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发信人: zhaowei2008 (zhaowei), 信区: JobHunting
标  题: 问个题目： 从1-n 中找出k, 使得 k=a^2 +b^2 (a b 为整数）
发信站: BBS 未名空间站 (Sun Feb 23 15:31:23 2014, 美东)

问个题目： 从1-n 中找出k, 使得 k=a^2 +b^2 (a b 为整数）

有好的算法吗？ 


(defn find-k [n]

swuecho

(* Variations of Fizzbuzz in OCaml, translated from the Rust version in
   "FizzBuzz Revisited" by Lindsey Kuper:
   http://composition.al/blog/2013/03/02/fizzbuzz-revisited/ *)

(* The FizzBuzz test proposed by Imran Ghory:
   http://imranontech.com/2007/01/24/using-fizzbuzz-to-find-developers-who-grok-coding/ *)
(* and made famous by Jeff Atwood:
   http://www.codinghorror.com/blog/2007/02/why-cant-programmers-program.html *)

swuecho

define({

    initFullFormAjaxUpload: function() {

        // Once the FormData instance is ready and we know
        // where to send the data, the code is the same
        // for both variants of this technique
        function sendXHRequest(formData, uri) {
            var xhr = new XMLHttpRequest();

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First

Explain

Second

Second Explain

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Hao Wu

Intelisurvey.Inc

echowuhao@gmail.com

27 Platinum Circle

Ladera Ranch , CA ,

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(* test data *)

let answer = Div (Div (Con 1972, Con 2), Con 23);; (* 42 *)

let error = Div(Con 1, Con 0);; (* Exception: Division_by_zero. *)

(* term type *)

type term = Con of int | Div of term * term ;;

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(* test data *)

let answer = Div (Div (Con 1972, Con 2), Con 23);; (* 42 *)

let error = Div(Con 1, Con 0);; (* Exception: Division_by_zero. *)

(* term type *)

type term = Con of int | Div of term * term ;;

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// Use Gists to store code you would like to remember later on
console.log(window); // log the "window" object to the console

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(* term type *)

type term = Con of int | Div of term * term ;;

(* test data *)

let answer = Div (Div (Con 1972, Con 2), Con 23);; (* 42 *)

let error = Div(Con 1, Con 0);; (* Exception: Division_by_zero. *)

swuecho

use v5.12;
use IO::Scalar;
use Encode qw/decode/;
use LWP::Simple;
use Mojo::DOM;
use Email::Stuffer;

my $data;

## Open a handle on a string, and append to it: