doukaku4_2.js

// オフラインリアルタイムどう書く第4回の問題
// テトロミノ認識
// http://nabetani.sakura.ne.jp/hena/ord4tetroid/

"use strict";

function solve(input) {
    var sum = [];
    input.split(",").forEach(function(cell, i, piece) {
        piece.forEach(function(another, j) {
            if(i === j) return;
            sum.push(Math.pow(another[0] - cell[0], 2) + Math.pow(another[1] - cell[1], 2));
        });
    });

    switch(sum.sort().join(",")) {
        case "1,1,1,1,1,1,1,1,2,2,2,2": return "O";
        case "1,1,1,1,1,1,2,2,2,2,4,4": return "T";
        case "1,1,1,1,1,1,2,2,2,2,5,5": return "S";
        case "1,1,1,1,1,1,2,2,4,4,5,5": return "L";
        case "1,1,1,1,1,1,4,4,4,4,9,9": return "I";
        default: return "-";
    }
}


function test(input, expected) {
    var result = solve(input);
    if(result !== expected) {
        console.log("-------------\ninput = %s\n\nexpected = %s\nresult   = %s", input, expected, result);
    }
}


test("55,55,55,55", "-");
test("07,17,06,05", "L");
test("21,41,31,40", "L");
test("62,74,73,72", "L");
test("84,94,74,75", "L");
test("48,49,57,47", "L");
test("69,89,79,68", "L");
test("90,82,91,92", "L");
test("13,23,03,24", "L");
test("24,22,25,23", "I");
test("51,41,21,31", "I");
test("64,63,62,65", "I");
test("49,69,59,79", "I");
test("12,10,21,11", "T");
test("89,99,79,88", "T");
test("32,41,43,42", "T");
test("27,16,36,26", "T");
test("68,57,58,67", "O");
test("72,62,61,71", "O");
test("25,24,15,14", "O");
test("43,54,53,42", "S");
test("95,86,76,85", "S");
test("72,73,84,83", "S");
test("42,33,32,23", "S");
test("66,57,67,58", "S");
test("63,73,52,62", "S");
test("76,68,77,67", "S");
test("12,11,22,01", "S");
test("05,26,06,25", "-");
test("03,11,13,01", "-");
test("11,20,00,21", "-");
test("84,95,94,86", "-");
test("36,56,45,35", "-");
test("41,33,32,43", "-");
test("75,94,84,95", "-");
test("27,39,28,37", "-");
test("45,34,54,35", "-");
test("24,36,35,26", "-");
test("27,27,27,27", "-");
test("55,44,44,45", "-");
test("70,73,71,71", "-");
test("67,37,47,47", "-");
test("43,45,41,42", "-");
test("87,57,97,67", "-");
test("49,45,46,48", "-");
test("63,63,52,72", "-");
test("84,86,84,95", "-");
test("61,60,62,73", "-");
test("59,79,69,48", "-");
test("55,57,77,75", "-");