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Author: Pankajcoder1

best_approach/get_all_factor.cpp

@@ -0,0 +1,56 @@
+// time complexity of this algo is sqrt(n);
+/*
+	written by pankaj kumar.
+*/
+#include<algorithm>
+#include<string.h>
+#include<iostream>
+#include<vector>
+#include<cmath>
+#include<set>
+using namespace std;
+typedef long long ll ;
+typedef vector<int> vi;
+typedef vector<pair<int,int>> vpi;
+typedef vector<ll> vl;
+typedef vector<pair<ll,ll>> vpl;
+typedef vector<string> vs;
+typedef set<string> ss;
+typedef set<int> si;
+typedef set<ll> sl;
+typedef set<pair<int,int>> spi;
+typedef set<pair<ll,ll>> spl;
+// macros
+#define pan cin.tie(0);cout.tie(0);ios_base::sync_with_stdio(0);
+#define mod 1000000007;
+#define phi 1.618
+#define line cout<<endl;
+/* ascii value 
+A=65,Z=90,a=97,z=122
+*/
+
+int main()
+{
+	int a,count=0;
+	cout<<"Enter two number : ";
+	cin>>a;
+	cout<<"List of all factor of "<<a<<"is : ";
+	for(int i=1;i<=sqrt(a);i++)
+	{
+		if(i%a==0)
+		{
+			if(a/i==i)
+			{
+				count++;
+				cout<<i<<" ";
+			}
+			else
+			{
+				count+=2;
+				cout<<a/i<<" "<<i;
+			}
+		}
+	}
+	line;
+	cout<<"Hence total no of factor of "<<a<<"is "<<count<<endl;
+}