implement utility functions: issue ProAlgos#99

C++/include/utils/data_validation.hpp

@@ -0,0 +1,51 @@
+/*
+    Various utility functions used for data validation
+*/
+#include <string>
+#include <random>
+#include <ctime>
+#define UP_A 65
+#define UP_Z 91
+
+#define LOW_A 97
+#define LOW_Z 122
+
+std::string to_upper_case(std::string &s){
+    std::string upper;
+    for(int i = 0; i<s.length();i++){
+        if( s.at(i) >= LOW_A && s.at(i) <= LOW_Z){
+            upper+=(s.at(i) - 32);
+        }else{
+            upper += s.at(i);
+        }
+    }
+    return upper;
+}
+
+std::string to_lower_case(std::string &s){
+    std::string lower;
+    for(int i = 0; i<s.length();i++){
+        if( s.at(i) >= UP_A && s.at(i) <= UP_Z){
+            lower+=(s.at(i) + 32);
+        }else{
+            lower += s.at(i);
+        }
+    }
+    return lower;
+}
+
+double get_random_double(double min, double max){
+    std::mt19937 generator;
+    generator.seed(std::time(0));    
+    std::uniform_real_distribution<double> random_double(min,max);
+    double random_double_value = random_double(generator);
+    return random_double_value;
+}
+
+int get_random_int(int min, int max){
+    std::mt19937 generator;
+    generator.seed(std::time(0));
+    std::uniform_int_distribution<uint32_t> random_int(min,max);
+    int random_integer = random_int(generator);
+    return random_integer;
+}