Using assert

class Histogram {

int numOfBuckets;

int bucketSize;

int buckets[];

:

:

public void addData(int data)

{

assert(data >= 0 && data < numOfBuckets*bucketSize,

�data� + data + �is out of range.�);

buckets[(data-1)/bucketSize]++;

}

:

:

}

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