o// Author: John Maslanka
// Revised: Chad David Cover
// Date: January 21, 2016
// Version: 1
#include "stdafx.h"
void MergeSort::mergesort(int data[], int n)
{
int n1, n2;
if (n > 1)
{
n1 = n / 2;
n2 = n - n1;
mergesort(data, n1);
mergesort((data + n1), n2);
merge(data, n1, n2);
}
}
void mergesort(int low, int high){
if(low == high){
return;
}else if(high == low+1){
if(a[high] < a[low]){
swap(low,high);
}
return;
}
int mid = (low+high)/2;
mergesort(low,mid);
mergesort(mid+1,high);
int itr;
int i = low;
int j = mid+1;
int k = 0;
while( i<=mid && j<=high){
if(a[i]<a[j]){
b[k] = a[i];
k++;
i++;
}else{
b[k] = a[j];
j++;
k++;
}
}
while( i <= mid){
b[k] = a[i];
k++;
i++;
}
while( j <= high){
b[k] = a[j];
k++;
j++;
}
for(itr = 0; itr < k; itr++){
a[low+itr] = b[itr];
}
}
void splitmerge(int *a,int start,int end,int size)
{
int mid,i;
if(start == end)
return;
mid = (start + end)/2;
splitmerge(a,start,mid,size);
splitmerge(a,mid+1,end,size);
mergesort(a,start,mid,end,size);
}
int main()
{
int a[max];
int n;
n=read(a);
printf("sorted array\n");
mergesort(a,0,n-1);
display(a,n);
return 0;
}
static void mergesort (char *p,
char *r,
size_t elemSize,
int (*comparator)(const void*, const void*)) {
int numElems;
char *q;
if ((r-p) < (2*elemSize)) return;
numElems = (r-p)/elemSize;
numElems /= 2;
q = p + numElems*elemSize;
mergesort(p, q, elemSize, comparator);
mergesort(q, r, elemSize, comparator);
merge(p, q, r, elemSize, comparator);
}
/* Autor: Philipp Lasser
* Datum: 21.01.2009
* Version: 1.1
* Programmbeschreibung: Dies ist ein Programm das 10 eingegebenen
* Zahlen, aufsteigend sortiert wieder ausgiebt.
*/
void mergesort(int a[], int low, int high) { //Funktion mergesort
int i = 0;
int elemente = high - low + 1; //Anzahl der Elemente
int hilfsarray = 0;
int FeldL = 0;
int FeldR = 0;
int arbeitsarray[elemente];
if(low == high) //wenn nichts zu sortieren ist
return;
hilfsarray = (low + high) / 2;
mergesort(a, low, hilfsarray); //Rekursion
mergesort(a, hilfsarray + 1, high);
for(i = 0; i < elemente; i++)
arbeitsarray[i] = a[low + i]; //schreiben ins Arbeitsarray
FeldL = 0;
FeldR = hilfsarray - low + 1;
for(i = 0; i < elemente; i++) {
if(FeldR <= high - low) //Vergleichen der
if(FeldL <= hilfsarray - low)
if(arbeitsarray[FeldL] > arbeitsarray[FeldR]){ //Die Teilfelder wieder vereinigen
a[i + low] = arbeitsarray[FeldR++];
}
else {
a[i + low] = arbeitsarray[FeldL++];
}
else {
a[i + low] = arbeitsarray[FeldR++];
}
else {
a[i + low] = arbeitsarray[FeldL++];
}
}
}
void merge(int a[],int first,int last)
{
if(first<last)
{
int mid=(first+last)/2;
merge(a,first,mid);
merge(a,mid+1,last);
mergesort(a,first,mid,last);
}
}
void part(int arr[],int low,int high) {
int mid;
if(low<high) {
mid=(low+high)/2;
part(arr,low,mid);
part(arr,mid+1,high);
mergesort(arr,low,mid,high);
}
}
int* mergesort( int* data, int length ) {
int middle = length / 2;
if( length > 1 ) {
// rekursives Aufrufen - vom ersten Element bis zur Mitte
// linkes Teilfeld
mergesort(&data[0], middle);
// rekursives Aufrufen - vom mittleren Element bis zum letzten
// rechtes Teilfeld
mergesort(&data[middle], length - middle);
}
// Feld ist bereits sortiert, wenn es nur ein Element hat
if( length == 1 )
return data;
int tmp[N];
int a = 0; // Index des temporären Feldes
int b = 0; // Index des linken Feldes
int c = middle; // Index des rechten Feldes
// solange im linken und im rechten Teilfeld noch Elemente sind
while(b < middle and c < length){
if( data[b] < data[c] )
tmp[a++] = data[b++]; // linkes Element kleiner
else
tmp[a++] = data[c++]; // rechtes Element kleiner
}
// Rest des linken Teilfeldes noch übertragen
while( b < middle )
tmp[a++] = data[b++];
// Rest des rechten Teilfeldes noch übertragen
while( c < length )
tmp[a++] = data[c++];
// sortierte Elemente zurückkopieren
for( int i = 0; i < length; i++ )
data[i] = tmp[i];
return data;
};
/**
* linkedlist* mergesort(linkedlist *head,int (*comp)(linkedlist*,linkedlist*))
*
* Merge sort function for linked lists
*
* @list1: Pointer to linked list head.
