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Month: February 2020

  • Home
  • 2020
  • February

3Sum – #15 LeetCode

By Bill0412Posted on February 21, 2020July 8, 2020
  • LeetCode

Description Given an array nums of n integers, are there elements a, b, c in nums such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Note: The solution […]

3Sum – #15 LeetCode Read More

Longest Common Prefix – #14 LeetCode

By Bill0412Posted on February 18, 2020February 18, 2020
  • LeetCode

Description Write a function to find the longest common prefix string amongst an array of strings. If there is no common prefix, return an empty […]

Longest Common Prefix – #14 LeetCode Read More

Roman to Integer – #13 LeetCode

By Bill0412Posted on February 18, 2020
  • LeetCode

Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 For […]

Roman to Integer – #13 LeetCode Read More

Integer to Roman – #12 LeetCode

By Bill0412Posted on February 17, 2020February 17, 2020
  • LeetCode

Description Roman numerals are represented by seven different symbols: I, V, X, L, C, D and M. Symbol Value I 1 V 5 X 10 L 50 C 100 D 500 M 1000 […]

Integer to Roman – #12 LeetCode Read More

Container With Most Water – #11 LeetCode

By Bill0412Posted on February 14, 2020February 14, 2020
  • LeetCode

Description Given n non-negative integers a1, a2, …, an , where each represents a point at coordinate (i, ai). n vertical lines are drawn such that the two endpoints of line i is at (i, ai) and […]

Container With Most Water – #11 LeetCode Read More

Regular Expression Matching – #10 LeetCode

By Bill0412Posted on February 9, 2020February 9, 2020
  • LeetCode

Description Given an input string (s) and a pattern (p), implement regular expression matching with support for ‘.’ and ‘*’. ‘.’ Matches any single character. ‘*’ Matches zero […]

Regular Expression Matching – #10 LeetCode Read More

Palindrome Number – #9 LeetCode

By Bill0412Posted on February 7, 2020
  • LeetCode

Description Determine whether an integer is a palindrome. An integer is a palindrome when it reads the same backward as forward. Example 1: Input: 121 Output: true Example 2: […]

Palindrome Number – #9 LeetCode Read More

String to Integer (atoi) – #8 LeetCode

By Bill0412Posted on February 7, 2020February 7, 2020
  • LeetCode

Description Implement atoi which converts a string to an integer. The function first discards as many whitespace characters as necessary until the first non-whitespace character is found. Then, […]

String to Integer (atoi) – #8 LeetCode Read More

Install and Plot with PixieDust – Jupyter Notebook Ubuntu 18.04 Server

By Bill0412Posted on February 7, 2020February 7, 2020
  • Machine Learning

PixieDust is a Python library for use in Jupyter notebooks. Using PixieDust is cool, but it is only supported by IBM Watson Studio and the […]

Install and Plot with PixieDust – Jupyter Notebook Ubuntu 18.04 Server Read More

Reverse Integer – #7 LeetCode

By Bill0412Posted on February 6, 2020February 6, 2020
  • LeetCode

Description Given a 32-bit signed integer, reverse digits of an integer. Example 1: Input: 123 Output: 321 Example 2: Input: -123 Output: -321 Example 3: […]

Reverse Integer – #7 LeetCode Read More

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