46 - 每日算法题 Full Binary Tree - full-binary-tree.txt

Hi, here's your problem today. This problem was recently asked by Google:

Given a binary tree, remove the nodes in which there is only 1 child, so that the binary tree is a full binary tree.

So leaf nodes with no children should be kept, and nodes with 2 children should be kept as well.
...
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47 - 每日算法题 Min Stack - min-stack.txt

Hi, here's your problem today. This problem was recently asked by Uber:

Design a simple stack that supports push, pop, top, and retrieving the minimum element in constant time.

push(x) -- Push element x onto stack.
...
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Top | 类别: 计算机科学 | 评论 (0) | 标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 1101 次阅读, 16463 次搜索 | 137 个单词

48 - 每日算法题 Reverse Integer - reverse-integer.txt

Hi, here's your problem today. This problem was recently asked by LinkedIn:

Write a function that reverses the digits a 32-bit signed integer, x. Assume that the environment can only store integers within the 32-bit signed integer range, [-2^31, 2^31 - 1]. The function returns 0 when the reversed integer overflows.

Example:
...
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49 - 每日算法题 Min Range Needed to Sort - min-range-needed-to-sort.txt

Hi, here's your problem today. This problem was recently asked by Twitter:

Given a list of integers, return the bounds of the minimum range that must be sorted so that the whole list would be sorted.

Example:
...
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Top | 类别: 计算机科学 | 评论 (0) | 标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 407 次阅读, 17281 次搜索 | 70 个单词

50 - 每日算法题 Distribute Bonuses - distribute-bonuses.txt

Hi, here's your problem today. This problem was recently asked by Twitter:

You are the manager of a number of employees who all sit in a row. The CEO would like to give bonuses to all of your employees, but since the company did not perform so well this year the CEO would like to keep the bonuses to a minimum.

The rules of giving bonuses is that:
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51 - 每日算法题 Tree Serialization - tree-serialization.txt

Hi, here's your problem today. This problem was recently asked by Apple:

You are given the root of a binary tree. You need to implement 2 functions:

1. serialize(root) which serializes the tree into a string representation
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Top | 类别: 计算机科学 | 评论 (0) | 标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 433 次阅读, 16939 次搜索 | 171 个单词

52 - 每日算法题 Arithmetic Binary Tree - arithmetic-binary-tree.txt

Hi, here's your problem today. This problem was recently asked by Apple:

You are given a binary tree representation of an arithmetic expression. In this tree, each leaf is an integer value,, and a non-leaf node is one of the four operations: '+', '-', '*', or '/'.

Write a function that takes this tree and evaluates the expression.
...
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53 - 每日算法题 Angles of a Clock - -angles-of-a-clock.txt.txt

Hi, here's your problem today. This problem was recently asked by Microsoft:

Given a time in the format of hour and minute, calculate the angle of the hour and minute hand on a clock.

...
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Top | 类别: 计算机科学 | 评论 (0) | 标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python,  | 英文 | 385 次阅读, 17913 次搜索 | 49 个单词

54 - 每日算法题 Longest Increasing Subsequence - longest-increasing-subsequence.txt.txt

Hi, here's your problem today. This problem was recently asked by Microsoft:

You are given an array of integers. Return the length of the longest increasing subsequence (not necessarily contiguous) in the array.

Example:
...
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Top | 类别: 计算机科学 | 评论 (0) | 标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 268 次阅读, 17790 次搜索 | 45 个单词

55 - 每日算法题: Given two arrays, write a function to compute their intersection. - given-two-arrays,-write-a-function-to-compute-their-intersection.txt.txt

Hi, here's your problem today. This problem was recently asked by Amazon:

Given two arrays, write a function to compute their intersection - the intersection means the numbers that are in both arrays.

Example 1:
...
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Top | 类别: 计算机科学 | 评论 (0) | 标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 204 次阅读, 20142 次搜索 | 80 个单词

56 - 每日算法题: Product of Array Except Self - product-of-array-except-self.txt.txt

Hi, here's your problem today. This problem was recently asked by Amazon:

You are given an array of integers. Return an array of the same size where the element at each index is the product of all the elements in the original array except for the element at that index.

For example, an input of [1, 2, 3, 4, 5] should return [120, 60, 40, 30, 24].
...
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57 - 每日算法题: Merge List Of Number Into Ranges - merge-list-of-number-into-ranges.txt.txt

Hi, here's your problem today. This problem was recently asked by Facebook:

Given a sorted list of numbers, return a list of strings that represent all of the consecutive numbers.

Example:
...
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Top | 类别: 计算机科学 | 评论 (0) | 标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 244 次阅读, 22418 次搜索 | 98 个单词

58 - 每日算法题: Reverse Words in a String - reverse-words-in-a-string.txt.txt

Hi, here's your problem today. This problem was recently asked by Facebook:

Given a string, you need to reverse the order of characters in each word within a sentence while still preserving whitespace and initial word order.

Example 1:
...
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59 - 每日算法题: Room scheduling - room-scheduling.txt.txt

Hi, here's your problem today. This problem was recently asked by Google:

You are given an array of tuples (start, end) representing time intervals for lectures. The intervals may be overlapping. Return the number of rooms that are required.

For example. [(30, 75), (0, 50), (60, 150)] should return 2.
Top | 类别: 计算机科学 | 评论 (0) | 标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 423 次阅读, 17731 次搜索 | 43 个单词

60 - 每日算法题: Running Median - running-median.txt.txt

Hi, here's your problem today. This problem was recently asked by Google:

You are given a stream of numbers. Compute the median for each new element .

Eg. Given [2, 1, 4, 7, 2, 0, 5], the algorithm should output [2, 1.5, 2, 3.0, 2, 2, 2]
...
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Top | 类别: 计算机科学 | 评论 (0) | 标签: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | 英文 | 440 次阅读, 17493 次搜索 | 49 个单词