Computers and Technology, 07.03.2020 05:03 mzynique2000
Mystery_string = "Hello! What a fine day it is today." mystery_character = "a" # #You may modify the lines of code above, but don't move them! #When you Submit your code, we'll change these lines to #assign different values to the variables. #Write some code below that will count and print how many #times mystery_character appears in mystery_string. You may #not use the string class's .count method. # #With the original values for mystery_string and #mystery_character, your code should initially print 4. Only #count characters with the same case as mystery_character #(in other words, here you would ignore capital A). #Add your code here!
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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?
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Which of the following characters is acceptable to use in a filename? ? / – %
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Computers and Technology, 25.06.2019 00:10
Select the correct answer sarah wants to use a device to input signatures on electronic documents. which input device will be most suitable for her? a digital pen b. laser pen c keyboard d. touchscreen reset next
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Mystery_string = "Hello! What a fine day it is today." mystery_character = "a" # #You may modify the...
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