归档 2016年9月18日

LeetCode Weekly Contest 5是LeetCode举办的第四场正式周赛，共4道题目，比赛时长2.5小时。

比赛链接：https://leetcode.com/contest/leetcode-weekly-contest-5/

题解列表：

LeetCode 400. Nth Digit

LeetCode 401. Binary Watch

LeetCode 402. Remove K Digits

LeetCode 403. Frog Jump

题目描述：

LeetCode 403. Frog Jump

A frog is crossing a river. The river is divided into x units and at each unit there may or may not exist a stone. The frog can jump on a stone, but it must ...

题目描述：

LeetCode 402. Remove K Digits

Given a non-negative integer num represented as a string, remove k digits from the number so that the new number is the smallest possible.

Note:

• The length of num is less than 10^{5 ...}

题目描述：

LeetCode 401. Binary Watch

A binary watch has 4 LEDs on the top which represent the hours (0-11), and the 6 LEDs on the bottom represent the minutes (0-59).

Each LED represents a zero or one, with the least ...

题目描述：

LeetCode 400. Nth Digit

Find the n^th digit of the infinite integer sequence 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, ...

Note:
n is positive and will fit within the range of a 32-bit signed ...