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Added code to check for 0 divisor #246

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Added code to check for 0 divisor #246

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24 changes: 24 additions & 0 deletions src/com/jwetherell/algorithms/mathematics/Division.java
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Original file line number Diff line number Diff line change
Expand Up @@ -3,11 +3,19 @@
public class Division {

public static final long division(int a, int b) {
if(b == 0) {
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checks for zero divisor.

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");
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throws illegal argument exception.

}

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

Expand All @@ -22,6 +30,10 @@ 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);

Expand All @@ -38,6 +50,10 @@ 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);

Expand All @@ -55,6 +71,10 @@ 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;
Expand All @@ -76,6 +96,10 @@ 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);
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