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main.c
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main.c
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#include<stdio.h>
#include<stdlib.h>
void merge(int arr[], int l, int m, int r){
int i, j, k;
int n1=m-l+1;
int n2=r-m;
int L[n1];
int R[n2];
for(i=0;i<n1;i++)
L[i]=arr[l+i];
for(j=0;j<n2;j++)
R[j]=arr[m+1+j];
i=0;
j=0;
k=l;
while(i<n1 && j<n2){
if(L[i]<R[j]){
arr[k]=L[i];
i++;
}
else{
arr[k]=R[j];
j++;
}
k++;
}
if(i<n1){
arr[k]=L[i];
i++;
k++;
}
else if(j<n2){
arr[k]=R[j];
j++;
k++;
}
}
void mergesort(int arr[],int l,int r){
if(l<r){
int m=l+(r-l)/2;
mergesort(arr,l,m);
mergesort(arr,m+1,r);
merge(arr,l,m,r);
}
}
void print(int arr[],int size){
for(int i=0;i<size;i++){
printf("%d\n",arr[i]);
}
printf("\n");
}
int main(){
printf("Enter number of elements in the array : ");
scanf("%d", &n);
int arr[n];
for(int i = 0; i < n; i++)
scanf("%d", arr[i]);
printf("Given array:\n");
print(arr,n);
mergesort(arr,0,n-1);
printf("Sorted array:\n");
print(arr,n);
return 0;
}