subject

Please do in python. Given an array of integers, create a 2-dimensional array where the first element is a distinct value from the array and the second element is the value’s frequency within the array. Sort the resulting array descending by frequency. If multiple values have the same frequency, they should be sorted ascending. Example: arr = [3,3,1,2,1]There are two values, 3&1 each within frequency of 2, and one value 2 with a frequency of 1: [[3,2], [1,2], [2,1]] Sort the 2-dimensional descending by frequency: [[3,2], [1,2], [2,1]] Sort the 2-dimensional array descending by values with matching frequencies [[1,2], [3,2], [2,1]]

ansver
Answers: 3

Another question on Computers and Technology

question
Computers and Technology, 22.06.2019 21:40
Develop a function to create a document in the mongodb database “city” in the collection “inspections.” be sure it can handle error conditions gracefully. a. input -> argument to function will be set of key/value pairs in the data type acceptable to the mongodb driver insert api call b. return -> true if successful insert else false (require a screenshot)
Answers: 2
question
Computers and Technology, 23.06.2019 09:30
After you present a proposal, the committee starts asking you questions, some beyond the strict focus of your proposal. they ask questions about implications in other fields and knowledge about other fields. you are asked to redo your proposal. what is most likely missing? breadth of material depth of material clarity of material details of material
Answers: 1
question
Computers and Technology, 23.06.2019 19:40
Use a physical stopwatch to record the length of time it takes to run the program. calculate the difference obtained by calls to the method system.currenttimemillis() just before the start of the algorithm and just after the end of the algorithm. calculate the difference obtained by calls to the method system.currenttimemillis() at the start of the program and at the end of the program so that the elapsed time includes the display of the result. use the value returned by the method system.currenttimemillis() just after the end of the algorithm as the elapsed time.
Answers: 3
question
Computers and Technology, 23.06.2019 22:30
Lakendra finished working on her monthly report. in looking it over, she saw that it had large blocks of white space. what steps could lakendra take to reduce the amount of white space?
Answers: 3
You know the right answer?
Please do in python. Given an array of integers, create a 2-dimensional array where the first elemen...
Questions
question
Computers and Technology, 18.12.2020 21:00
question
Mathematics, 18.12.2020 21:00
Questions on the website: 13722367