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Summary of PHP algorithm exercise series (continuously updated~)

藏色散人
藏色散人Original
2021-08-16 17:59:224108browse

During this period, I have written a lot of articles about the PHP basic algorithm exercise series. I believe it will be more or less helpful to everyone. I also believe that everyone can learn certain PHP algorithm tips, so I will summarize this article for you. All previous articles in the algorithm series are welcome to collect, share and learn!

Note: This article will continue to be updated~

The PHP algorithm practice series articles are summarized as follows:

1: "PHP Algorithm Exercise 1: Calculate the sum of two numbers and three times the sum"

2: "PHP Algorithm Exercise 2: Find n and the specified number The absolute difference

三:《PHP Algorithm Exercise Three: Swap the first and last characters in the string

四:《PHP Algorithm Exercise 4: Multiply the corresponding elements of two given lists

5:《PHP Algorithm Exercise 5: Determine whether a number is a multiple of a specified number

Six:《PHP Algorithm Exercise Six: Determine whether a value appears three times in an array in succession

Seven:《PHP Algorithm Exercise Seven: Implementation How to judge geometric sequence

Eight:《PHP Algorithm Exercise Eight: Determine whether the given three numbers can form a right triangle

Nine : "PHP Algorithm Exercise 9: Convert all even numbers to all odd numbers"

10: "PHP Algorithm Exercise 10: Calculate the radius and center coordinates of a circle"

Eleven: "PHP Algorithm Exercise Eleven: Check whether two given integers are within the specified range"

Twelve:"PHP Algorithm Exercise Twelve: Obtain the absolute value between n and 51 and return the value as required

Thirteen:《PHP Algorithm Exercise Thirteen: Determine the ones digit of multiple non-negative integers Are the values ​​​​the same

The series of articles on algorithm exercises that have been written so far are all here. I will update them when there are new articles!

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  • The program contains algorithms, and algorithms are the soul of the program. A program that needs to implement specific functions can have many kinds of algorithms to implement it, so the algorithm The quality determines the quality of the program. The quality of an algorithm will affect the efficiency of the algorithm and even the program.

  • Algorithms and programs are both finite sequences of instructions, but a program is an algorithm, and an algorithm is not necessarily a program. Program = data structure algorithm. The main purpose of an algorithm is to provide humans with a readable understanding of the workflow and steps performed. Data structures and algorithms must be implemented through programs before they can be executed by the computer system. It can be understood that data structures and algorithms form executable programs.

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