Step-BY-Step - 博客园

Dungeon Game

摘要： The demons had captured the princess (P) and imprisoned her in the bottom-right corner of a dungeon. The dungeon consists of M x N rooms laid out in a... 阅读全文

posted @ 2015-01-19 13:04 Step-BY-Step 阅读(223) 评论(0) 推荐(0) 编辑

Maximum Gap

摘要： Given an unsorted array, find the maximum difference between the successive elements in its sorted form.Try to solve it in linear time/space.Return 0 ... 阅读全文

posted @ 2015-01-16 16:40 Step-BY-Step 阅读(248) 评论(0) 推荐(0) 编辑

Min Stack

摘要： Design a stack that supports push, pop, top, and retrieving the minimum element in constant time.push(x) -- Push element x onto stack.pop() -- Removes... 阅读全文

posted @ 2015-01-16 16:06 Step-BY-Step 阅读(118) 评论(0) 推荐(0) 编辑

Excel Sheet Column Number

摘要： Related to questionExcel Sheet Column TitleGiven a column title as appear in an Excel sheet, return its corresponding column number.For example: A ... 阅读全文

posted @ 2015-01-16 15:10 Step-BY-Step 阅读(170) 评论(0) 推荐(0) 编辑

Excel Sheet Column Title

摘要： Given a positive integer, return its corresponding column title as appear in an Excel sheet.For example: 1 -> A 2 -> B 3 -> C ... 26 ->... 阅读全文

posted @ 2015-01-16 15:06 Step-BY-Step 阅读(144) 评论(0) 推荐(0) 编辑

Factorial Trailing Zeroes

摘要： Given an integern, return the number of trailing zeroes inn!.Note:Your solution should be in logarithmic time complexity.最初想法是计算里面能被5整除的数字的个数（因为能被2整除的... 阅读全文

posted @ 2015-01-16 15:04 Step-BY-Step 阅读(123) 评论(0) 推荐(0) 编辑

Majority Element

摘要： Given an array of sizen, find the majority element. The majority element is the element that appears more than⌊ n/2 ⌋times.You may assume that the arr... 阅读全文

posted @ 2015-01-15 17:38 Step-BY-Step 阅读(119) 评论(0) 推荐(0) 编辑

Largest Number

摘要： Given a list of non negative integers, arrange them such that they form the largest number.For example, given[3, 30, 34, 5, 9], the largest formed num... 阅读全文

posted @ 2015-01-15 17:18 Step-BY-Step 阅读(122) 评论(0) 推荐(0) 编辑

Fraction to Recurring Decimal

摘要： Given two integers representing the numerator and denominator of a fraction, return the fraction in string format.If the fractional part is repeating,... 阅读全文

posted @ 2015-01-15 16:59 Step-BY-Step 阅读(183) 评论(0) 推荐(0) 编辑

Compare Version Numbers

摘要： Compare two version numbersversion1andversion1.Ifversion1>version2return 1, ifversion1 Integer.valueOf(parts2[i])) return 1;10 if(Integer.... 阅读全文

posted @ 2015-01-15 15:21 Step-BY-Step 阅读(217) 评论(0) 推荐(0) 编辑

yahoo面经第二弹

该文被密码保护。阅读全文

posted @ 2014-11-08 15:58 Step-BY-Step 阅读(2) 评论(0) 推荐(0) 编辑

Maximum Product Subarray

摘要： Find the contiguous subarray within an array (containing at least one number) which has the largest product.For example, given the array[2,3,-2,4],the... 阅读全文

posted @ 2014-10-24 09:40 Step-BY-Step 阅读(114) 评论(0) 推荐(0) 编辑

Find Minimum in Rotated Sorted Array II

摘要： Follow upfor "Find Minimum in Rotated Sorted Array":What ifduplicatesare allowed?Would this affect the run-time complexity? How and why?Suppose a sort... 阅读全文

posted @ 2014-10-23 09:27 Step-BY-Step 阅读(164) 评论(0) 推荐(0) 编辑

Find Minimum in Rotated Sorted Array

摘要： Suppose a sorted array is rotated at some pivot unknown to you beforehand.(i.e.,0 1 2 4 5 6 7might become4 5 6 7 0 1 2).Find the minimum element.You m... 阅读全文

