Restructuring

solutions/ProjectEuler/042/desc.yml

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+title: Coded triangle numbers
+url: http://projecteuler.net/problem=42
+
+desc: |
+    The nth term of the sequence of triangle numbers is given by, tn = 0.5n(n+1); so the first ten triangle numbers are:
+    1, 3, 6, 10, 15, 21, 28, 36, 45, 55, ...
+    By converting each letter in a word to a number corresponding to its alphabetical position and adding these values we form a word value. For example, the word value for SKY is 19 + 11 + 25 = 55 = t10. If the word value is a triangle number then we shall call the word a triangle word.
+    Using words.txt (right click and 'Save Link/Target As...'), a 16K text file containing nearly two-thousand common English words, how many are triangle words?
+solution: Bruteforce
+
+solutions:
+  solve.php:
+    desc: Expects data on STDIN
+    language: php
+    parameters: < ProjectEuler\042\words.txt

solutions/ProjectEuler/042/solve.php

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+<?php
+$words = explode('","',substr(file_get_contents('php://STDIN'),1,-1));
+
+//Find triangles
+for($t=1;$t<40;$t++) {
+	$triangle_numbers[] = 0.5*$t*($t+1);
+}
+
+foreach($words as $word) {
+	for($c =0; $c < strlen($word); $c++) {
+		$char_sum += ord($word[$c]) - 64;	
+	}
+	if(in_array($char_sum,$triangle_numbers)) {
+		$result++;
+	}
+	$char_sum = 0;
+}
+echo $result;