Algorithms to Determine Unique Number of Occurrences

  • 时间：2020-09-18 17:39:21
  • 分类：网络文摘
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Given an array of integers arr, write a function that returns true if and only if the number of occurrences of each value in the array is unique. Example 1: Input: arr = [1,2,2,1,1,3] Output: true Explanation: The value 1 has 3 occurrences... ...

Beginner’s Guide to Python’ Enumerate Function

  • 时间：2020-09-18 17:39:21
  • 分类：网络文摘
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python You may see Python code like this: 1 2 for i,v in enumerate(data):   pass for i,v in enumerate(data): pass So, what does the enumerate() function do? The enumerate() in python takes a list as its first parameter, an... ...

Sliding Window to Get Equal Substrings Within MaxCost Budget

  • 时间：2020-09-18 17:39:21
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You are given two strings s and t of the same length. You want to change s to t. Changing the i-th character of s to i-th character of t costs |s[i] – t[i]| that is, the absolute difference between the ASCII values of the characters.... ...

Backpacking Problem Variation via Greedy Approach: How Many Appl

  • 时间：2020-09-18 17:39:21
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You have some apples, where arr[i] is the weight of the i-th apple. You also have a basket that can carry up to 5000 units of weight. Return the maximum number of apples you can put in the basket. Example 1: Input: arr = [100,200,150,1000]... ...

How to Reverse Substrings Between Each Pair of Parentheses using

  • 时间：2020-09-18 17:39:21
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You are given a string s that consists of lower case English letters and brackets. Reverse the strings in each pair of matching parentheses, starting from the innermost one. Your result should not contain any brackets. Example 1: Input: s ... ...

Intersection of Three Sorted Arrays using Three Pointers

  • 时间：2020-09-18 17:39:21
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Given three integer arrays arr1, arr2 and arr3 sorted in strictly increasing order, return a sorted array of only the integers that appeared in all three arrays. Example 1: Input: arr1 = [1,2,3,4,5], arr2 = [1,2,5,7,9], arr3 = [1,3,4,5,8]... ...

Counting the Stepping Numbers between A Range using Depth/Breadt

  • 时间：2020-09-18 17:39:21
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A Stepping Number is an integer such that all of its adjacent digits have an absolute difference of exactly 1. For example, 321 is a Stepping Number while 421 is not. Given two integers low and high, find and return a sorted list of all th... ...

How to Check if Array/List Contains Duplicate Numbers or Strings

  • 时间：2020-09-18 17:39:21
  • 分类：网络文摘
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python In Python, we can check if an array or list contains duplicate items using the following one-liner function. 1 2 def contain_duplicates(list):     return len(set(list)) != len(list) def con... ...

7 Content Marketing Tips for First-Time Bloggers

  • 时间：2020-09-18 17:35:29
  • 分类：网络文摘
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You may have heard of the many ways a well-conceived content marketing strategy can benefit a blog or business by helping you in developing valuable content, establishing yourself as an industry leader and generally improving the connection... ...

The Best Ways to Avoid Distractions whilst Blogging

  • 时间：2020-09-18 17:35:29
  • 分类：网络文摘
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Blogging seems like the dream job, right? After all, you can work from home, you pick your hours, and you’re basically your very own boss! In many ways, it is pretty amazing (um, hello, blogging in bed?!). But sometimes it’s hard to discipl... ...