Suppose that the bag class is efficiently implemented with a fixed array with a capacity of 4000, as in Chapter 3 of the class text. We execute these statements: bag b; b. insert(5); b. insert(4); b. insert(6); b. erase_one(5);

b.used is 2, b.data[0] is 4, b.data[1] is 6

Explanation:

bag b;

b.insert(5); // b has 5

b.insert(4); // b has 5,4

b.insert(6); // b has 5,4,6

b.erase_one(5); // now 5 is removed , b has 4,6

so no:of elements b.used is 2

b[0]=4;

b[1]=6;

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