Tag：thinking
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Time：2021-10-17
[No.1 statistical special Quad] Problem solving ideasCheck in questions, just enumerate. Code display class Solution { public int countQuadruplets(int[] nums) { int n = nums.length; int res = 0; for (int a = 0; a < n; a++) { for (int b = a + 1; b < n; b++) { for (int c = […]
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Time：2021-10-16
introduce The essence of architecture is to manage complexity. Abstract, layered, divide and conquer and evolutionary thinking are the four most basic weapons for our engineers / architects to deal with and manage complexity. Recently, some newcomers have come to the team, some of whom have some work experience and come in as senior engineers […]
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Time：2021-10-15
[No.1 reverse word prefix] Problem solving ideas Check in question. Code display class Solution { public String reversePrefix(String word, char ch) { int index = word.indexOf(ch); return new StringBuffer(word.substring(0, index + 1)).reverse().toString() + word.substring(index + 1); } } [No.2 number of groups of interchangeable rectangles] Problem solving ideas Classify the rectangles according to the aspect […]
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Time：2021-10-13
Today, I had a sudden feeling that I wanted to realize a different 2048 game. At this time, why would I drive it directly? This does not exist. First of all, I thought of the “world’s largest same-sex dating website”. There are so many ready-made conventional 2048 games on it. I can directly copy one, […]
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Time：2021-10-13
preface Today, I’d like to tell you about the longest dilemma encountered in the interview process, which is also the best embodiment of a candidate’s on-the-spot adaptability, that is, what to do when we can’t answer the questions we encounter in the interview process. misunderstanding Before you start, correct a misunderstanding, that is, for an […]
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Time：2021-10-12
[No.1 variable value after operation] Problem solving ideasCheck in question. Code display class Solution { public int finalValueAfterOperations(String[] operations) { int v = 0; for (String op : operations) { if (op.contains(“++”)) { v++; } else { v–; } } return v; }} [No.2 sum of array values] Problem solving ideasThe beauty value of the […]
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Time：2021-10-11
[maximum difference between No.1 increment elements] Problem solving ideasThe traversal array maintains the global minimum value. If the current value is large, it is a reasonable answer. The traversal process can take the maximum reasonable answer. Code display public class Solution { public int maximumDifference(int[] nums) { if (nums == null || nums.length == 0) […]
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Time：2021-10-5
Quick sort idea: 1. The first number is used as the reference number. Find all the numbers smaller than the reference number and put them on the left, and find all the numbers larger than the reference number and put them on the right 2. Two pointers, one from front to back I and the […]
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Time：2021-10-2
Core idea: Divide the array into sorted and to be sorted parts, and insert an element from to be sorted into the appropriate position of the ordered array until all to be sorted are inserted Take the first element as the sorted array, and compare the following elements with the sorted elements from back to […]
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Time：2021-9-29
Written at the beginning After some time of preparation, the author has recently successfully joined shopee. Therefore, the content has not been updated recently. After stabilizing, the output will continue Write about what you did after you left After joining shopee, the tutor gives an entry task to implement an event mechanism. realizationaddEventListener，removeEventListener，dispatchEventThese three methods. […]
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Time：2021-9-17
1094 the largest generation (25 points) A family hierarchy is usually presented by a pedigree tree where all the nodes on the same level belong to the same generation. Your task is to find the generation with the largest population. Input Specification: Each input file contains one test case. Each case starts with two positive […]
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Time：2021-9-16
Actual project requirements description Get the current environment (production or development) at runtime, and then do different operations Examples of actual project requirements if(__env__) {// do something} else {// do something} Implemented by Rollup Train of thought description: To realize the above requirements, we must find an “entry” that can distinguish the environment. Here we […]
