Add SRM 627

Author: junk0612

TopCoder/SRMs/SRM627/Div2_250_howManySquares/ManySquares.java

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+public class ManySquares {
+
+	public int howManySquares(int[] sticks) {
+		int[] num = new int[1001];
+		for (int i = 0; i < sticks.length; i++)
+			num[sticks[i]]++;
+		int result = 0;
+		for (int i = 0; i < num.length; i++)
+			result += num[i] / 4;
+		return result;
+	}
+
+}

TopCoder/SRMs/SRM627/Div2_250_howManySquares/README.md

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+public class HappyLetterDiv2 {
+
+	public char getHappyLetter(String letters) {
+		int[] appears = new int[26];
+		for (int i = 0; i < letters.length(); i++)
+			appears[letters.charAt(i) - 'a']++;
+		for (int i = 0; i < 26; i++)
+			if (appears[i] > letters.length() / 2)
+				return (char) (i + 'a');
+		return '.';
+	}
+
+}