php2分查找法
php二分查找法
?
?function bin_sch($array,$low,$heigh,$k){
??if($low ???$mid = intval(($low + $heigh)/2);
???
???if($array[$mid] == $k){
????return true;
???}else if($k ????return bin_sch($array, $low, $mid-1, $k);
???}else {
????return bin_sch($array, $mid+1, $heigh, $k);
???}
??}
?}
?>
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Detailed explanation of the usage of return in C language
Oct 07, 2023 am 10:58 AM
The usage of return in C language is: 1. For functions whose return value type is void, you can use the return statement to end the execution of the function early; 2. For functions whose return value type is not void, the function of the return statement is to end the execution of the function. The result is returned to the caller; 3. End the execution of the function early. Inside the function, we can use the return statement to end the execution of the function early, even if the function does not return a value.
How to use mid function
Aug 09, 2023 am 11:08 AM
The mid function is used to intercept a substring of a specified length from a string. The specific method is: 1. The mid function in VB, the syntax is "Mid(string, start[, length])"; 2. The mid function in JavaScript, Syntax "string.slice(startIndex[, endIndex])"; 3. Mid function in Python, syntax "string[startIndex:endIndex]".
What is the execution order of return and finally statements in Java?
Apr 25, 2023 pm 07:55 PM
Source code: publicclassReturnFinallyDemo{publicstaticvoidmain(String[]args){System.out.println(case1());}publicstaticintcase1(){intx;try{x=1;returnx;}finally{x=3;}}}#Output The output of the above code can simply conclude: return is executed before finally. Let's take a look at what happens at the bytecode level. The following intercepts part of the bytecode of the case1 method, and compares the source code to annotate the meaning of each instruction in
Sort array using Array.Sort function in C#
Nov 18, 2023 am 10:37 AM
Title: Example of using the Array.Sort function to sort an array in C# Text: In C#, array is a commonly used data structure, and it is often necessary to sort the array. C# provides the Array class, which has the Sort method to conveniently sort arrays. This article will demonstrate how to use the Array.Sort function in C# to sort an array and provide specific code examples. First, we need to understand the basic usage of the Array.Sort function. Array.So
Simple and clear method to use PHP array_merge_recursive() function
Jun 27, 2023 pm 01:48 PM
When programming in PHP, we often need to merge arrays. PHP provides the array_merge() function to complete array merging, but when the same key exists in the array, this function will overwrite the original value. In order to solve this problem, PHP also provides an array_merge_recursive() function in the language, which can merge arrays and retain the values of the same keys, making the program design more flexible. array_merge
How to use the array_combine function in PHP to combine two arrays into an associative array
Jun 26, 2023 pm 01:41 PM
In PHP, there are many powerful array functions that can make array operations more convenient and faster. When we need to combine two arrays into an associative array, we can use PHP's array_combine function to achieve this operation. This function is actually used to combine the keys of one array as the values of another array into a new associative array. Next, we will explain how to use the array_combine function in PHP to combine two arrays into an associative array. Learn about array_comb
How does Vue3 use setup syntax sugar to refuse to write return
May 12, 2023 pm 06:34 PM
Vue3.2 setup syntax sugar is a compile-time syntax sugar that uses the combined API in a single file component (SFC) to solve the cumbersome setup in Vue3.0. The declared variables, functions, and content introduced by import are exposed through return, so that they can be used in Vue3.0. Problems in use 1. There is no need to return declared variables, functions and content introduced by import during use. You can use syntactic sugar //import the content introduced import{getToday}from'./utils'//variable constmsg='Hello !'//function func
Use the return keyword in JavaScript
Feb 18, 2024 pm 12:45 PM
Usage of return in JavaScript requires specific code examples In JavaScript, the return statement is used to specify the value returned from a function. Not only can it be used to end the execution of a function, it can also return a value to the place where the function was called. The return statement has the following common uses: Return a value The return statement can be used to return a value to the place where the function is called. Here is a simple example: functionadd(a,b){
