2016 10 28 考试 时间 7:50 AM to 11:15 AM 下载链接: 试题 考试包 这次考试对自己的表现非常不满意!! T1看出来是dp题目,但是在考试过程中并没有推出转移方程,考虑了打表,但是发现暴力程序的速度不够,直接交了暴力,没想到暴力程序爆0,考试后仔细查找发现是在深搜过程中的一个剪枝处忘记调整全局变量的值,,,低级错误要引以为戒!! for (int i = 0; i <= cur; i++) { a[x] += i; if (a[x] < a[x-1]) { a[x…
18. 4Sum Given an array S of n integers, are there elements a, b, c, and d in S such that a + b + c + d = target? Find all unique quadruplets in the array which gives the sum of target. Note For example, given array S = [1, 0, -1, 0, -2, 2], and targ…
15. 3Sum Given an array S of n integers, are there elements a, b, c in S such that a + b + c = 0? Find all unique triplets in the array which gives the sum of zero. Note: The solution set must not contain duplicate triplets. For example, given array…
16.3Sum Closest Given an array S of n integers, find three integers in S such that the sum is closest to a given number, target. Return the sum of the three integers. You may assume that each input would have exactly one solution. For example, given…
1. 简单变量 declare v_cnt NUMBER(10,0) := 0; BEGIN SELECT COUNT(1) INTO v_cnt FROM concept.Decoction WHERE DecoctionId = -1; IF v_cnt = 0 THEN insert into concept.Decoction( DecoctionId, Code, Name, MnemonicCode, SpellCode, WBCode, ClinicItemId, I…
变量的解构赋值 ES6允许按照一定模式,从数组和对象中提取值,对变量进行赋值,这被称为解构. 数组的解构赋值 以前,为变量赋值,只能直接指定值: 1 2 3 var a = 1; var b = 2; var c = 3; ES6允许写成下面这样: 1 var [a, b, c] = [1, 2, 3]; 这种写法属于"模式匹配",只要等号两边的模式相同,左边的变量就会被赋予对应的值,如果解构不成功,变量的值就等于undefined,下面是一些使用嵌套数组进行解构的例子: 1 2 3…
变量是什么? 变量的作用 Variables are used to store information to be referenced and manipulated in a computer program. They also provide a way of labeling data with a descriptive name, so our programs can be understood more clearly by the reader and ourselves…
