Verbose commenting of code.

src/main.rs

@@ -25,40 +25,54 @@
 extern crate rand;
 
 fn main() {
+	// set number of prisoners in experiment
 	let size = 100;
 
-	// initialize the boxes with randomly assigned numbers
+	// initialize the boxes with capacity for `size` number of boxes
 	let mut boxes:Vec<u32> = Vec::with_capacity(size as usize);
 
 	{
+		// create vector of numbers to select randomly from
 		let mut nums:Vec<u32> = (0..size).collect();
 
 		while nums.len() > 0
 		{
+			// get a random index for nums
 			let rand_i:usize = rand::random::<usize>() % nums.len();
+			// add that element to the boxes vector
 			boxes.push(nums[rand_i]);
+			// remove the entry from the nums vector
 			nums.remove(rand_i);
 		}
 	}
 
-	// have prisoners find their number
+	// assume that all the prisoners have found their number
 	let mut all_found = true;
+	// for every prisoner in the jail
 	for i in 0..size
 	{
+		// the next (first) box the prisoner is to open is the one with his number (`i`)
 		let mut next_box:usize = i as usize;
+		// assume the prisoner does not find his box
 		let mut found = false;
+		// for every attempt the prisoner has (i.e. `size/2`)
 		for _j in 0..(size/2)
 		{
+			// if the number inside the box is his number
 			if boxes[next_box] == i
 			{
+				// assign `found` to true
 				found = true;
+				// stop looking through more boxes.
 				break;
 			}
 			else
 			{
+				// if not found set the next_box to the number contained in the current box
 				next_box = boxes[next_box] as usize;
 			}
 		}
+		// if a prisoner has not found his number in `size/2` attempts
 		if !found
 		{
 			all_found = false;