Commit 08238d5

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Add solution 139.

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	`1`	`+class Solution {`
	`2`	`+`
	`3`	`+ /**`
	`4`	`+ * @param String $s`
	`5`	`+ * @param String[] $wordDict`
	`6`	`+ * @return Boolean`
	`7`	`+ */`
	`8`	`+ function wordBreak($s, $wordDict) {`
	`9`	`+ $len = strlen($s);`
	`10`	`+ $end;`
	`11`	`+ $a = array_fill(0, $len, false);`
	`12`	`+ $a[0] = true;`
	`13`	`+ for ($i = 0; $i < $len; $i++) {`
	`14`	`+ if (!$a[$i]) continue;`
	`15`	`+ foreach ($wordDict as $word) {`
	`16`	`+ $end = $i + strlen($word);`
	`17`	`+ if ($end <= $len && substr($s, $i, $end - $i) == $word) {`
	`18`	`+ if ($end == $len) return true;`
	`19`	`+ $a[$end] = true;`
	`20`	`+ }`
	`21`	`+ }`
	`22`	`+ }`
	`23`	`+ return false;`
	`24`	`+ }`
	`25`	`+}`

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