原创 Random Number Series Questions
This webpage gives a perfect solution to generate K random numbers from given N size array: http://www.geeksforgeeks.or
2020-06-23 05:10:25
原创 LeetCode 356. Line Reflection
very straight forward. #include <vector> #include <iostream> using namespace std; /* Given n points on a 2D plane an
2020-06-23 05:10:25
原创 LeetCode 360. Sort Transformed Array
/* Given a sorted array of integers nums and integer values a, b and c. Apply a function of the form f(x) = ax^2 +
2020-06-23 05:10:25
原创 Print Boundry Nodes of a binary tree.
void printLeaves(TreeNode* root) { if(root) { printLeaves(root->left); if(!(root->left) && !(root->right)) co
2020-06-23 05:10:25
原创 LeetCode 346. Moving Average from Data Stream
Given a stream of integers and a window size, calculate the moving average of all integers in the sliding window. F
2020-06-23 05:10:25
原创 Next Larger Value in BST
This question need some clarification of the TreeNode structure. Suppose the given TreeNode struct is as following: St
2020-06-23 05:10:25
原创 K consecutive maxSum
// given an array, find n consecutive number which forms the largest sum. #include "header.h" using namespace std; int
2020-06-23 05:10:25
原创 Permute the array according to the given permutation.
Some one posted this interview question asked by Google. #include <vector> #include <string> #include <iostream> using
2020-06-23 05:10:25
原创 LeetCode 366. Find Leaves of Binary Tree
Given a binary tree, find all leaves and then remove those leaves. Then repeat the previous steps until the tree is em
2020-06-10 09:06:43
原创 Find Closet Pairs -- To be continue
Sweep line algorithm: a vertical line that is conceptually "swept" across the plane. To better understand this algorith
2020-06-10 09:06:43
原创 Dynamic Programming series
DP is absolutely the best way to category levels of programming..... and it is always the favourite questions being ask
2020-06-10 09:06:43
原创 Sort Stack in increasing/decreasing Order.
Question: Sort a stack in increasing order. Two ways: sort it recursively and use an explicit stack. // solve it recurs
2020-06-10 09:06:43
原创 LeetCode 241. Different Ways to Add Parentheses
Given a string of numbers and operators, return all possible results from computing all the different possible ways
2020-02-24 05:44:51
原创 K sum
This is an extended question for 2 sum and 3 sum, 4 sum, DP problem. Given n distinct positive integers, integer k (k
2020-02-24 05:44:51
原创 Majority Element III
#include <iostream> #include <vector> #include <unordered_map> using namespace std; /* Given an array of integers an
2020-02-24 05:44:51