原创 Writing a Key Value Store
Writing a Key Value StoreThe purpose of this exercise is to write a basic key value store. It should use string keys an
2020-02-25 03:41:18
原创 N-Queens
N-Queens The n-queens puzzle is the problem of placing n queens on an n×n chessboard such that no two queens att
2020-02-25 03:41:18
原创 summary ranges
Summary Ranges Given a sorted integer array without duplicates, return the summary of its ranges. For example, give
2020-02-25 03:41:18
原创 Scramble String
Scramble String Given a string s1, we may represent it as a binary tree by partitioning it to two non-empty subst
2018-08-31 09:53:15
原创 Find the First Nonrepeated Character
Find the First Nonrepeated Character Write an efficient function to find the first nonrepeated character in a string. F
2018-08-31 09:52:20
原创 Remove Specified Characters
Remove Specified Characters Write an efficient function in JAVA that deletes characters from a string. Use the prototy
2018-08-31 09:52:19
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原创 Lowest Common Ancestor of a Binary Search Tree
Lowest Common Ancestor of a Binary Search Tree Given a binary search tree (BST), find the lowest common
2018-08-31 09:52:01
原创 Integer/String Conversions
Integer/String Conversions Write two conversion routines. The first routine converts a string to a signed integer. You
2018-08-31 09:51:59
原创 Implement Stack Using LinkedList
import java.io.*; import java.util.*; /* * To execute Java, please define "static void main" on a class * named Solu
2018-08-31 09:51:57
原创 Recover Binary Search Tree
Recover Binary Search Tree Two elements of a binary search tree (BST) are swapped by mistake. Recover the t
2018-08-31 09:51:57
原创 Merge Intervals
Given a collection of intervals, merge all overlapping intervals. For example, Given [1,3],[2,6],[8,10],[15,18], retu
2018-08-31 09:51:57
原创 Copy List With Random Pointer
Copy List with Random Pointer A linked list is given such that each node contains an additional random pointer whi
2018-08-31 09:51:57
原创 Reverse Words in a String
Reverse Words in a String Given an input string, reverse the string word by word. For example, Given s = "the sky is
2018-08-31 09:51:57
原创 Read N Characters Given Read4
The API: int read4(char *buf) reads 4 characters at a time from a file. The return value is the actual number of char
2018-08-31 09:51:57
原创 Best Time to Buy and Sell Stock III
Best Time to Buy and Sell Stock III Say you have an array for which the ith element is the price of a given stoc
2018-08-31 09:51:56