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For Web programming, the most important thing is to access and read and write data. There may be many ways to store them, such as strings, arrays, files, and so on. arrays, which can be said to be a more important way of using PHP data. PHP's Array
The topic comes from the "point of the sword" in the face question 3: find the duplicate number in the Array.Title: all numbers in an array of length n are within the range of 0 to n-1. Some of the numbers in the array are duplicates, but I don't
Title: All numbers in an array of length n are within the range of 0 to n-1. Some of the numbers in the array are duplicates, but it is not known that several numbers have been duplicated, and the number of repetitions of each number is unknown.
1. TitleContains Duplicate (determine if there are duplicate elements in the array)2. Address of the topichttps://leetcode.com/problems/contains-duplicate/3. Topic contentEnglish: Given An array of integers, find if the array contains any duplicates.
1. TitleContains Duplicate II (Judging if there is a repeating element in the array 2)2. Address of the topichttps://leetcode.com/problems/contains-duplicate-ii/3. Topic contentEnglish: Given An array of integers and a integer K, find out whether
arrays, which can be said to be a more important way of data application in PHP. PHP array functions are numerous, the following is my study of the summary, take this to remember, easy to learn later. 1. Array definitions The definition of an array
/** Problem: Find duplicate elements in 101 data* Topics are as follows: existing 0 to 99, total 100 integers, each different, put all the numbers into an array, randomly arranged.* Array length 101, extra number is 0 to 99 any number (unique
arrays, which can be said to be a more important way of using PHP data. PHP's Array function is numerous, below is my study summary, takes this to remember, facilitates later to learn. 1. Array definition The definition of an array is defined using
basic functions of array manipulationThe key name and value of the arrayArray_values ($arr); Gets the value of the array Array_keys ($arr), gets the key name of the array array_flip ($arr), and the values in the array are exchanged with the key
Leetcode has four questions about removing repeated numbers from an ordered sequence. Two of them are arrays and two are linked lists: (1) remove duplicates from sorted array I: removes repeated numbers from an ordered array and returns the size of