500面试题.zip_面试进阶_其他下载-pudn.com

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<div id="pf2" class="pf w0 h0" data-page-no="2"><div class="pc pc2 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622ba8de3d2fbb00078e85c8/bg2.jpg"><div class="t m0 x3 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x4 h4 yd ff2 fs3 fc1 sc0 ls0 ws0">目录 </div><div class="t m0 x3 h5 ye ff1 fs0 fc0 sc0 ls0 ws0"> 第一篇 面试题 ................................................................................ 8 </div><div class="t m0 x5 h6 yf ff6 fs4 fc0 sc0 ls0 ws0">1.1. </div><div class="t m0 x6 h5 y10 ff2 fs4 fc0 sc0 ls5 ws0">简介</div><div class="t m0 x7 h6 yf ff6 fs4 fc0 sc0 ls0 ws0"> ............................................................................................................... 8 </div><div class="t m0 x8 h5 y11 ff6 fs4 fc0 sc0 ls0 ws0">1.2. 面试题集合（一） .......................................................................................... 8 </div><div class="t m0 x9 h5 y12 ff6 fs4 fc0 sc0 ls0 ws0">1.2.1. 把二元查找树转变成排序的双向链表.................................................... 8 </div><div class="t m0 x9 h5 y13 ff6 fs4 fc0 sc0 ls0 ws0">1.2.2. 下排每个数都是先前上排那十个数在下排出现的次数 ..........................11 </div><div class="t m0 x9 h5 y14 ff6 fs4 fc0 sc0 ls0 ws0">1.2.3. 设计包含 min 函数的栈 ...................................................................... 14 </div><div class="t m0 x9 h5 y15 ff6 fs4 fc0 sc0 ls0 ws0">1.2.4. 求子数组的最大和.............................................................................. 20 </div><div class="t m0 x9 h5 y16 ff6 fs4 fc0 sc0 ls0 ws0">1.2.5. 在二元树中找出和为某一值的所有路径 .............................................. 22 </div><div class="t m0 x3 h5 y17 ff1 fs0 fc0 sc0 ls0 ws0"> 1.2.6. Top K 算法详细解析---百度面试 ......................................................... 29 </div><div class="t m0 x9 h5 y18 ff6 fs4 fc0 sc0 ls0 ws0">1.2.7. 翻转句子中单词的顺序....................................................................... 31 </div><div class="t m0 x9 h5 y19 ff6 fs4 fc0 sc0 ls0 ws0">1.2.8. 判断整数序列是不是二元查找树的后序遍历结果 ................................ 33 </div><div class="t m0 x9 h5 y1a ff6 fs4 fc0 sc0 ls0 ws0">1.2.9. 查找最小的 K 个元素-使用最大堆....................................................... 35 </div><div class="t m0 x9 h5 y1b ff6 fs4 fc0 sc0 ls0 ws0">1.2.10. 求二叉树中节点的最大距离................................................................ 37 </div><div class="t m0 x8 h5 y1c ff6 fs4 fc0 sc0 ls0 ws0">1.3. 面试题集合（二） ........................................................................................ 40 </div><div class="t m0 x9 h6 y1d ff6 fs4 fc0 sc0 ls0 ws0">1.3.1. </div><div class="t m0 xa h5 y1e ff2 fs4 fc0 sc0 ls0 ws0">求 </div><div class="t m0 xb h6 y1d ff6 fs4 fc0 sc0 ls0 ws0">1+2+…+n....................................................................................... 40 </div><div class="t m0 x9 h5 y1f ff6 fs4 fc0 sc0 ls0 ws0">1.3.2. 输入一个单向链表，输出该链表中倒数第 k 个结点............................. 44 </div><div class="t m0 x9 h5 y20 ff6 fs4 fc0 sc0 ls0 ws0">1.3.3. 输入一个已经按升序排序过的数组和一个数字.................................... 46 </div><div class="t m0 x9 h5 y21 ff6 fs4 fc0 sc0 ls0 ws0">1.3.4. 输入一颗二元查找树，将该树转换为它的镜像.................................... 48 </div><div class="t m0 x9 h5 y22 ff6 fs4 fc0 sc0 ls0 ws0">1.3.5. 