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Added Error Handling for Dividing by Zero #256

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11 changes: 11 additions & 0 deletions .project
Original file line number Diff line number Diff line change
Expand Up @@ -14,4 +14,15 @@
<natures>
<nature>org.eclipse.jdt.core.javanature</nature>
</natures>
<filteredResources>
<filter>
<id>1730486179290</id>
<name></name>
<type>30</type>
<matcher>
<id>org.eclipse.core.resources.regexFilterMatcher</id>
<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
</matcher>
</filter>
</filteredResources>
</projectDescription>
25 changes: 25 additions & 0 deletions src/com/jwetherell/algorithms/mathematics/Division.java
Original file line number Diff line number Diff line change
Expand Up @@ -3,11 +3,20 @@
public class Division {

public static final long division(int a, int b) {
// Error if divide by zero
if (b == 0) {
throw new IllegalArgumentException("/ by zero");
}
long result = ((long) a) / ((long) b);
return result;
}

public static final long divisionUsingLoop(int a, int b) {
// Error if divide by zero
if (b == 0) {
throw new IllegalArgumentException("/ by zero");
}

int absA = Math.abs(a);
int absB = Math.abs(b);

Expand All @@ -22,6 +31,10 @@ public static final long divisionUsingLoop(int a, int b) {
}

public static final long divisionUsingRecursion(int a, int b) {
// Error if divide by zero
if (b == 0) {
throw new IllegalArgumentException("/ by zero");
}
int absA = Math.abs(a);
int absB = Math.abs(b);

Expand All @@ -38,6 +51,10 @@ public static final long divisionUsingRecursion(int a, int b) {
}

public static final long divisionUsingMultiplication(int a, int b) {
// Error if divide by zero
if (b == 0) {
throw new IllegalArgumentException("/ by zero");
}
int absA = Math.abs(a);
int absB = Math.abs(b);

Expand All @@ -55,6 +72,10 @@ public static final long divisionUsingMultiplication(int a, int b) {
}

public static final long divisionUsingShift(int a, int b) {
// Error if divide by zero
if (b == 0) {
throw new IllegalArgumentException("/ by zero");
}
int absA = Math.abs(a);
int absB = Math.abs(b);
int tempA, tempB, counter;
Expand All @@ -76,6 +97,10 @@ public static final long divisionUsingShift(int a, int b) {
}

public static final long divisionUsingLogs(int a, int b) {
// Error if divide by zero
if (b == 0) {
throw new IllegalArgumentException("/ by zero");
}
long absA = Math.abs(a);
long absB = Math.abs(b);
double logBase10A = Math.log10(absA);
Expand Down