From 3faeb46effe105f277b9649d0c34a1c11ddfc618 Mon Sep 17 00:00:00 2001
From: Rehan Siddiqi <rehan1234444@gmail.com>
Date: Fri, 1 Nov 2024 14:42:15 -0400
Subject: [PATCH] handle when divisor b is zero in all division methods

---
 .../algorithms/mathematics/Division.java       | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/src/com/jwetherell/algorithms/mathematics/Division.java b/src/com/jwetherell/algorithms/mathematics/Division.java
index c133f741..2425632d 100644
--- a/src/com/jwetherell/algorithms/mathematics/Division.java
+++ b/src/com/jwetherell/algorithms/mathematics/Division.java
@@ -3,11 +3,17 @@
 public class Division {
 
     public static final long division(int a, int b) {
+        if (b == 0) {
+            throw new IllegalArgumentException("Divisor cannot be zero.");
+        }
         long result = ((long) a) / ((long) b);
         return result;
     }
 
     public static final long divisionUsingLoop(int a, int b) {
+        if (b == 0) {
+            throw new IllegalArgumentException("Divisor cannot be zero.");
+        }
         int absA = Math.abs(a);
         int absB = Math.abs(b);
 
@@ -22,6 +28,9 @@ public static final long divisionUsingLoop(int a, int b) {
     }
 
     public static final long divisionUsingRecursion(int a, int b) {
+        if (b == 0) {
+            throw new IllegalArgumentException("Divisor cannot be zero.");
+        }
         int absA = Math.abs(a);
         int absB = Math.abs(b);
 
@@ -38,6 +47,9 @@ public static final long divisionUsingRecursion(int a, int b) {
     }
 
     public static final long divisionUsingMultiplication(int a, int b) {
+        if (b == 0) {
+            throw new IllegalArgumentException("Divisor cannot be zero.");
+        }
         int absA = Math.abs(a);
         int absB = Math.abs(b);
 
@@ -55,6 +67,9 @@ public static final long divisionUsingMultiplication(int a, int b) {
     }
 
     public static final long divisionUsingShift(int a, int b) {
+        if (b == 0) {
+            throw new IllegalArgumentException("Divisor cannot be zero.");
+        }
         int absA = Math.abs(a);
         int absB = Math.abs(b);
         int tempA, tempB, counter;
@@ -76,6 +91,9 @@ public static final long divisionUsingShift(int a, int b) {
     }
 
     public static final long divisionUsingLogs(int a, int b) {
+        if (b == 0) {
+            throw new IllegalArgumentException("Divisor cannot be zero.");
+        }
         long absA = Math.abs(a);
         long absB = Math.abs(b);
         double logBase10A = Math.log10(absA);