输入一颗二元树，从上往下按层打印树的每个结点，同一层中按照从左往 </div><div class="t m0 x9 h5 y23 ff2 fs4 fc0 sc0 ls5 ws0">右的顺序打印................................................................................................... 49 </div><div class="t m0 x9 h5 y24 ff6 fs4 fc0 sc0 ls0 ws0">1.3.6. 在一个字符串中找到第一个只出现一次的字符。如输入 abaccdeff，则输出 b </div><div class="t m0 xc h6 y25 ff6 fs4 fc0 sc0 ls0 ws0">52 </div><div class="t m0 x3 h5 y26 ff1 fs0 fc0 sc0 ls0 ws0"> 1.3.7. n 个数字（0,1,…,n-1）形成一个圆圈 .................................................. 53 </div></div><div class="pi" data-data='{"ctm":[1.611161,0.000000,0.000000,1.611161,0.000000,0.000000]}'></div></div>

<div id="pf3" class="pf w0 h0" data-page-no="3"><div class="pc pc3 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622ba8de3d2fbb00078e85c8/bg3.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 xc h6 y27 ff6 fs4 fc0 sc0 ls0 ws0">1.3.8. </div><div class="t m0 xd h5 y28 ff2 fs4 fc0 sc0 ls5 ws0">定义 </div><div class="t m0 xe h6 y27 ff6 fs4 fc0 sc0 ls0 ws0">Fibonacci </div><div class="t m0 xf h5 y28 ff2 fs4 fc0 sc0 ls5 ws0">数列</div><div class="t m0 x10 h6 y27 ff6 fs4 fc0 sc0 ls0 ws0"> ............................................................................ 58 </div><div class="t m0 xc h5 y29 ff6 fs4 fc0 sc0 ls0 ws0">1.3.9. 左移递减数列查找某一个数................................................................ 60 </div><div class="t m0 xc h5 y2a ff6 fs4 fc0 sc0 ls0 ws0">1.3.10. 对于一个整数矩阵，存在一种运算，对矩阵中任意元素加一时，需要其相 </div><div class="t m0 xc h5 y11 ff2 fs4 fc0 sc0 ls5 ws0">邻（上下左右）某一个元素也加一 ................................................................... 63 </div><div class="t m0 x11 h5 y2b ff6 fs4 fc0 sc0 ls0 ws0">1.4. 面试题集合（三） ........................................................................................ 73 </div><div class="t m0 xc h5 y2c ff6 fs4 fc0 sc0 ls0 ws0">1.4.1. 递归和非递归俩种方法实现二叉树的前序遍历.................................... 73 </div><div class="t m0 xc h5 y2d ff6 fs4 fc0 sc0 ls0 ws0">1.4.2. 请修改 append 函数，利用这个函数实现............................................. 78 </div><div class="t m0 x12 h5 y2e ff6 fs4 fc0 sc0 ls0 ws0">1.4.3. 有 n 个长为 m+1 的字符串 ................................................................ 82 1.4.4. n </div><div class="t m0 x13 h5 y2f ff2 fs4 fc0 sc0 ls0 ws0">支</div><div class="t m0 x14 h5 y30 ff2 fs4 fc0 sc0 ls5 ws0">队伍比赛</div><div class="t m0 x15 h6 y31 ff6 fs4 fc0 sc0 ls0 ws0"> ..................................................................................... 84 </div><div class="t m0 x16 h2 y32 ff4 fs2 fc0 sc0 ls0 ws0"> </div><div class="t m0 xc h5 y33 ff6 fs4 fc0 sc0 ls0 ws0">1.4.5. 求一个矩阵中最大的二维矩阵(元素和最大) ........................................ 86 </div><div class="t m0 xc h6 y34 ff6 fs4 fc0 sc0 ls0 ws0">1.4.6. </div><div class="t m0 xd h5 y35 ff2 fs4 fc0 sc0 ls5 ws0">强大的和谐</div><div class="t m0 x17 h6 y34 ff6 fs4 fc0 sc0 ls0 ws0"> ........................................................................................ 90 </div><div class="t m0 xc h5 y36 ff6 fs4 fc0 sc0 ls0 ws0">1.4.7. 通过交换 a,b 中的元素，使[序列 a 元素的和]与[序列 b 元素的和]之间的差最小 </div><div class="t m0 x18 h6 y37 ff6 fs4 fc0 sc0 ls0 ws0">94 </div><div class="t m0 xc h5 y38 ff6 fs4 fc0 sc0 ls0 ws0">1.4.8. 计算 1 到 N 的十进制数中 1 的出现次数 ............................................. 97 </div><div class="t m0 xc h5 y39 ff6 fs4 fc0 sc0 ls0 ws0">1.4.9. 栈的 push、pop 序列[数据结构] .......................................................... 99 </div><div class="t m0 xc h5 y3a ff6 fs4 fc0 sc0 ls0 ws0">1.4.10. 