posted @ 2014-10-16 11:23 Step-BY-Step 阅读(162) 评论(0) 推荐(0) 编辑

Set Matrix Zeroes

摘要： Given amxnmatrix, if an element is 0, set its entire row and column to 0. Do it in place.click to show follow up.Follow up:Did you use extra space?A s... 阅读全文

posted @ 2014-09-05 06:39 Step-BY-Step 阅读(160) 评论(0) 推荐(0) 编辑

Remove Duplicates from Sorted List

摘要： Given a sorted linked list, delete all duplicates such that each element appear onlyonce.For example,Given1->1->2, return1->2.Given1->1->2->3->3, retu... 阅读全文

posted @ 2014-09-05 05:29 Step-BY-Step 阅读(128) 评论(0) 推荐(0) 编辑

Remove Duplicates from Sorted List II

摘要： Given a sorted linked list, delete all nodes that have duplicate numbers, leaving onlydistinctnumbers from the original list.For example,Given1->2->3-... 阅读全文

posted @ 2014-09-05 05:27 Step-BY-Step 阅读(130) 评论(0) 推荐(0) 编辑

Edit Distance

摘要： Given two wordsword1andword2, find the minimum number of steps required to convertword1toword2. (each operation is counted as 1 step.)You have the fol... 阅读全文

posted @ 2014-08-29 09:42 Step-BY-Step 阅读(133) 评论(0) 推荐(0) 编辑

Wildcard Matching

摘要： Implement wildcard pattern matching with support for'?'and'*'.'?' Matches any single character.'*' Matches any sequence of characters (including the e... 阅读全文

posted @ 2014-08-19 13:29 Step-BY-Step 阅读(208) 评论(0) 推荐(0) 编辑

Subclasses

摘要： Given a collection of numbers, return all possible subclasses. 1 public class Solution { 2 public List> permute(int[] num) { 3 ArrayList... 阅读全文

posted @ 2014-08-19 09:05 Step-BY-Step 阅读(222) 评论(0) 推荐(0) 编辑

Trapping Rain Water

摘要： Givennnon-negative integers representing an elevation map where the width of each bar is 1, compute how much water it is able to trap after raining.Fo... 阅读全文

posted @ 2014-08-15 09:38 Step-BY-Step 阅读(129) 评论(0) 推荐(0) 编辑

Search Insert Position

摘要： Given a sorted array and a target value, return the index if the target is found. If not, return the index where it would be if it were inserted in or... 阅读全文

posted @ 2014-08-14 09:01 Step-BY-Step 阅读(118) 评论(0) 推荐(0) 编辑

Substring with Concatenation of All Words

摘要： You are given a string,S, and a list of words,L, that are all of the same length. Find all starting indices of substring(s) in S that is a concatenati... 阅读全文

posted @ 2014-08-12 10:48 Step-BY-Step 阅读(139) 评论(0) 推荐(0) 编辑

Swap Nodes in Pairs

摘要： Given a linked list, swap every two adjacent nodes and return its head.For example,Given1->2->3->4, you should return the list as2->1->4->3.Your algor... 阅读全文

posted @ 2014-08-07 09:21 Step-BY-Step 阅读(123) 评论(0) 推荐(0) 编辑

Remove Element

摘要： Given an array and a value, remove all instances of that value in place and return the new length.The order of elements can be changed. It doesn't mat... 阅读全文

posted @ 2014-08-07 08:49 Step-BY-Step 阅读(107) 评论(0) 推荐(0) 编辑

Remove Duplicates from Sorted Array

摘要： Given a sorted array, remove the duplicates in place such that each element appear onlyonceand return the new length.Do not allocate extra space for a... 阅读全文

posted @ 2014-08-07 08:46 Step-BY-Step 阅读(111) 评论(0) 推荐(0) 编辑

Letter Combinations of a Phone Number

摘要： Given a digit string, return all possible letter combinations that the number could represent.A mapping of digit to letters (just like on the telephon... 阅读全文

