【leetcode】1338. Reduce Array Size to The Half 题目如下: Given an arrayarr. You can choose a set of integers and remove all the occurrences of these integers in the array. Returnthe minimum size of the setso that at least half of the integers of the array are removed. Example 1: In...
Output: 2 Explanation: Choosing {3,7} will make the new array [5,5,5,2,2] which has size 5 (i.e equal to half of the size of the old array). Possible sets of size 2 are {3,5},{3,2},{5,2}. Choosing set {2,7} is not possible as it will make the new array [3,3...
LeetCode-1342. Reduce Array Size to The Half i++文章分类运维 Given an array arr. You can choose a set of integers and remove all the occurrences of these integers in the array. Returnthe minimum size of the setso thatat leasthalf of the integers of the array are removed...
给你一个数组,问你最少去掉几个数字(去掉某个数字,意味着不管这个数字出现了几次,都当作一个数字一起去掉),可以使数组里剩余的数字个数 至少减半。 二. 代码 class Solution { public int minSetSize(int[] arr) { int length=arr.length; int[] duplicate = new int[100001]; //step1: 保存每个数字...
我有一个双精度数组,我需要使用java streams将该数组转换为JSONArray。我尝试使用forEach (共享可变性),但这会导致数据丢失。 public static JSONArray arrayToJson(double[] array) throws JSONException{ JSONArray jsonArray = new JSONArray(); Arrays.stream(array) .forEach(jsonArray::put); return ...
leetcode 算法 开发语言 字符串 转载 mob64ca1419e0cc 3月前 37阅读 js:Array.reduce累加计算、合并数组 语法参数描述prevValue必需。上一个值, 或者计算结束后的返回值。currentValue必需。当前元素currentI。initialValue可选。传递给函数的初始值示例:累加计算示例:合并数组... ...
语法 arr.reduce(callback, [initialValue]) callback (执行数组中每个值的函数,包含四个参数) - previousValue (上一次调用回调返回的值,或者是提供的初始值...(initialValue)) - currentValue (数组中当前被处理的元素) - index (当前元素在数组中的索引) - array (调用 reduce 的数组) initialValue...,...
问题不在于reduce,而在于你将很多数字相乘,得到Infinity(或-Infinity),然后再乘以0,但Infinity * 0...
四,使用map函数转大写 msg...add函数。 注:上述两个代码中的fori in num 这里的num应改为 array 或者:(使用内置map函数,匿名函数): res=map(lambda x:x+1,num) print leetcode刷题(9月24) 1,python初始化数组 2,字符串列表的转换 3,列表生成器 4,map函数的使用 5,lambda函数 ...
[LeetCode] 34. Find First and Last Position of Element in Sorted Array 2019-11-04 12:18 −Given an array of integers nums sorted in ascending order, find the starting and ending position of a given target value. If ... CNoodle ...