统计整数二进制表示中 1 的个数........................................................102 </div><div class="t m0 x19 h5 y3b ff6 fs4 fc0 sc0 ls0 ws0">1.5. 面试题集合（四） .......................................................................................104 </div><div class="t m0 xc h6 y3c ff6 fs4 fc0 sc0 ls0 ws0">1.5.1. </div><div class="t m0 xd h5 y3d ff2 fs4 fc0 sc0 ls5 ws0">跳台阶问题</div><div class="t m0 x17 h6 y3c ff6 fs4 fc0 sc0 ls0 ws0"> .......................................................................................104 </div><div class="t m0 xc h6 y3e ff6 fs4 fc0 sc0 ls0 ws0">1.5.2. </div><div class="t m0 xd h5 y3f ff2 fs4 fc0 sc0 ls5 ws0">左旋转字符串</div><div class="t m0 x1a h6 y3e ff6 fs4 fc0 sc0 ls0 ws0">....................................................................................105 </div><div class="t m0 xc h5 y40 ff6 fs4 fc0 sc0 ls0 ws0">1.5.3. 在字符串中找出连续最长的数字串 ....................................................109 </div><div class="t m0 xc h6 y41 ff6 fs4 fc0 sc0 ls0 ws0">1.5.4. </div><div class="t m0 xd h5 y42 ff2 fs4 fc0 sc0 ls5 ws0">链表操作</div><div class="t m0 x1b h6 y41 ff6 fs4 fc0 sc0 ls0 ws0">........................................................................................... 111 </div><div class="t m0 xc h5 y43 ff6 fs4 fc0 sc0 ls0 ws0">1.5.5. 有 4 张红色的牌和 4 张蓝色的牌........................................................ 115 </div><div class="t m0 xc h5 y44 ff6 fs4 fc0 sc0 ls0 ws0">1.5.6. 输入两个整数 n 和 m，从数列 1，2，3.......n 中 随意取几个数 ....... 116 </div><div class="t m0 xc h5 yc ff6 fs4 fc0 sc0 ls0 ws0">1.5.7. 输入一个表示整数的字符串，把该字符串转换成整数并输出.............. 118 </div></div><div class="pi" data-data='{"ctm":[1.611161,0.000000,0.000000,1.611161,0.000000,0.000000]}'></div></div>

<div id="pf4" class="pf w0 h0" data-page-no="4"><div class="pc pc4 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622ba8de3d2fbb00078e85c8/bg4.jpg"><div class="t m0 x3 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x3 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x9 h5 y45 ff6 fs4 fc0 sc0 ls0 ws0">1.5.8. 给出一个数列，找出其中最长的单调递减（或递增）子序列..............121 </div><div class="t m0 x9 h5 y46 ff6 fs4 fc0 sc0 ls0 ws0">1.5.9. 四对括号可以有多少种匹配排列方式.................................................124 </div><div class="t m0 x9 h5 y47 ff6 fs4 fc0 sc0 ls0 ws0">1.5.10. 输入一个正数 n，输出所有和为 n 连续正数序列 ................................125 </div><div class="t m0 x1c h5 y48 ff6 fs4 fc0 sc0 ls0 ws0">1.6. 面试题集合（五） .......................................................................................126 </div><div class="t m0 x9 h5 y4 ff6 fs4 fc0 sc0 ls0 ws0">1.6.1. 输入一棵二元树的根结点，求该树的深度..........................................126 </div><div class="t m0 x9 h5 y49 ff6 fs4 fc0 sc0 ls0 ws0">1.6.2. 输入一个字符串，打印出该字符串中字符的所有排列 ........................128 </div><div class="t m0 x9 h5 y4a ff6 fs4 fc0 sc0 ls0 ws0">1.6.3. 输入一个整数数组，调整数组中数字的顺序，使得所有奇数位于数组的前半部分，所有偶数</div><div class="t m0 xc h5 y4b ff2 fs4 fc0 sc0 ls5 ws0">位于数组的后半部分 ...........................................................130 </div><div class="t m0 x9 h5 y4c ff6 fs4 fc0 sc0 ls0 ws0">1.6.4. 给定链表的头指针和一个结点指针，在 O(1)时间删除该结点 .............132 </div><div class="t m0 x9 h5 y4d ff6 fs4 fc0 sc0 ls0 ws0">1.6.5. 输入一个链表的头结点，从尾到头反到来输出每个结点的值..............134 </div><div class="t m0 x9 h5 y4e ff6 fs4 fc0 sc0 ls0 ws0">1.6.6. 