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#! /usr/bin/python3
import unittest
def majority(list):
s=dict()
for x in list:
s.setdefault(x,0)
s[x] += 1
m=max(s.values())
if m > int(len(list)/2):
q=dict()
for x in s.keys():
q[s[x]]=x
return q[m]
else:
return -1
class TestMajority(unittest.TestCase):
def test_ex1(self):
self.assertEqual(majority((1, 2, 2, 3, 2, 4, 2)),2,'example 1')
def test_ex2(self):
self.assertEqual(majority((1, 3, 1, 2, 4, 5)),-1,'example 2')
unittest.main()
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