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renamed conflicting mergesort function

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This commit is contained in:
Krishna Vedala 2020-04-07 18:33:49 -04:00
parent cee2468506
commit dc5d25690b
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1 changed files with 72 additions and 71 deletions
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49
sorting/merge_sort.c
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@ -1,4 +1,5 @@
#include <stdio.h>
#include <stdlib.h>
void swap(int *a, int *b) //To swap the variables//
{
@ -6,22 +7,27 @@ void swap (int *a,int *b)//To swap the variables//
t = *a;
*a = *b;
*b = t;
}
void merge(int a[], int l, int r, int n) //To merge //
{ int *b = (int*)malloc(n*sizeof(int));
{
int *b = (int *)malloc(n * sizeof(int));
int c = l;
int p1, p2;
p1 = l;p2=((l+r)/2)+1;
p1 = l;
p2 = ((l + r) / 2) + 1;
while ((p1 < ((l + r) / 2) + 1) && (p2 < r + 1))
{ if(a[p1] <= a[p2])
{ b[c++] = a[p1];
{
if (a[p1] <= a[p2])
{
b[c++] = a[p1];
p1++;
}
else
{b[c++] = a[p2];p2++;}
{
b[c++] = a[p2];
p2++;
}
};
if (p2 == r + 1)
@ -31,7 +37,6 @@ int c=l;
b[c++] = a[p1];
p1++;
};
}
else
{
@ -44,27 +49,27 @@ p2++;
for (c = l; c < r - l + 1; c++)
a[c] = b[c];
}
void mergesort(int a[],int n,int l,int r)
void merge_sort(int *a, int n, int l, int r)
{
if (r - l == 1)
{
if (a[l] > a[r])
swap(&a[l], &a[r]);
}
else if (l == r)
{}
{
}
else
{mergesort(a,n,l,(l+r)/2);
mergesort(a,n,((l+r)/2)+1,r);
{
merge_sort(a, n, l, (l + r) / 2);
merge_sort(a, n, ((l + r) / 2) + 1, r);
merge(a, l, r, n);
}
}
int main(void) { //main function//
int main(void)
{ //main function//
int *a, n, i;
scanf("%d", &n);
a = (int *)malloc(n * sizeof(int));
@ -72,20 +77,16 @@ for (i=0;i<n;i++)
{
scanf("%d", &a[i]);
}
mergesort(a,n,0,n-1);
merge_sort(a, n, 0, n - 1);
for (i = 0; i < n; i++)
{
printf(" %d",&a[i]);
printf(" %d", a[i]);
}
free(a);
return 0;
}