From c9b6b9a5ca082fe7c1b6f58d7713f785a9eb6a5c Mon Sep 17 00:00:00 2001
From: Martial Simon <msimon_fr@hotmail.com>
Date: Mon, 15 Sep 2025 01:08:27 +0200
Subject: add: graphs et rushs

---
 graphs/piscine/hill_array/hill_array.c | 43 ++++++++++++++++++++++++++++++++++
 1 file changed, 43 insertions(+)
 create mode 100644 graphs/piscine/hill_array/hill_array.c

(limited to 'graphs/piscine/hill_array/hill_array.c')

diff --git a/graphs/piscine/hill_array/hill_array.c b/graphs/piscine/hill_array/hill_array.c
new file mode 100644
index 0000000..14d3a85
--- /dev/null
+++ b/graphs/piscine/hill_array/hill_array.c
@@ -0,0 +1,43 @@
+#include "hill_array.h"
+
+int top_of_the_hill(int tab[], size_t len)
+{
+    if (len == 0)
+    {
+        return -1;
+    }
+
+    int top = 0;
+    size_t i = 0;
+
+    while (i + 1 < len && tab[i] <= tab[i + 1])
+    {
+        if (tab[i] < 0 || tab[i + 1] < 0)
+        {
+            return -1;
+        }
+        if (tab[i] != tab[i + 1])
+        {
+            top = i + 1;
+        }
+        i++;
+    }
+
+    while (i + 1 < len && tab[i] >= tab[i + 1])
+    {
+        if (tab[i] < 0 || tab[i + 1] < 0)
+        {
+            return -1;
+        }
+        i++;
+    }
+
+    if (i + 1 == len)
+    {
+        return top;
+    }
+    else
+    {
+        return -1;
+    }
+}
-- 
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