Create find-greatest-common-divisor-of-array.cpp

Author: kamyu104

C++/find-greatest-common-divisor-of-array.cpp

@@ -0,0 +1,10 @@
+// Time:  O(n)
+// Space: O(1)
+
+class Solution {
+public:
+    int findGCD(vector<int>& nums) {
+        return gcd(*min_element(cbegin(nums), cend(nums)),
+                   *max_element(cbegin(nums), cend(nums)));
+    }
+};