-- value at a finite index of a finite or infinite list. or is the -- disjunctive dual of and. and, or :: [Bool] -> Bool and = foldr (&&) True or = foldr (||) False -- Applied to a predicate and a list, any determines if any element -- of the list satisfies the predic...
haskell list的list的Index，返回元素在list的list中的位置正如chi在评论中提到的，可以使用!!提取所需的...
haskell list的list的Index，返回元素在list的list中的位置正如chi在评论中提到的，可以使用!!提取所需的...
问Langford序列实现Haskell或CEN这是我第一次编写的命令式版本的“大部分功能”版本(见下面的第一份增编...
-- Having code split up into several modules has quite a lot of advantages. If a module is generic enough, the functions it exports can be used in a multitude of different programs. -- which is by default import Data.List numUniques :: (Eq a)=> [a] -> Int ...
从数据结构到算法到机器学习到刷题,内容繁杂,仅作学习的记录; leetCode 27题:RemoveElement: Given an array and a value, remove all instances of that value in-place and retur...leetcode刷题记录——1、Two Sum 题目: 给定一个整数数组 nums 和一个目标值 target,请你在该数组中找出和为目标值的...
(:use :cl :listopia) (:shadowing-import-from :listopia :and :break :find :last :map :or)Installation(ql:quickload :listopia)Basic functionshead (list &optional (default nil))Extract the first element of a list. If list is empty, returns DEFAULT value....
{"severity": "warning"}], "a11y/no-obsolete-element": [true, {"severity": "warning"}], "a11y/no-outline-none": false, "a11y/no-spread-text": false, "a11y/no-text-align-justify": false, "a11y/selector-pseudo-class-focus": false, "prettier/prettier": [ true, { "parser": ...
matrixIndex’ y (r:rs) = case elemIndex e r of Just x → Just (x,y) Nothing → matrixIndex’ (y+1) rs matrixIndex returns the (x,y) position in the matrix of the given element (or Nothing if it is not found). 1.2 Number Theory Functions ...
create a 25 ×× 25 matrix with autoregressive structure with p=9/10p=9/10, every element in the matrix should be equal to (9/10)|i−j|(9/10)|i−j| where i is the row index and j is the column index. Report the row and column sums of this matrix. ...