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swap_alternate.cpp
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47 lines (46 loc) · 896 Bytes
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#include<bits/stdc++.h>
using namespace std;
void swap1(int arr[],int n)
{
for(int i=0;i<n;i=i+2)
{
if((i+1)<n)
{
arr[i]=(arr[i] ^ arr[i+1]);
arr[i+1]=(arr[i] ^ arr[i+1]);
arr[i]=(arr[i] ^ arr[i+1]);
}
}
}
int main()
{
int n;
cin>>n;
int arr[n];
for(int i=0;i<n;i++)
cin>>arr[i];
//swap alternate nos.
/* if((n&1)==1)
{
//odd
for(int i=0;i<n-1;i=i+2)
{
arr[i]=(arr[i] ^ arr[i+1]);
arr[i+1]=(arr[i] ^ arr[i+1]);
arr[i]=(arr[i] ^ arr[i+1]);
}
}
else
{
for(int i=0;i<n;i=i+2)
{
arr[i]=(arr[i] ^ arr[i+1]);
arr[i+1]=(arr[i] ^ arr[i+1]);
arr[i]=(arr[i] ^ arr[i+1]);
}
} */
swap1(arr,n);
for(auto x:arr)
cout<<x<<" ";
return 0;
}