arrays

问题 Yes, I know this has been discussed many times before, and I read all the posts and comments regarding this question, but still can't seem to understand something. One of the options that MSDN offers to solve this violation, is by returning a collection (or an interface which is implemented by a collection ) when accessing the property, however clearly it does not solve the problem because most collections are not immutable and can also be changed. Another possibility I've seen in the answers

问题 Yes, I know this has been discussed many times before, and I read all the posts and comments regarding this question, but still can't seem to understand something. One of the options that MSDN offers to solve this violation, is by returning a collection (or an interface which is implemented by a collection ) when accessing the property, however clearly it does not solve the problem because most collections are not immutable and can also be changed. Another possibility I've seen in the answers

问题 I'm triying to understand method references and I don't know how with this "Book[]::new" it can create an array with the right number of elements. Book[] arrayBook = stBooks.toArray(Book[]::new); In order to create the array when I use the second and third option I have to specify a Functional Interface that Receive an Int and return a new Array. But, in the first option I don't know where is the implementation and where you specify the number or elements that is going to have the array. I

问题 I am trying to find the maximum sum of two elements in an array minus the distance between them. Specifically I am trying to calculate max{ a[i]+a[j]-|i-j| } I am currently stuck. I have obviously considered the naive approach (O(n^2)). However ,I am pretty sure there is a better ,more efficient approach (O(nlogn)) or even O(n). Can someone please help me on how to approach the problem. I would be grateful if anyone threw some hints or a simple idea to have something to start from. Sorting

问题 I am trying to find the maximum sum of two elements in an array minus the distance between them. Specifically I am trying to calculate max{ a[i]+a[j]-|i-j| } I am currently stuck. I have obviously considered the naive approach (O(n^2)). However ,I am pretty sure there is a better ,more efficient approach (O(nlogn)) or even O(n). Can someone please help me on how to approach the problem. I would be grateful if anyone threw some hints or a simple idea to have something to start from. Sorting

问题 I would like to know how to get the bytes of an AVAudioCompressedBuffer and then reconstruct an AVAudioCompressedBuffer from the bytes. The code below takes an AVAudioPCMBuffer, compresses it with AVAudioConverter to AVAudioCompressedBuffer (iLBC) and gets the bytes, then converts the bytes back to AVAudioCompressedBuffer (iLBC) and uncompresses back to AVAudioPCMBuffer and plays the buffer. Something goes wrong with converting the AVAudioCompressedBuffer to bytes and back. If I skip this

问题 I would like to know how to get the bytes of an AVAudioCompressedBuffer and then reconstruct an AVAudioCompressedBuffer from the bytes. The code below takes an AVAudioPCMBuffer, compresses it with AVAudioConverter to AVAudioCompressedBuffer (iLBC) and gets the bytes, then converts the bytes back to AVAudioCompressedBuffer (iLBC) and uncompresses back to AVAudioPCMBuffer and plays the buffer. Something goes wrong with converting the AVAudioCompressedBuffer to bytes and back. If I skip this

问题 I am trying to sort a class array that has 5 values inside of it. 3 strings and 2 ints . I would like to sort the array from highest to lowest on the int values but can't figure out how to do so. My though process is to send the array into the class and then pull out the correct int value and sort for each array location without changing the other values of that location. How can I pull out these values so that I can sort them accordingly? If I could then I would know how to finish my code.

问题 I am trying to sort a class array that has 5 values inside of it. 3 strings and 2 ints . I would like to sort the array from highest to lowest on the int values but can't figure out how to do so. My though process is to send the array into the class and then pull out the correct int value and sort for each array location without changing the other values of that location. How can I pull out these values so that I can sort them accordingly? If I could then I would know how to finish my code.

问题 Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers. Want to improve this question? Update the question so it's on-topic for Stack Overflow. Closed 6 years ago . Improve this question A sample of the statement to type when using the method is System.arraycopy(data, i, data, i+1, data.length-i-1); The way it works according to my book is that the system move all element from i onward one position up. But intuitively I will think that the