);
}else{
printf("Please, execute: %s size\n", argv[0]);
}
return 0;
}
vector<vector<int>> combinationSum(vector<int> &candidates, int target) {
// write your code here
sort(candidates.begin(), candidates.end());
vector<vector<int>> ans;
vector<int> current;
combinations(ans, current, candidates, 0, candidates.size(), target);
return ans;
}
int main(int argc, char * argv[]) {
if(argc != 3) {
printf("Incorrect args: n k\n");
} else {
int n = atoi(argv[1]);
// int k = atoi(argv[2]);
for (int i = 1; i <= n; ++i) {
combinations(n,i);
}
}
}
Iterator& operator++() {
++this->comb_iter;
if (this->comb_iter == this->comb_end) {
++this->set_size;
this->comb = std::make_shared<CombinatorType>(
combinations(*this->container_p, this->set_size));
this->comb_iter = std::begin(*this->comb);
this->comb_end = std::end(*this->comb);
}
return *this;
}
void combinations(vector<string> &ret, string &digits, int index,
string &buf, vector<vector<char> > &mapping) {
if (index < 0) {
return;
}
if (index == digits.size()) {
ret.push_back(buf);
return;
}
int digit = digits[index] - '0';
vector<char> letters = mapping[digit];
if (letters.size() == 0) { // digit == 1
combinations(ret, digits, index + 1, buf, mapping);
} else {
for (int i = 0; i < letters.size(); i++) {
buf.push_back(letters[i]);
combinations(ret, digits, index + 1, buf, mapping);
buf.pop_back();
}
}
}
double numMovies(int groupSize) {
double result = 0;
if (groupSize >= 2) {
//calculate sumatory of combinations(n, k) from k=2 to k=N
int n = groupSize;
int sumCombinations=0;
for (int i=2; i <= groupSize; i++) {
int combs = combinations(groupSize,i);
result += combs;
}
}
return result; //yes, I like using Dijkstra's SESE (Single Entry, Single Exit style)
}
void
computeSums(const std::vector<unsigned long>& values, std::vector<unsigned long>& sums)
{
for (unsigned int p = 1; p <= values.size(); ++p)
{
comb_vector.clear();
combinations(values, p, sums);
}
}
void combinations(int j){
int i;
for(i = 1; i <= upper[j]; i++){
if(aval[i]){
aval[i] = 0;
if(j < MAX-1)
combinations(j+1);
else
ans++;
aval[i] = 1;
}
}
}
void combinations(int n,int i)
{
static int arr[arr_size];
if(n==0)
print_array(arr,i);
else if(n>0){
int k;
for(k=1;k<=max_point;k++){
arr[i]=k;
combinations(n-k,i+1);
}
}
}
vector<string> letterCombinations(string digits) {
vector<string> ret;
if (digits.size() == 0) {
return {""};
}
// build data
vector<vector<char> > phone_key = get_key_mapping();
string buf;
combinations(ret, digits, 0, buf, phone_key);
return ret;
}
bignum combinations(const bignum &bn1, const bignum &bn2)
{
if (bn1.getBase() != bn2.getBase())
return combinations(bn1, bn2.getConverted(bn1.getBase()));
bignum first = factorial(bn1);
bignum second = bn1 - bn2;
bignum third = factorial(second);
bignum fourth = factorial(bn2);
bignum fifth = third * fourth;
bignum temp = divideNumbers(first, fifth);
return temp;
}
void combinations(vector<vector<int>>&res,vector<int> &local,int n,int k,int start)
{
if(k==0)
{
res.push_back(local);
}
for(int i=start;i<=n;i++)
{
local.push_back(i);
combinations(res,local,n,k-1,i+1);
local.pop_back();
}
}
void combinations(const std::vector<unsigned long>& values, int p, std::vector<unsigned long>& sums)
{
int k = 1;
do
{
if (comb_vector.empty() || ( !comb_vector.empty() && k > comb_vector.back() ))
{
comb_vector.push_back(k);
if( comb_vector.size() == p )
print_comb(values, comb_vector, sums);
else
combinations(values, p, sums);
comb_vector.pop_back();
}
++k;
}
while( k < values.size() + 1);
}
int main(int argc, char* argv[])
{
double input;
char *p = malloc(sizeof(char));
double combin;
/* quick parameter check */
if(argc > 2 || argc <= 1)
{
printf("Program takes one argument, a decimal number\n");
exit(EXIT_FAILURE);
}
input = input_ok(argv[1]);
combin = combinations(input);
printf("Total Combinations: %.309g\n", combin);
}
vector< vector<T> > permutationsOfCombinations(vector<T> &v, unsigned int k) {
unsigned int next = 0;
vector< vector<T> > result, combs;
if(k > v.size())
throw k_GreaterThan_n_Exception();
else if(k == v.size())
return permutations(v);
else
combs = combinations(v, k);
for(unsigned int it = 0 ; it < combs.size() ; it++) {
sort(combs[it].begin(), combs[it].end());
do {
result.resize(result.size() + 1);
result[next] = combs[it];
next++;
} while(next_permutation(combs[it].begin(), combs[it].end()));
}
return result;
}
int main()
{
char str[ 40 ] = { 0 } ;
int r = 0 ;
int i = 0 ;
while( scanf("%s%d",str,&r) != EOF )
{
for( i = 0 ; i < 26 ; i++ )
{
numOccur[ i ] = 0 ;
}
for( i = 0 ; i < strlen(str) ; i++ )
{
numOccur[ str[ i ] - 'a' ] ++ ;
}
combinations( strlen(str), r, 0 ) ;
}
return 0 ;
}
int combinations(int n, int k) {
if(k==0) return 1;
if(k==n) return 1;
return combinations(n-1, k-1) + combinations(n-1, k);
}
int main(void)
{
int x, y;
char sign;
float numerator, denominator;
do {
printf("> ");
scanf("%c",&sign);
switch(sign) {
case '+':
scanf("%d%d",&x,&y);
printf("# %d\n",additional(x,y));
break;
case '-':
scanf("%d%d",&x,&y);
printf("# %d\n",subtraction(x,y));
break;
case '/':
scanf("%f%f",&numerator,&denominator);
printf("# %.2f\n",division(numerator,denominator));
break;
case 'd':
scanf("%d%d",&x,&y);
printf("# %d\n",divisionRemain(x,y));
break;
case 'm':
scanf("%d%d",&x,&y);
printf("# %d\n",modulo(x,y));
break;
case '*':
scanf("%d%d",&x,&y);
printf("# %d\n",multiply(x,y));
break;
case '^':
scanf("%d%d",&x,&y);
printf("# %ld\n",power(x,y));
break;
case '!':
scanf("%d",&x);
printf("# %lld\n",factorial(x));
break;
case 's':
scanf("%d",&x);
printf("# %d\n",sum(x));
break;
case 'a':
scanf("%d",&x);
printf("# %.2f\n",average(x));
break;
case 'c':
scanf("%d%d",&x,&y);
printf("# %lld\n",combinations(x,y));
break;
}
getchar();
}
while(sign != 'q');
return 0;
}