NRF 24L01 ,sending and receiving the array of long data

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What is the point of putting the 0th value from myArray1 into the 0th element of data, and then putting the 0th element of myArray2 in the same location?

answer: just i wanted to send the data in a loop means the oth number of array till the 20 th one

What is the point of sending all 1000 bytes of data after putting 1 value in the array?
answer : any help appreciated

Why do you need a 500 element array to hold 20 ints?
answer : any help appreciated

Why do you need ints to hold byte values?
answer : any help appreciated

Why do you send data 20 times, and read data 25 times?
answer :i wanted to receive this 20 data any help appreciated
So many questions...