Assume you are an awesome parent and want to give your children some cookies. But, you should give each child at most one cookie.
Each child has a greed factor , which is the minimum size of a cookie that the child will be content with; and each cookie has a size . If , we can assign the cookie to the child , and the child will be content. Your goal is to maximize the number of your content children and output the maximum number.
448.Find All Numbers Disappeared in an Array
Given an array of integers where is in the range , return an array of all the integers in the range that do not appear in .
Example 1:
434.Number of Segments in a String
Given a string , return the number of segments in the string.
A segment is defined to be a contiguous sequence of non-space characters.
Given two non-negative integers, and represented as string, return the sum of and as a string.
You must solve the problem without using any built-in library for handling large integers (such as ). You must also not convert the inputs to integers directly.
Given an integer array , return the third distinct maximum number in this array. If the third maximum does not exist, return the maximum number.
Example 1:
Given an integer , return a string array (1-indexed) where:
Given a string which consists of lowercase or uppercase letters, return the length of the longest palindrome that can be built with those letters.
Letters are case sensitive, for example, is not considered a palindrome here.
405.Convert a Number to Hexadecimal
Given an integer , return a string representing its hexadecimal representation. For negative integers, two’s complement method is used.
All the letters in the answer string should be lowercase characters, and there should not be any leading zeros in the answer except for the zero itself.
Given the of a binary tree, return the sum of all left leaves.
A leaf is a node with no children. A left leaf is a leaf that is the left child of another node.
A binary watch has 4 LEDs on the top to represent the hours (0-11), and 6 LEDs on the bottom to represent the minutes (0-59). Each LED represents a zero or one, with the least significant bit on the right.