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*389. Find the Difference (string + map(26)) read problems carefully
Given two strings s and t which consist of only lowercase letters. String t is generated by random shuffling string s and then add one more letter at ...
分类:其他好文   时间:2018-06-09 00:09:17    阅读次数:170
530. Minimum Absolute Difference in BST
Given a binary search tree with non-negative values, find the minimum absolute difference between values of any two nodes. Example: Input: 1 \ 3 / 2 O ...
分类:其他好文   时间:2018-06-07 14:13:24    阅读次数:190
A.1088 Rational Arithmetic (20)
For two rational numbers, your task is to implement the basic arithmetics, that is, to calculate their sum, difference, product and quotient. Input Sp ...
分类:其他好文   时间:2018-06-06 00:55:02    阅读次数:261
*187. Repeated DNA Sequences (hashmap, one for loop)(difference between subsequence & substring)
All DNA is composed of a series of nucleotides abbreviated as A, C, G, and T, for example: "ACGAATTCCG". When studying DNA, it is sometimes useful to ...
分类:其他好文   时间:2018-06-05 00:42:34    阅读次数:173
530. Minimum Absolute Difference in BST
利用中序遍历二叉排序树出来是个升序序列的特点,每访问一个节点,减去前面节点即为这个节点的最小差值。 ...
分类:其他好文   时间:2018-06-04 16:54:58    阅读次数:110
1.4.10
question: Modify binary search so that it always returns the element with the smallest index that mathes the search element (and still guarantees loga ...
分类:其他好文   时间:2018-06-03 14:31:23    阅读次数:132
Python set
python的set和其他语言类似, 是一个无序不重复元素集, 基本功能包括关系测试和消除重复元素. 集合对象还支持union(联合), intersection(交), difference(差)和sysmmetric difference(对称差集)等数学运算. 基本操作 s={1,2,"a"} ...
分类:编程语言   时间:2018-06-03 12:27:23    阅读次数:201
41. First Missing Positive
问题描述: Given an unsorted integer array, find the smallest missing positive integer. Example 1: Example 2: Example 3: Note: Your algorithm should run in ...
分类:其他好文   时间:2018-06-02 12:58:11    阅读次数:165
[ /* 和 / 的区别 ] Difference between / and /* in servlet mapping url pattern
<url-pattern>/*</url-pattern> The /* on a servlet overrides all other servlets, including all servlets provided by the servletcontainer such as the de ...
分类:移动开发   时间:2018-05-30 01:18:55    阅读次数:222
Difference between == and ===
In swift 3 and above (or !==) Checks if the values are identical (both point to the same memory address). Comparing reference types. Like == in Obj-C ...
分类:其他好文   时间:2018-05-29 12:00:14    阅读次数:150
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