Circle T or F for each of the following statements to indicate whether the statement is true or false, respectively. a) Heap sort can sort an array in place
b) For a dynamic programming algorithm, computing all values in a bottom up fashion is asymptotically faster than using top-down recursion and memorization.
c) It is not possible to have different keys being hashed to the same position in a hash table.
d) An ideal hash table has average-case time complexity of O(l) for lookups.

Are special combinations of keys that tell a computer to perform a command. keypads multi-keys combinations shortcuts

What are the 12 colors of the spectrum called?

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?