included notes to work out what num represents; by breaking down the expression

Author: Alex-Os-Dev-Lab

Sprint-1/1-key-exercises/4-random.js

@@ -3,7 +3,32 @@ const maximum = 100;
 
 const num = Math.floor(Math.random() * (maximum - minimum + 1)) + minimum;
 
+console.log(num);
+
 // In this exercise, you will need to work out what num represents?
 // Try breaking down the expression and using documentation to explain what it means
 // It will help to think about the order in which expressions are evaluated
 // Try logging the value of num and running the program several times to build an idea of what the program is doing
+
+// when first evaluating the full num expression i got the answer 99
+// The second time i got 50 (which means .floor and .random are doing something to change the value of the expression each run)
+
+// The order of operations is as follows:
+
+// 1. The expression inside the parentheses is evaluated first: (maximum - minimum + 1) which gives us 100 - 1 + 1 = 100
+// 2. Then Math.random() is called, which generates a random decimal number between 0 and 1.
+// 3. The result of Math.random() is multiplied by the result of step 1, giving us a random decimal number between 0 and 100.
+// 4. Math.floor() is then called on the result of step 3, which rounds it down to the nearest whole number, giving us a random integer between 0 and 99.
+// 5. Finally, the minimum value (1) is added to the result of step 4, giving us a random integer between 1 and 100.
+
+// When num = 99
+// math.random gives us 0.98 (or something close to it)
+// 0.98 * 100 = 98
+// math.floor(98) = 98
+// 98 + 1 = 99
+
+// When num = 50
+// math.random gives us 0.49 (or something close to it)
+// 0.49 * 100 = 49
+// math.floor(49) = 49
+// 49 + 1 = 50