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每日一道编程题

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全部文章 / 每日一道编程题（共57篇）

17 Unique Morse Code Words

关注每天一道编程题专栏，一起学习进步。题目 International Morse Code defines a standard encoding where each letter is mapped to a series of dots and dashes, as follo...

2020-02-06

0 487

16 Remove Outermost Parentheses

关注每天一道编程题专栏，一起学习进步。题目 A valid parentheses string is either empty (""), “(” + A + “)”, or A + B, where A and B are valid parentheses s...

2020-02-05

0 560

15 Find N Unique Integers Sum up to Zero

关注每天一道编程题专栏，一起学习进步。题目 Given an integer n, return any array containing n unique integers such that they add up to 0. Example 1: Input: n = 5 O...

2020-02-04

0 522

14 Decrypt String from Alphabet to Integer Mapping

关注每天一道编程题专栏，一起学习进步。题目 Given a string s formed by digits (‘0’ - ‘9’) and ‘#’ . We want to map s to English lowercase characters as follows: Cha...

2020-02-03

0 434

13 Cells with Odd Values in a Matrix

关注每天一道编程题专栏，一起学习进步。题目 Given n and m which are the dimensions of a matrix initialized by zeros and given an array indices where indices[i] = [ri...

2020-02-02

0 514

12 Range Sum of BST

关注每天一道编程题专栏，一起学习进步。题目 Given the root node of a binary search tree, return the sum of values of all nodes with value between L and R (inclusive)...

2020-02-01

0 534

11 To lower case

关注每天一道编程题专栏，一起学习进步。题目 Implement function ToLowerCase() that has a string parameter str, and returns the same string in lowercase. Example 1: ...

2020-01-31

0 492

10 Minimum Time Visiting All Points

关注每天一道编程题专栏，一起学习进步。题目 On a plane there are n points with integer coordinates points[i] = [xi, yi]. Your task is to find the minimum time in sec...

2020-01-27

0 456

09 Convert Binary Number in a Linked List to Integer

关注每天一道编程题专栏，一起学习进步。题目 Given head which is a reference node to a singly-linked list. The value of each node in the linked list is either 0 or 1....

2020-01-24

0 593

08 Split a String in Balanced Strings

关注每天一道编程题专栏，一起学习进步。题目 Balanced strings are those who have equal quantity of ‘L’ and ‘R’ characters. Given a balanced string s split it in the ...

2020-01-23

0 559