Implement solution

diff --git a/test.html b/test.html
index bcf6517f5521601625908a6bb90458bd416dba07..6d79dbe1900de869bd960acb875481b37df50cff 100644 (file)
--- a/test.html
+++ b/test.html
@@ -60,9 +60,98 @@
             // be in a random order. The order of the choices within each question should also be randomized.
             //
             function randomizeTest (test) {
-                //
-                // Your code to randomize questions and answers goes here
-                //
+
+               // initialize outputs
+               let questionsReordered = [];
+               let choicesReordered = [];
+               let answersReordered = [];
+
+               // Track whether we've previously chosen a randomly selected question
+               // with an array like [true, false, false, true]
+               let questionChosen = [];
+               for(i=0; i<test.questions.length; i++) {
+                   questionChosen.push(false);
+               }
+
+               // Do this until we've chosen every question
+               while(true) {
+                   let trialQuestionIndex = Math.floor(Math.random() * test.questions.length);
+                   if(questionChosen[trialQuestionIndex]) {
+                       continue;
+                   }
+                   // We've found a question we haven't chosen before
+
+                   // Record it so we don't choose it again
+                   questionChosen[trialQuestionIndex] = true;
+                   // Add the chosen question to the output
+                   questionsReordered.push(test.questions[trialQuestionIndex]);
+
+                   // initialize the outputs for this question
+                   let questionChoices = test.choices[trialQuestionIndex];
+                   let questionChoicesReordered = [];
+                   let questionAnswers = test.answers[trialQuestionIndex];
+                   let questionAnswersReordered = [];
+
+                   // Track whether we've previously chosen a randomly selected choice
+                   // with an array like [true, false, false, true]
+                   let choiceChosen = [];
+                   for(i=0; i<questionChoices.length; i++) {
+                       choiceChosen.push(false);
+                   }
+
+                   // Do this until we've chosen every choice for this question
+                   while(true) {
+                       let trialChoiceIndex = Math.floor(Math.random() * questionChoices.length);
+                       if(choiceChosen[trialChoiceIndex]) {
+                           continue;
+                       }
+                       // We've found a choice for this question we haven't chosen before
+
+                       // Record it so we don't choose it again
+                       choiceChosen[trialChoiceIndex] = true;
+                       // Add the chosen choice and answer to the output
+                       questionChoicesReordered.push(questionChoices[trialChoiceIndex]);
+                       questionAnswersReordered.push(questionAnswers[trialChoiceIndex]);
+
+                       // Check if we're done selecting choices for this question
+                       let unchosenQuestionChoicesRemain = false;
+                       for(i=0; i<choiceChosen.length; i++) {
+                           if(!choiceChosen[i]) {
+                               unchosenQuestionChoicesRemain = true;
+                           }
+                       }
+
+                       if(unchosenQuestionChoicesRemain) {
+                           continue;
+                       }
+                       break;
+                   }
+
+                   // Add the choices/answers to the output data structures
+                   choicesReordered.push(questionChoicesReordered);
+                   answersReordered.push(questionAnswersReordered);
+
+                   // Check if we're done selecting questions
+                   let unchosenQuestionsRemain = false;
+                   for(i=0; i<questionChosen.length; i++) {
+                       if(!questionChosen[i]) {
+                           unchosenQuestionsRemain = true;
+                       }
+                   }
+
+                   if(unchosenQuestionsRemain) {
+                       continue;
+                   }
+
+                   break;
+               }
+
+               // set modified outputs
+               test.questions = questionsReordered;
+               test.choices = choicesReordered;
+               test.answers = answersReordered;
+
+               return test;
             }
 
             function Test (questions, choices, answers) {