*
* @comp: This function allows for custom comparison
* functions to be used that take in linked lists
* and return <1 if node 1 is less than head two
* and return >1 if node 2 is greater than head two
*
* @return: Returns the new top node of sorted linked list
*/
linkedlist* mergesort(linkedlist *head,int (*comp)(linkedlist*,linkedlist*))
{
linkedlist *head_one;
linkedlist *head_two;
if((head == NULL)||(head->nextelm == NULL))
return head;
head_one = head;
head_two = head->nextelm;
while((head_two != NULL) && (head_two->nextelm != NULL))
{
head = head->nextelm;
head_two = head->nextelm->nextelm;
}
head_two = head->nextelm;
head->nextelm = NULL;
return merge(mergesort(head_one,(comp)), mergesort(head_two,(comp)),(comp));
}
typename List<T>::ListNode * List<T>::mergesort(ListNode * start, int chainLength)
{
/// @todo Graded in MP3.2
int half = chainLength/2;
if(start==NULL || start->next == NULL)
return start;
ListNode * second = split(start,half);
start = mergesort(start,half);
if(chainLength%2==0)
second = mergesort(second,half);
else
second = mergesort(second,chainLength-half);
return merge(start,second); // change me!
}
int main()
{
while(1)
{ int nattackers,ndefenders;
scanf("%d %d",&nattackers,&ndefenders);
if(nattackers==0&&ndefenders==0)
break;
int a[15],b[15],i;
for(i=0;i<nattackers;++i)
{
if(i==nattackers-1)
scanf("%d",&a[i]);
else
scanf("%d ",&a[i]);
}
for(i=0;i<ndefenders;++i)
{
if(i==ndefenders-1)
scanf("%d",&b[i]);
else
scanf("%d ",&b[i]);
}
mergesort(a,nattackers);
mergesort(b,ndefenders);
int count=0,flag=0;
for(i=0;i<ndefenders;++i)
{
if(b[i]<=a[0])
++count;
if(count>=2)
{
++flag;
break;
}
}
if(flag)
printf("N\n");
else
printf("Y\n");
}
return 0;
}
void mergesort(int l,int r)
{
int i,j,k,m;
int *b;
b=(int *)malloc(sizeof(int)*r);
if(r > l)
{
m=(r+l)/2;
mergesort(l,m);
mergesort(m+1,r);
for(i=m+1;i>l;i--)
b[i-1]=V[i-1];
for(j=m;j<r;j++)
b[r+m-j]=V[j+1];
for(k=l;k<=r;k++)
V[k]=(b[i]<b[j]) ? b[i++] : b[j--];
}
}
void mergesort(int *a, int n, int low, int high, int *ans){
int mid;
int *temp;
temp = (int*)malloc(sizeof(int)*n);
if(low==high){
*(ans+low) = *(a+low);
return;
}
mid = (low+high)/2;
//sort a[low...mid]
mergesort(a, n, low, mid, temp);
//sort a[mid+1, high]
mergesort(a, n, mid+1, high, temp);
//merge temp[low...mid] temp[mid+1, high] into ans[low...high]
merge(temp, ans, low, mid, high);
free(temp);
}
int main()
{
int i,j,n=6;
int a[]={6,5,4,3,2,1};
mergesort(a,0,5);
for(i=0;i<n;i++)
printf("%d ",a[i]);
}
void *
mergesort(void *v, int n, int size, int (*compare)(const void *, const void *)) {
if (n < 2) {
return;
}
int half = n/2;
int comp_result;
char *base = (char *) v;
char *left_base, *right_base;
left_base = (char *) mergesort((void *) base, half, size, compare);
right_base = (char *) mergesort((void *) &base[half * size], n - half, size, compare);
char *sorted = (char *) malloc(n * size);
int i, p = 0, q = 0;
for (i = 0; i < n; ++i) {
if (p == half) {
// sorted[i] = second_half[q++];
memcpy(sorted + i*size, right_base + q*size, size);
++q;
} else if (q == n - half) {
// sorted[i] = first_half[p++];
memcpy(sorted + i*size, left_base + p*size, size);
++p;
} else {
comp_result = (*compare)((const void *) &left_base[p*size], (const void *) &right_base[q*size]);
if (comp_result <= 0) {
// sorted[i] = first_half[p++];
memcpy(sorted + i*size, left_base + p*size, size);
++p;
} else {
// sorted[i] = second_half[q++];
memcpy(sorted + i*size, right_base + q*size, size);
++q;
}
}
}
return (void *) sorted;
}
int main() {
int array[10] = { 123, 542, 12, 76, 32, 211, 356, 864, 1, 721 };
mergesort(array, 0, 9);