用 C++设计一个不能被继承的类 .......................................................136 </div><div class="t m0 x9 h5 y4f ff6 fs4 fc0 sc0 ls0 ws0">1.6.7. 给定链表的头指针和一个结点指针，在 O(1)时间删除该结点 .............138 </div><div class="t m0 x9 h5 y50 ff6 fs4 fc0 sc0 ls0 ws0">1.6.8. 一个数组中除了两个数字之外，其余数字均出现了两次.....................141 </div><div class="t m0 x9 h5 y51 ff6 fs4 fc0 sc0 ls0 ws0">1.6.9. 两个单向链表，找出它们的第一个公共结点 ......................................142 </div><div class="t m0 x9 h5 y52 ff6 fs4 fc0 sc0 ls0 ws0">1.6.10. 输入两个字符串，从第一字符串中删除第二个字符串中所有的字符 ...147 </div><div class="t m0 x1c h5 y53 ff6 fs4 fc0 sc0 ls0 ws0">1.7. 面试题集合（六） .......................................................................................148 </div><div class="t m0 x9 h6 y54 ff6 fs4 fc0 sc0 ls0 ws0">1.7.1. </div><div class="t m0 xa h5 y55 ff2 fs4 fc0 sc0 ls5 ws0">寻找丑数</div><div class="t m0 x1d h6 y54 ff6 fs4 fc0 sc0 ls0 ws0">...........................................................................................148 </div><div class="t m0 x9 h5 y56 ff6 fs4 fc0 sc0 ls0 ws0">1.7.2. 输入数字 n，按顺序输出从 1 最大的 n 位 10 进制数...........................152 </div><div class="t m0 x9 h5 y57 ff6 fs4 fc0 sc0 ls0 ws0">1.7.3. 用递归颠倒一个栈.............................................................................156 </div><div class="t m0 x9 h5 y58 ff6 fs4 fc0 sc0 ls0 ws0">1.7.4. 从扑克牌中随机抽 5 张牌，判断是不是一个顺子 ...............................158 </div><div class="t m0 x9 h5 y59 ff6 fs4 fc0 sc0 ls0 ws0">1.7.5. 把 n 个骰子扔在地上，所有骰子朝上一面的点数之和为 S ..................162 </div><div class="t m0 x9 h5 y5a ff6 fs4 fc0 sc0 ls0 ws0">1.7.6. 排出的所有数字中最小......................................................................165 </div><div class="t m0 x9 h6 y5b ff6 fs4 fc0 sc0 ls0 ws0">1.7.7. </div><div class="t m0 xa h5 y44 ff2 fs4 fc0 sc0 ls5 ws0">数组的旋转</div><div class="t m0 x1e h6 y5b ff6 fs4 fc0 sc0 ls0 ws0"> .......................................................................................170 </div><div class="t m0 x9 h5 y5c ff6 fs4 fc0 sc0 ls0 ws0">1.7.8. 给出一个函数来输出一个字符串的所有排列 ......................................171 </div></div><div class="pi" data-data='{"ctm":[1.611161,0.000000,0.000000,1.611161,0.000000,0.000000]}'></div></div>

<div id="pf5" class="pf w0 h0" data-page-no="5"><div class="pc pc5 w0 h0"><img class="bi x0 y0 w1 h1" alt="" src="https://static.pudn.com/prod/directory_preview_static/622ba8de3d2fbb00078e85c8/bg5.jpg"><div class="t m0 x1 h2 y1 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 x1 h2 y2 ff1 fs0 fc0 sc0 ls0 ws0"> </div><div class="t m0 xc h6 y5d ff6 fs4 fc0 sc0 ls0 ws0">1.7.9. </div><div class="t m0 xd h5 y5e ff2 fs4 fc0 sc0 ls5 ws0">实现函数 </div><div class="t m0 x1f h6 y5d ff6 fs4 fc0 sc0 ls0 ws0">double Power(double base,int exponent) .................................173 </div><div class="t m0 xc h6 ye ff6 fs4 fc0 sc0 ls0 ws0">1.7.10. </div><div class="t m0 x20 h5 y5f ff2 fs4 fc0 sc0 ls5 ws0">更优的解法：</div><div class="t m0 x21 h6 ye ff6 fs4 fc0 sc0 ls0 ws0">....................................................................................175 </div><div class="t m0 xc h6 y60 ff6 fs4 fc0 sc0 ls0 ws0">1.7.11. </div><div class="t m0 x14 h5 y61 ff2 fs4 fc0 sc0 ls5 ws0">单列模式</div><div class="t m0 x15 h6 y60 ff6 fs4 fc0 sc0 ls0 ws0">...........................................................................................176 </div><div class="t m0 x19 h5 y62 ff6 fs4 fc0 sc0 ls0 ws0">1.8. 