In many projects, configuration files are indispensable. Typically, configuration files are set with variables or arrays, such as databases, or some public parameters. Create {code... } configuration file {code... } how to read? {code... } Author: tankingdatel2021-04-25wechat :sansure2016Web:[link]

// The first way {code... } // Call this.removalrepeat (res.result.list,'id')// The second {code... }

Leetcode-525 - sequential array <; ! --more--> [Title Description] {Code... } [title link] leetcode topic link address [making] code/ideas introduced ideas one: violence method (this approach doesn't make sense, iterate through all the subarray) time complexity (O (n ^ 2 ^)) idea 2: Since there are only two elements in the hash array (0, 1), when the length of the children is n (n/2), the sum of the children in the hash array is (n/2).

1. The JavaScript sort() method is the most commonly used and fastest method! ArraySort () : ArraySort () : ArraySort () : ArraySort () : ArraySort () : ArraySort () : ArraySort () : ArraySort () : ArraySort () : ArraySort () : ArraySort () The SORT method cannot handle sorting of more than 10 numbers without passing an argument (it defaults to sorting by the first character of each item, not what we want).

Given a non-negative integer represented by a non-empty array of integers, add one to the number. The highest digit is stored at the top of the array, where each element stores a single digit. You can assume that the integer does not begin with zero, except for the integer 0. See the LeetCode website for an example. The copyright belongs to Lankou Network. Commercial reprint please contact the official authorization, non...

Return the new length of the array after deleting each element only once. Return the new length of the array after deleting the element. Instead of using extra array space, you must modify the input array in place and do so using O(1) extra space. See the LeetCode website for an example. The copyright belongs to Lankou Network. Commercial reprint please contact officer...

Linear table: logical structure, is the relationship between external exposure data, do not care about how to achieve the bottom layer, the logic structure of data structure classification is linear structure and nonlinear structure and sequence table, linked list is a linear table.

Given a sorted array and a target value, find the target value in the array and return its index. If the target value does not exist in the array, returns the position at which it will be inserted in order. You can assume that there are no duplicate elements in the array. See the LeetCode website for an example. The copyright belongs to Lankou Network. Commercial reprint please contact the official authorization, non-commercial reprint please indicate the source.

Abstract: Usually practice algorithm problem learning algorithm knowledge, often found in the solution written "dynamic programming", which is a complex DP formula, for new people in addition to say "wonderful ah", the rest is confused, how did he think of this formula? Can I imagine? Does this work?

Given an array nums and a value val, you need to remove all elements in place that have a value equal to val, and return the new length of the removed array. Do not use extra array space, you must only use O(1) extra space and modify the input array in place. The order of the elements can be changed. You don't have to worry about the elements in the array after the new length. See the LeetCode website for an example. Source: LeetCode Link: [...