projecteuler - 随笔分类 - 水滴四川

Project Euler 110:Diophantine reciprocals II 丢番图倒数II

摘要：Diophantine reciprocals IIIn the following equation x, y, and n are positive integers.For n = 4 there are exactly three distinct solutions:It can be v... 阅读全文

posted @ 2016-01-24 15:27 水滴四川阅读(544) 评论(0) 推荐(0)

Project Euler 109 ：Darts 飞镖

摘要：DartsIn the game of darts a player throws three darts at a target board which is split into twenty equal sized sections numbered one to twenty.The sco... 阅读全文

posted @ 2016-01-23 20:00 水滴四川阅读(1008) 评论(0) 推荐(0)

Project Euler 108：Diophantine reciprocals I 丢番图倒数I

摘要：Diophantine reciprocals IIn the following equation x, y, and n are positive integers.For n = 4 there are exactly three distinct solutions:What is the ... 阅读全文

posted @ 2016-01-22 19:28 水滴四川阅读(639) 评论(0) 推荐(0)

Project Euler 107：Minimal network 最小网络

摘要：Minimal networkThe following undirected network consists of seven vertices and twelve edges with a total weight of 243.The same network can be represe... 阅读全文

posted @ 2016-01-22 15:21 水滴四川阅读(534) 评论(0) 推荐(0)

Project Euler 106：Special subset sums: meta-testing 特殊的子集和：元检验

摘要：Special subset sums: meta-testingLet S(A) represent the sum of elements in set A of sizen. We shall call it a special sum set if for any two non-empty... 阅读全文

posted @ 2016-01-20 19:14 水滴四川阅读(574) 评论(0) 推荐(0)

Project Euler P105:Special subset sums: testing 特殊的子集和检验

摘要：Special subset sums: testingLet S(A) represent the sum of elements in set A of sizen. We shall call it a special sum set if for any two non-empty disj... 阅读全文

posted @ 2016-01-19 21:57 水滴四川阅读(477) 评论(0) 推荐(0)

Project Euler 104:Pandigital Fibonacci ends 两端为全数字的斐波那契数

摘要：Pandigital Fibonacci endsThe Fibonacci sequence is defined by the recurrence relation:F[n] = F[n-1] + F[n-2], where F[1] = 1 and F[2] = 1.It turns out... 阅读全文

posted @ 2016-01-19 21:53 水滴四川阅读(558) 评论(0) 推荐(0)

Project Euler 103：Special subset sums: optimum 特殊的子集和：最优解

摘要：Special subset sums: optimumLet S(A) represent the sum of elements in set A of size n. We shall call it a special sum set if for any two non-empty dis... 阅读全文

posted @ 2016-01-19 15:59 水滴四川阅读(1043) 评论(0) 推荐(0)

Project Euler 101 :Optimum polynomial 最优多项式

摘要：Optimum polynomialIf we are presented with the first k terms of a sequence it is impossible to say with certainty the value of the next term, as there... 阅读全文

posted @ 2016-01-17 21:02 水滴四川阅读(645) 评论(0) 推荐(0)

Project Euler 100 : Arranged probability 安排概率

摘要：Arranged probabilityIf a box contains twenty-one coloured discs, composed of fifteen blue discs and six red discs, and two discs were taken at random,... 阅读全文

posted @ 2015-12-07 22:39 水滴四川阅读(713) 评论(0) 推荐(0)

Project Euler 99:Largest exponential 最大的幂

摘要：Largest exponential Comparing two numbers written in index form like 211 and 37 is not difficult, as any calculator would confirm that 211 = 2048 < 37 阅读全文

posted @ 2015-12-07 22:11 水滴四川阅读(577) 评论(0) 推荐(0)

Project Euler 98：Anagramic squares 重排平方数

摘要：Anagramic squaresBy replacing each of the letters in the word CARE with 1, 2, 9, and 6 respectively, we form a square number: 1296 = 362. What is rema... 阅读全文

posted @ 2015-12-07 21:25 水滴四川阅读(863) 评论(1) 推荐(0)

Project Euler 97 ：Large non-Mersenne prime 非梅森大素数

摘要：Large non-Mersenne primeThe first known prime found to exceed one million digits was discovered in 1999, and is a Mersenne prime of the form 26972593−... 阅读全文

posted @ 2015-12-06 20:21 水滴四川阅读(670) 评论(0) 推荐(0)

Project Euler 96：Su Doku 数独

摘要：Su DokuSu Doku (Japanese meaningnumber place) is the name given to a popular puzzle concept. Its origin is unclear, but credit must be attributed to L... 阅读全文

posted @ 2015-12-06 19:28 水滴四川阅读(1042) 评论(0) 推荐(0)

Project Euler 95:Amicable chains 亲和数链

摘要：Amicable chainsThe proper divisors of a number are all the divisors excluding the number itself. For example, the proper divisors of 28 are 1, 2, 4, 7... 阅读全文

posted @ 2015-12-05 19:17 水滴四川阅读(787) 评论(0) 推荐(0)

Project Euler 94:Almost equilateral triangles 几乎等边的三角形

摘要：Almost equilateral trianglesIt is easily proved that no equilateral triangle exists with integral length sides and integral area. However, thealmost e... 阅读全文

posted @ 2015-12-04 22:31 水滴四川阅读(833) 评论(0) 推荐(0)

Project Euler 93：Arithmetic expressions 算术表达式

摘要：Arithmetic expressionsBy using each of the digits from the set, {1, 2, 3, 4}, exactly once, and making use of the four arithmetic operations (+, −, *,... 阅读全文

posted @ 2015-12-03 17:25 水滴四川阅读(757) 评论(0) 推荐(0)

Project Euler 92：Square digit chains 平方数字链

摘要：题目Square digit chainsA number chain is created by continuously adding the square of the digits in a number to form a new number until it has been seen... 阅读全文

posted @ 2015-12-01 16:58 水滴四川阅读(793) 评论(0) 推荐(0)

Project Euler 91：Right triangles with integer coordinates 格点直角三角形

摘要：Right triangles with integer coordinatesThe points P (x1, y1) and Q (x2, y2) are plotted at integer co-ordinates and are joined to the origin, O(0,0),... 阅读全文

posted @ 2015-11-30 21:19 水滴四川阅读(577) 评论(0) 推荐(0)

Project Euler 90：Cube digit pairs 立方体数字对

摘要：Cube digit pairsEach of the six faces on a cube has a different digit (0 to 9) written on it; the same is done to a second cube. By placing the two cu... 阅读全文

posted @ 2015-11-29 20:03 水滴四川阅读(536) 评论(0) 推荐(0)

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