From 3d95139e7eca9396debcc98b5fee7f8d88bef809 Mon Sep 17 00:00:00 2001
From: Geinzit <heinz03huang@gmail.com>
Date: Wed, 3 Apr 2024 22:08:30 +0800
Subject: [PATCH] improve code style.

---
 src/main/java/seedu/duke/Calculator.java      |  6 +--
 src/main/java/seedu/duke/Checker.java         |  7 ++--
 src/main/java/seedu/duke/Problem.java         |  2 -
 .../java/seedu/duke/ProblemGenerator.java     | 39 ++-----------------
 4 files changed, 9 insertions(+), 45 deletions(-)

diff --git a/src/main/java/seedu/duke/Calculator.java b/src/main/java/seedu/duke/Calculator.java
index 7084265fa3..eb8f965b21 100644
--- a/src/main/java/seedu/duke/Calculator.java
+++ b/src/main/java/seedu/duke/Calculator.java
@@ -68,8 +68,7 @@ private static ArrayList<Object> toSuffix(ArrayList<Object> formula) {
                 while( !opStack.empty()){
                     if(!prior(op,opStack.peek()) ){
                         suffix.add(opStack.pop());
-                    }
-                    else {
+                    } else {
                         break;
                     }
                 }
@@ -127,8 +126,7 @@ private static ArrayList<Object> toFormula(StringBuilder sb) {
                 Integer num = Integer.parseInt(sb.substring(numStart,numEnd)) ;
                 formula.add(num);
                 i = numEnd;
-            }
-            else{
+            } else{
                 formula.add (Character.toString(sb.charAt(i)) );
                 i++;
             }
diff --git a/src/main/java/seedu/duke/Checker.java b/src/main/java/seedu/duke/Checker.java
index ac51d02fb9..2e3b5d2f7c 100644
--- a/src/main/java/seedu/duke/Checker.java
+++ b/src/main/java/seedu/duke/Checker.java
@@ -10,8 +10,8 @@ public class Checker {
     private int correctNumber;
     private double accuracy;
     private long time;
-    List<Problem> wrongProblem= new ArrayList<>();
-    List<String> wrongAnswer = new ArrayList<>();
+    private List<Problem> wrongProblem= new ArrayList<>();
+    private List<String> wrongAnswer = new ArrayList<>();
 
     public Checker(Test test){
         assert test != null: "Input null test!";
@@ -50,8 +50,7 @@ void getUserAnswer() {
             if (checkCorrectness(problem, answer)) {
                 correctNumber++;
                 isCorrect[i] = true;
-            }
-            else {
+            } else {
                 wrongAnswer.add(userInput);
                 wrongProblem.add(problem);
             }
diff --git a/src/main/java/seedu/duke/Problem.java b/src/main/java/seedu/duke/Problem.java
index 9783749c03..454bc8329a 100644
--- a/src/main/java/seedu/duke/Problem.java
+++ b/src/main/java/seedu/duke/Problem.java
@@ -18,8 +18,6 @@ public String unsolved() {
         return description + "__";
     }
 
-    public String getDescription() {return description;}
-
     public double getAnswer() {
         return answer;
     }
diff --git a/src/main/java/seedu/duke/ProblemGenerator.java b/src/main/java/seedu/duke/ProblemGenerator.java
index 4803735b52..cbd043627f 100644
--- a/src/main/java/seedu/duke/ProblemGenerator.java
+++ b/src/main/java/seedu/duke/ProblemGenerator.java
@@ -91,49 +91,18 @@ private Test generate(HashMap<String, String> parameter) {
         Test test = new Test(op, maxDigit, number,length);
 
         for (int i = 0; i < number; i++) {
-/*
-            String description;
-            double answer;
-            int max = (int) Math.pow(10, maxDigit);
-            int op1 = (int) (Math.random() * max);
-            int op2 = (int) (Math.random() * max);
-            String tempOperator = operations.get((int) (Math.random() * operations.size()));
-
-
-            switch (tempOperator) {
-            case ("+"):
-                answer = op1 + op2;
-                break;
-            case ("-"):
-                answer = op1 - op2;
-                break;
-            case ("*"):
-                answer = op1 * op2;
-                break;
-            case ("/"):
-                if (op2 == 0) {
-                    continue;
-                }
-                answer = (double) op1 / op2;
-                break;
-            default:
-                continue;
-            }
-
-            description = op1 + tempOperator + op2 + "=";
-*/
 
             StringBuilder descriptionBuilder = new StringBuilder();
             double answer;
             int max = (int) Math.pow(10, maxDigit);
 
             for (int j = 0;j<length;j++){
-                int temp_random_number = (int) (Math.random() * max);
-                descriptionBuilder.append(temp_random_number);
+                int tempRandomNumber = (int) (Math.random() * max);
+                descriptionBuilder.append(tempRandomNumber);
 
                 if(j != length - 1){
-                    String temp_random_operator = operations.get((int) (Math.random() * operations.size()));
-                    descriptionBuilder.append(temp_random_operator);
+                    String tempRandomOperator = operations.get((int) (Math.random() * operations.size()));
+                    descriptionBuilder.append(tempRandomOperator);
                 }
             }