posted @ 2014-08-06 13:45 Step-BY-Step 阅读(140) 评论(0) 推荐(0) 编辑

Remove Nth Node From End of List

摘要： Given a linked list, remove thenthnode from the end of list and return its head.For example, Given linked list: 1->2->3->4->5, and n = 2. After re... 阅读全文

posted @ 2014-08-06 13:37 Step-BY-Step 阅读(130) 评论(0) 推荐(0) 编辑

Valid Parentheses

摘要： Given a string containing just the characters'(',')','{','}','['and']', determine if the input string is valid.The brackets must close in the correct ... 阅读全文

posted @ 2014-08-06 10:51 Step-BY-Step 阅读(114) 评论(0) 推荐(0) 编辑

Merge k Sorted Lists

摘要： Mergeksorted linked lists and return it as one sorted list. Analyze and describe its complexity.第一遍： 1 public class Solution { 2 public ListNode m... 阅读全文

posted @ 2014-08-06 10:29 Step-BY-Step 阅读(141) 评论(0) 推荐(0) 编辑

Using an Interface as a Type

摘要： When you define a new interface, you are defining a new reference data type. You can use interface names anywhere you can use any other data type name... 阅读全文

posted @ 2014-08-05 13:41 Step-BY-Step 阅读(215) 评论(0) 推荐(0) 编辑

4Sum

摘要： Given an arraySofnintegers, are there elementsa,b,c, anddinSsuch thata+b+c+d= target? Find all unique quadruplets in the array which gives the sum of ... 阅读全文

posted @ 2014-08-05 13:19 Step-BY-Step 阅读(224) 评论(0) 推荐(0) 编辑

Roman to Integer

摘要： Given a roman numeral, convert it to an integer.Input is guaranteed to be within the range from 1 to 3999. 1 public class Solution { 2 public int ... 阅读全文

posted @ 2014-08-05 10:26 Step-BY-Step 阅读(147) 评论(0) 推荐(0) 编辑

3Sum Closest

摘要： Given an arraySofnintegers, find three integers inSsuch that the sum is closest to a given number, target. Return the sum of the three integers. You m... 阅读全文

posted @ 2014-08-05 10:01 Step-BY-Step 阅读(101) 评论(0) 推荐(0) 编辑

Palindrome Number

摘要： Determine whether an integer is a palindrome. Do this without extra space.click to show spoilers.Some hints:Could negative integers be palindromes? (i... 阅读全文

posted @ 2014-08-01 10:42 Step-BY-Step 阅读(123) 评论(0) 推荐(0) 编辑

Median of Two Sorted Arrays

摘要： There are two sorted arrays A and B of size m and n respectively. Find the median of the two sorted arrays. The overall run time complexity should be ... 阅读全文

posted @ 2014-07-31 09:44 Step-BY-Step 阅读(104) 评论(0) 推荐(0) 编辑

Find the smallest number whose digits multiply to a given number n

摘要： Given a number ‘n’, find the smallest number ‘p’ such that if we multiply all digits of ‘p’, we get ‘n’. The result ‘p’ should have minimum two digits... 阅读全文

posted @ 2014-07-16 05:49 Step-BY-Step 阅读(297) 评论(0) 推荐(0) 编辑

A Product Array Puzzle

摘要： Given an array arr[] of n integers, construct a Product Array prod[] (of same size) such that prod[i] is equal to the product of all the elements of a... 阅读全文

posted @ 2014-07-15 07:01 Step-BY-Step 阅读(334) 评论(0) 推荐(0) 编辑

Google NACL 简介

摘要： Back to READMEGetting StartedThis page tells you how to install Native Client and run demos, both in and outside of the browser. On Linux and Mac OS X... 阅读全文

posted @ 2014-06-17 07:49 Step-BY-Step 阅读(679) 评论(0) 推荐(0) 编辑

What does addScalar do?

摘要： The JavaDoc says:SQLQuery org.hibernate.SQLQuery.addScalar(String columnAlias, Type type)Declare a scalar query resultI know whatexecuteScalaris in C#... 阅读全文

posted @ 2014-06-17 02:39 Step-BY-Step 阅读(159) 评论(0) 推荐(0) 编辑

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