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Highest and lowest/README.md

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+# Highest and Lowest
+
+In this little assignment you are given a string of space separated numbers, and have to return the highest and lowest number.
+## Examples
+
+    highAndLow("1 2 3 4 5");  // return "5 1"
+    highAndLow("1 2 -3 4 5"); // return "5 -3"
+    highAndLow("1 9 3 4 -5"); // return "9 -5"
+
+## Notes
+
+    All numbers are valid Int32, no need to validate them.
+    There will always be at least one number in the input string.
+    Output string must be two numbers separated by a single space, and highest number is first.
+

Highest and lowest/main.cpp

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+#include <sstream>
+#include <cstring>
+#include <vector>
+#include <algorithm>
+
+std::string highAndLow(const std::string& numbers){
+  std::vector<int> nums;
+  std::istringstream iss(numbers);
+  int num;
+  while(iss >> num) {
+    nums.push_back(num);
+  }
+  auto min_max = std::minmax_element(nums.begin(), nums.end());
+  return std::is_string(*min_max.second()) + " " +  std::string(*min_max.first();)
+}