Merge branch 'master' of https://github.com/parthberk/leetcode-solutions

Author: Parth

#229_majority_element_II.py

@@ -0,0 +1,10 @@
+class Solution(object):
+    def majorityElement(self, nums):
+        mylist=set()
+        counter=collections.Counter()
+        counter.update(nums)
+        for i in counter:
+            if counter[i] > len(nums)/3:
+                mylist.add(i)
+        return mylist
+        

387_First Unique Character in a String.py

@@ -0,0 +1,7 @@
+class Solution(object):
+    def firstUniqChar(self, s):
+        counter=collections.Counter(s)
+        for char in s:
+            if counter[char]==1:
+                return s.index(char)
+        return -1

451_Sort Characters By Frequency.py

@@ -0,0 +1,12 @@
+class Solution(object):
+    def frequencySort(self, s):
+        hash={}
+        mystring=""
+        for char in s:
+            hash[char]=hash.get(char,0)+1
+        x_sorted=sorted(hash.items(), key=operator.itemgetter(1),reverse=True)
+        sorted_dict = collections.OrderedDict(x_sorted)
+        for k,v in sorted_dict.items():
+            for i in range(v):
+                mystring+=str(k)
+        return mystring