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Answer» <SCRIPT type="text/javascript"> var numbers = ["one", "TWO", "three", "four"]; numbers.unshift("zero"); document.write(" "+numbers.shift()); document.write(" "+numbers.shift()); document.write(" "+numbers.shift()); </script> This produces zero one two shift, unshift, push, and pop MAY be used on the same array. QUEUES are EASILY implemented using combinations. <script type="text/javascript"> var numbers = ["one", "two", "three", "four"]; numbers.unshift("zero"); document.write(" "+numbers.shift()); document.write(" "+numbers.shift()); document.write(" "+numbers.shift()); </script> This produces zero one two shift, unshift, push, and pop may be used on the same array. Queues are easily implemented using combinations.
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