105 - Find Missing Numbers in an Array - find-missing-numbers-in-an-array.txt

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

Given an array of integers of size n, where all elements are between 1 and n inclusive, find all of the elements of [1, n] that do not appear in the array. Some numbers may appear more than once.

Example:
...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 66419 Views, 33716 Search Bots | 84 Words

106 - Binary Tree Level with Minimum Sum - binary-tree-level-with-minimum-sum.txt

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

You are given the root of a binary tree. Find the level for the binary tree with the minimum sum, and return that value.

For instance, in the example below, the sums of the trees are 10, 2 + 8 = 10, and 4 + 1 + 2 = 7. So, the answer here should be 7.
...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 69039 Views, 34134 Search Bots | 111 Words

107 - Algorithm Interview: Lowest Common Ancestor of 2 Nodes in Binary Tree - lowest-common-ancestor-of-2-nodes-in-binary-tree.txt

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

You are given the root of a binary tree, along with two nodes, A and B. Find and return the lowest common ancestor of A and B. For this problem, you can assume that each node also has a pointer to its parent, along with its left and right child.

...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python,  | English | 76430 Views, 42080 Search Bots | 147 Words

108 - Algorithm Interview: Shifted String - shifted-string.txt

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

You are given two strings, A and B. Return whether A can be shifted some number of times to get B.

Eg. A = abcde, B = cdeab should return true because A can be shifted 3 times to the right to get B. A = abc and B= acb should return false.
...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 76218 Views, 30249 Search Bots | 79 Words

109 - Algorithm Interview: Level Order Traversal of Binary Tree - level-order-traversal-of-binary-tree.txt

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

Given the root of a binary tree, print its level-order traversal. For example:

...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python,  | English | 75972 Views, 42278 Search Bots | 73 Words

110 - Algorithm Interview: Determine If Linked List is Palindrome - determine-if-linked-list-is-palindrome.txt

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

You are given a doubly linked list. Determine if it is a palindrome.

Can you do this for a singly linked list?
...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 74211 Views, 41457 Search Bots | 102 Words

111 - Algorithm Interview: Subarray With Target Sum - subarray-with-target-sum.txt

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

You are given an array of integers, and an integer K. Return the subarray which sums to K. You can assume that a solution will always exist.

...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python,  | English | 74825 Views, 35456 Search Bots | 63 Words

112 - Algorithm Interview: Longest Consecutive Sequence - longest-consecutive-sequence.txt

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

You are given an array of integers. Return the length of the longest consecutive elements sequence in the array.

For example, the input array [100, 4, 200, 1, 3, 2] has the longest consecutive sequence 1, 2, 3, 4, and thus, you should return its length, 4.
...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 74381 Views, 35959 Search Bots | 69 Words

113 - Algorithm Interview: Permutations of numbers - permutations-of-numbers.txt

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

You are given an array of integers. Return all the permutations of this array.

...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python,  | English | 76328 Views, 37458 Search Bots | 38 Words

114 - Algorithm Interview: Maximum Path Sum in Binary Tree - maximum-path-sum-in-binary-tree.txt

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

You are given the root of a binary tree. Find the path between 2 nodes that maximizes the sum of all the nodes in the path, and return the sum. The path does not necessarily need to go through the root.

...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python,  | English | 74682 Views, 46566 Search Bots | 116 Words

115 - Algorithm Interview: Smallest Number that is not a Sum of a Subset of List - smallest-number-that-is-not-a-sum-of-a-subset-of-list.txt

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

Given a sorted list of positive numbers, find the smallest positive number that cannot be a sum of any subset in the list.

Example:
...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 72382 Views, 99751 Search Bots | 66 Words

116 - Algorithm Interview: Make the Largest Number - make-the-largest-number.txt

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

Given a number of integers, combine them so it would create the largest number.

Example:
...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 72887 Views, 35649 Search Bots | 41 Words

117 - Algorithm Interview: No Adjacent Repeating Characters - no-adjacent-repeating-characters.txt

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

Given a string, rearrange the string so that no character next to each other are the same. If no such arrangement is possible, then return None.

Example:
...
Full Text>>

Top | Category: Computing | Comments (0) | Tags: 每日算法题, 算法, 数据结构, 面试题, Daily Interview Problem, Data Structures and Algorithms, Computer Programming, Python, | English | 74065 Views, 29507 Search Bots | 57 Words