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What is the efficient way to merge ordered arrays in java

Idea analysis: compare the two pointers from front to back, and then copy the remaining data into the merged array. In fact, this is also the core code of merge sort. Merge sort (split first and then merge) divide and conquer.

Dec 14, 2020 pm 04:00 PM

java method ordered array

What are the ways to define arrays in java

The methods for defining arrays in java are: 1. [array type [] array name = new array type [array length]]; 2. [array type [] array name = {array element}]; 3. [array type [] array name = new array type [] {array element}].

Dec 14, 2020 pm 03:27 PM

java array

Use Java to realize the function of withdrawing cash to Alipay account

Java introductory tutorial: This article shares the source code for using Java to realize the function of withdrawing cash to an Alipay account. It has certain reference value and I hope it can be helpful to everyone.

Dec 10, 2020 pm 04:21 PM

java Alipay

Java small test seeks to complete the number within 1000

Idea: 1. For loop, assign i a value of 1~1000; 2. Find the numbers that can divide i and add them together; 3. If the sum of the added numbers is equal to i, output i.

Dec 08, 2020 pm 03:12 PM

java

Is java front-end or back-end?

Java is a back-end language, a high-level programming language launched by Sun Microsystems in May 1995; Java language can run on multiple platforms, such as Windows, Mac OS and other various UNIX versions of the system.

Dec 03, 2020 am 09:29 AM

java

Java calculates the sum of binary strings

Java introductory tutorial: This article shares with you the method of calculating the sum of binary strings in Java. It has certain reference value and I hope it can be helpful to everyone.

Dec 01, 2020 pm 02:45 PM

java binary string

What is the difference between array and linked list

The difference between arrays and linked lists is: 1. Arrays allocate memory statically, and linked lists allocate memory dynamically; 2. Arrays are continuous in memory, and linked lists are not continuous in memory; 3. Array elements are in the stack area, and linked list elements are in the heap area.

Dec 01, 2020 am 09:42 AM

array linked list

What are the commonly used file operations in java?

Byte stream: When reading a byte stream, one byte is returned when a byte is read; mainly used for reading pictures, MP3, and AVI video files. Character stream: The character stream uses a byte stream to read one or more bytes. For example, when reading Chinese, 2 bytes will be read at a time. As long as you are dealing with plain text data, you should give priority to using character streams.

Nov 27, 2020 pm 03:30 PM

java document

What are the methods for downloading network files in java

Java introductory tutorial: This article shares several methods for downloading network files in Java. It has certain reference value and I hope it can help everyone.

Nov 26, 2020 pm 03:47 PM

java

What is the difference between byte stream and character stream in java

The difference between byte stream and character stream in Java is: character stream uses buffer, and byte stream uses bytes for data processing operations.

Nov 25, 2020 pm 03:46 PM

java

What file is jar?

A jar file is an archive file built in zip format with a .jar file extension. It is usually used to aggregate a large number of Java class files, related metadata and resource files into one file in order to develop Java platform application software or libraries.

Nov 25, 2020 pm 02:26 PM

jar document

How many ways does java have to connect to mysql? What are the differences?

Java introductory tutorial: This article introduces five methods of connecting Java to MySQL. It has certain reference value and I hope it can help everyone.

Nov 23, 2020 pm 03:33 PM

java mysql

How to determine whether there is an intersection between two collections in java

This article introduces you to the Java method of determining whether there is an intersection between two collections. It has certain reference value and I hope it can help you.

Nov 20, 2020 pm 03:13 PM

java intersection gather

What are the several ways of map traversal?

There are four ways to traverse the map, namely: 1. Use a for loop to traverse the map; 2. Use iteration to traverse the map; 3. Use keySet to iterate over the map; 4. Use entrySet to traverse the map.

Nov 19, 2020 pm 02:02 PM

map Traverse