# Geeksforgeeks Solution For " Distinct absolute array elements "

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Problem :- Distinct absolute array elements

Solution :-

Method 1 :-

#include <bits/stdc++.h>
using namespace std;
typedef unordered_map<int,int> um;
int main() {
//code
int t,num;
cin>>t;
um temp;
while(t--){
int n;
cin>>n;
while(n--){
cin>>num;
temp[abs(num)]++;
}
cout<<temp.size()<<endl;
temp.clear();
}
return 0;
}

Method 2 :-

#include <iostream>
#include<algorithm>
#include<vector>
using namespace std;
int main()
{
int t,c;
cin>>t;
while(t--)
{
int i,n;
c=0;
cin>>n;
vector<int> ar(n);
char s[n];

for(i=0;i<n;i++)
{
cin>>ar[i];
}
for(i=0;i<n;i++)
{
ar[i]=abs(ar[i]);
}
sort(ar.begin(),ar.end());

for(i=0;i<n;i++)
{
if(ar[i]=='\$')
c=1;
if(ar[i]==ar[i+1])
ar[i]='\$';
}
for(i=0;i<n;i++)
{
if(ar[i]=='\$')
continue;
c++;//cout<<ar[i]<<"\n";
}
cout<<c<<"\n";

}

return 0;

}

Output:-

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#### post written by: Ghanendra Yadav

Hi, I’m Ghanendra Yadav, SEO Expert, Professional Blogger, Programmer, and UI Developer. Get a Solution of More Than 500+ Programming Problems, and Practice All Programs in C, C++, and Java Languages. Get a Competitive Website Solution also Ie. Hackerrank Solutions and Geeksforgeeks Solutions. If You Are Interested to Learn a C Programming Language and You Don't Have Experience in Any Programming, You Should Start with a C Programming Language, Read: List of Format Specifiers in C.