From 6c6328375c55683645146909b7ab760d0de0d463 Mon Sep 17 00:00:00 2001
From: Santo Cariotti <dcariotti24@gmail.com>
Date: Sun, 18 Oct 2020 18:56:43 +0200
Subject: chore: name of first year folder

---
 1_anno/Programmazione_2/algorithms/log.cc | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 1_anno/Programmazione_2/algorithms/log.cc

(limited to '1_anno/Programmazione_2/algorithms/log.cc')

diff --git a/1_anno/Programmazione_2/algorithms/log.cc b/1_anno/Programmazione_2/algorithms/log.cc
new file mode 100644
index 0000000..1e49a2e
--- /dev/null
+++ b/1_anno/Programmazione_2/algorithms/log.cc
@@ -0,0 +1,25 @@
+#include<iostream>
+
+using namespace std;
+
+double log(double n) {
+    if(n <= 2) return 1.0;
+    return 1.0 + log(n/2);
+}
+
+int log2(double n) {
+    int a = 1;
+
+    while(n > 2) {
+        n /= 2;
+        ++a;
+    }
+
+    return a;
+}
+
+int main() {
+    for(int i = 0; i < 25; ++i)
+        cout << i << ' ' << log(i) << ' ' << log2(i) << endl;
+    return 0;
+}
-- 
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