面试题集合（七） .......................................................................................178 </div><div class="t m0 xc h5 y63 ff6 fs4 fc0 sc0 ls0 ws0">1.8.1. 找出该字符串中对称的子字符串的最大长度 ......................................178 </div><div class="t m0 xc h5 y64 ff6 fs4 fc0 sc0 ls0 ws0">1.8.2. 数组中有一个数字出现的次数超过了数组长度的一半，找出这个数字 180 </div><div class="t m0 xc h5 y65 ff6 fs4 fc0 sc0 ls0 ws0">1.8.3. 输入二叉树中的两个结点，输出这两个结点在数中最低的共同父结点 180 </div><div class="t m0 xc h6 y66 ff6 fs4 fc0 sc0 ls0 ws0">1.8.4. </div><div class="t m0 xd h5 y67 ff2 fs4 fc0 sc0 ls5 ws0">复杂链表</div><div class="t m0 x1b h6 y66 ff6 fs4 fc0 sc0 ls0 ws0">...........................................................................................187 </div><div class="t m0 xc h6 y68 ff6 fs4 fc0 sc0 ls0 ws0">1.8.5. </div><div class="t m0 xd h5 y69 ff2 fs4 fc0 sc0 ls5 ws0">链表面试题</div><div class="t m0 x17 h6 y68 ff6 fs4 fc0 sc0 ls0 ws0"> .......................................................................................190 </div><div class="t m0 xc h5 y6a ff6 fs4 fc0 sc0 ls0 ws0">1.8.6. 链表和数字的区别在哪里 ..................................................................197 </div><div class="t m0 x1 h7 y6b ff1 fs0 fc0 sc0 ls0 ws0"> 1.8.7. strstr()</div><div class="t m0 x22 h5 y6c ff2 fs4 fc0 sc0 ls5 ws0">函数功能</div><div class="t m0 x23 h6 y6b ff6 fs4 fc0 sc0 ls0 ws0"> .................................................................................198 </div><div class="t m0 xc h5 y6d ff6 fs4 fc0 sc0 ls0 ws0">1.8.8. 一个 int 数组，里面数据无任何限制，要求求出所有这样的数 a[i]，其左 </div><div class="t m0 xc h5 y6e ff2 fs4 fc0 sc0 ls5 ws0">边的数都小于等于它，右边的数都大于等于它.................................................199 </div><div class="t m0 xc h5 y6f ff6 fs4 fc0 sc0 ls0 ws0">1.8.9. 一个文件，内含一千万行字符串，每个字符串在 1K 以内，要求找出所有 </div><div class="t m0 xc h5 y70 ff2 fs4 fc0 sc0 ls5 ws0">相反的串对，如 abc 和 cba。 ...........................................................................200 </div><div class="t m0 xc h5 y71 ff6 fs4 fc0 sc0 ls0 ws0">1.8.10. 给出一个文件，里面包含两个字段{url、size}，即 url 为网址，size 为对应 </div><div class="t m0 xc h5 y72 ff2 fs4 fc0 sc0 ls5 ws0">网址访问的次数 ..............................................................................................205 </div><div class="t m0 x19 h5 y73 ff6 fs4 fc0 sc0 ls0 ws0">1.9. 面试题集合（八） .......................................................................................209 </div><div class="t m0 xc h5 y74 ff6 fs4 fc0 sc0 ls0 ws0">1.9.1. 给定一个存放整数的数组，重新排列数组使得数组左边为奇数，右边为偶数 </div><div class="t m0 x18 h6 y75 ff6 fs4 fc0 sc0 ls0 ws0">209 </div><div class="t m0 xc h5 y76 ff6 fs4 fc0 sc0 ls0 ws0">1.9.2. 用 C 语言实现函数 void * memmove(void *dest,const void *src,size_t n) 210 </div><div class="t m0 xc h6 y77 ff6 fs4 fc0 sc0 ls0 ws0">1.9.3. </div><div class="t m0 xd h5 y78 ff2 fs4 fc0 sc0 ls5 ws0">随机发生器</div><div class="t m0 x17 h6 y77 ff6 fs4 fc0 sc0 ls0 ws0"> .......................................................................................212 </div><div class="t m0 xc h6 y79 ff6 fs4 fc0 sc0 ls0 ws0">1.9.4. </div><div class="t m0 xd h5 y7a ff2 fs4 fc0 sc0 ls5 ws0">搜索引擎</div><div class="t m0 x1b h6 y79 ff6 fs4 fc0 sc0 ls0 ws0">...........................................................................................212 </div></div><div class="pi" data-data='{"ctm":[1.611161,0.000000,0.000000,1.611161,0.000000,0.000000]}'></div></div>