int i = 0;
while (i < 10) {
printf("%d ", array[i++]);
}
printf("\n");
}
int main()
{
int i;
mergesort(a,0,13);
for(i=0;i<14;i++)
{printf("%d ",a[i]);}
return 0;
}
int main(void)
{
double arr[15] = {11.0,-77.22,-108.03,2056.1,35.44,12.14,-33.0,-9050.0,7.509,99.002,-14,17,0.9,98098,-4000};
int i,size = sizeof(arr)/sizeof(double);
mergesort(arr,size);
printf("sorted vector:\n");
for (i = 0; i < size ;i++)
printf("%f ", arr[i]);
return 0;
}
msort(int low,int high)
{
int mid;
if(low!=high)
{
mid=((low+high)/2);
msort(low,mid);
msort(mid+1,high);
mergesort(low,mid,high);
}
}
int main1() {
/*freopen("in.txt", "r", stdin); freopen("out.txt", "w", stdout);*/
int N;
while (scanf("%d", &N) != EOF) {
for (int i = 0; i < N; ++i)
scanf("%d", &A[i]);
printf("%lld\n", mergesort(0, N - 1));
}
return 0;
}
int main(int argc, char **argv)
{
int size, i;
nodePtr* POIs;
double start, stop;
scanf("%d", &size);
POIs = (nodePtr*) malloc (size*sizeof(nodePtr));
aux = (nodePtr*) malloc(size * sizeof(nodePtr));
for (i=0 ; i<size ; i++)
{
POIs[i]= (nodePtr) malloc (sizeof(node));
aux[i]=(nodePtr) malloc (sizeof(node));
scanf("%d", &POIs[i]->lat.d);
scanf("%d", &POIs[i]->lat.m);
scanf("%d", &POIs[i]->lat.s);
scanf("%d", &POIs[i]->lon.d);
scanf("%d", &POIs[i]->lon.m);
scanf("%d", &POIs[i]->lon.s);
POIs[i]->la = toDouble(POIs[i]->lat);
POIs[i]->lo = toDouble(POIs[i]->lon);
POIs[i]->ind = i;
scanf("%[^\n]",POIs[i]->text);
}
start = getCurrentTimeNano();
mergesort(POIs, size);
stop = getCurrentTimeNano();
/*
for (i = 0; i < size - 1; i++)
{
if ( compare(POIs[i],POIs[i+1]) == 0 )
{
if (POIs[i]->ind > POIs[i+1]->ind)
POIs = rem(POIs, i, &size);
else
POIs = rem(POIs, i+1, &size);
i--;
}
}
*/
for (i=0 ; i<size ; i++)
/*print(POIs[i]), */free(POIs[i]);
free(POIs);
printTimeElapsed(start, stop, "Nanosegundos");
return 0;
}
void test_mergesort() {
int A[] = {1, 4, 6, 2, 3, 5};
int B[] = {5, 3, 1, 2, 4, 6};
int C[] = {0, 0, 0, 0, 0, 0};
mergesort(A, C, 0, 6);
mergesort_iter(B, C, 5);
print_list(A, 6);
print_list(B, 5);
}
int main(void){
// int array[10]={30,20,40,35,5,50,45,10,25,15};
// int array[5]={10,8,6,5,4};
int array[3]={10,8,6};
int size=3;
mergesort(array,0,size-1);
}
int main() {
int n, q, i, x, casect= 0;
while(scanf("%d", &n) > 0) {
for(i = 0; i < n; i++)
scanf("%d", &s[i]);
tot = 0;
mergesort(s, n);
printf("Minimum exchange operations : %lld\n", tot);
}
return 0;
}
float MergeSort_char(int arraysize)
{
printf("Start MergeSort_char(%d)...\t\t",arraysize);
for(i=0;i<arraysize;i++)
strcpy(strdata[i],strdata2[i]);
startTime = clock();
mergesort(strdata,arraysize,sizeof(char **),compstr);
endTime = clock();
printf("MergeSort_char(%d) Complteted\n",arraysize);
return endTime - startTime;
}
void partition(int arr[],int low,int high)
{
int mid;
if(low<high)
{
mid=low+(high-low)/2;
partition(arr,low,mid);
partition(arr,mid+1,high);
mergesort(arr,low,mid,high);
}
}
static void test (uint64_t a[], size_t n)
{
size_t i;
for (i = 0; i < n; i++)
fprintf(stderr, " %" PRId64, a[i]);
fprintf(stderr, " -->");
mergesort(a, n);
for (i = 0; i < n; i++)
fprintf(stderr, " %" PRId64, a[i]);
fprintf(stderr, "\n");
}
int main(int argc, char const* argv[])
{
const int n=15;
int a[n]={11,7,3,9,14,0,12,5,15,10,2,8,1,4,6};
print_array(n,a);
mergesort(n,a);
print_array(n,a);
return 0;
}
float MergeSort_int(int arraysize)
{
printf("Start MergeSort_int(%d)...\t\t",arraysize);
for(i=0;i<arraysize;i++)
intdata[i]=intdata2[i];
startTime = clock();
mergesort(intdata,arraysize,sizeof(int),comp);
endTime = clock();
printf("MergeSort_int(%d) Complteted\n",arraysize);
return endTime - startTime;
}
