字典的字母写成大写了,也不能查成出来,没有报没有这个字典,反而报这个错……找了好久…

数组维度搞错了 一次运行,要输入多组数据,直到读至输入文件末尾(EOF)为止 while(scanf("%d %d",&a, &b) != EOF) // 输入结束时,scanf函数返回值为EOF(-1),即没有数据输入时会退出while循环 如何键盘输入EOF windows Ctrl+Z linux  Ctrl+d…

State whether each of the following is true or false. If false, explain why. Assume the state ment using std::cout; is used. a) Comments cause the computer to print the text after the // on the screen when the program is executed. b) The escape seque…

Given a sorted array of integers nums and integer values a, b and c. Apply a function of the form f(x) = ax2 + bx + c to each element x in the array. The returned array must be in sorted order. Expected time complexity: O(n) Example: nums = [-4, -2,…

414. Third Maximum Number 给一个非空的整数数组,找到这个数组中第三大的值,如果不存在,那么返回最大的值.要求时间复杂度为o(n) 例如: Example 1: Input: [3, 2, 1] Output: 1 Explanation: The third maximum is 1. Example 2: Input: [1, 2] Output: 2 Explanation: The third maximum does not exist, so the maxi…

Given a sorted array of integers nums and integer values a, b and c. Apply a function of the form f(x) = ax2 + bx + c to each element x in the array. The returned array must be in sorted order. Expected time complexity: O(n) Example: nums = [-4, -2,…

class Array Arrays are ordered, integer-indexed collections of any object. Array indexing starts at 0, as in C or Java. A negative index is assumed to be relative to the end of the array—that is, an index of -1 indicates the last element of the array…

本文转载自:http://blog.csdn.net/sinat_27706697/article/details/47122137 感谢作者:秋恨雪 通常情况下,我们在使用数组(Array)或字典(Dictionary)时会使用到下标.其实在Swift中,我们还可以给类.结构.枚举等自定义下标(subscript). 一.基本使用 struct TimesTable { let multiplier: Int subscript(index: Int) -> Int { return mult…

Given a sorted array of integers nums and integer values a, b and c. Apply a function of the form f(x) = ax2 + bx + c to each element x in the array. The returned array must be in sorted order. Expected time complexity: O(n) Example: nums = [-4, -2,…

Given a rotated sorted array, recover it to sorted array in-place. Example [4, 5, 1, 2, 3] -> [1, 2, 3, 4, 5] Challenge In-place, O(1) extra space and O(n) time. Clarification What is rotated array: - For example, the orginal array is [1,2,3,4], The…