任何聚合函数都可以通过增加后缀 Array, 来使原来的参数类型 T 变为新的参数类型 Array(T)。 在处理时,原来的聚合函数会依次处理 Array 中的每一项. 示例 sumArray(arr) : 对 Arrays 中的所有元素进行求和,即 sum(arraySum(arr)) uniqArray(arr): 对 Arrays 中的所有元素进行排重值,即 uniq(arrayJoin(ar...
Given an array of N positive integers. Count the number of pairs whose sum exists in the given array. While repeating pairs will not be counted again. And we can’t make a pair using same position element. Eg : (2, 1) and (1, 2) will be considered as only one pair. I was able...
Input− int arr[] = {1, 1, 2, 3, 3, 4, 4} Output − count is 4 Explanation − In the given array there are 4 distinct elements and those are 1, 2, 3, 4 but the size of array is 7 as it contains repetitive elements and our task was to remove the duplicates and then...