DSA/algorithms/CPlusPlus/Arrays/index-of-smallest-element-o...

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//index of smallest element of array
/* Example :
size of array =5
Let array be ,arr[5]={9,4,1,5,8}
here smallest element of array is 1 which is at index 2 of array
output = 2 that is index of smallest element of array.
Time complexity = O(n)
*/
#include<iostream>
using namespace std;
int main()
{
int size,j;
cout<<"enter the size of array";
cin>>size;
int arr[size];
for(int i=0;i<size;i++)
{
cin>>arr[i];
}
//considering the element at zero index to be smallest
int min=arr[0];
int smallest_index=0;
//comparing min to all other elements
for(j=0;j<size;j++)
{
if(min>arr[j])
{
min=arr[j];
smallest_index=j;
}
}
cout<<"index of smallest element of array is"<<smallest_index;
}