Incorrest hash counting of CountMinSketch

[awen-li]

Description

During using the lib CountMinSketch, the counting is unexpected when the item number is larger than the table size.

Steps/Code/Corpus to Reproduce

'''
from bounter import CountMinSketch

Cms = None
LogCounting = None

def setUp(LogCounting = None):
return CountMinSketch(1, width=2, depth=2, log_counting=LogCounting)

Cms = setUp ()

Loop = 8
ItemNum=8

print ("Loop = ", Loop)
for i in range (0, Loop):
for s in range (0, ItemNum):
Cms.increment(str (s))

for s in range (0, 8):
print ("Cms[%d] = %d" %(s, Cms[str (s)]))

'''

Expected Results

Cms[0] = 8
Cms[1] = 8
Cms[2] = 0
Cms[3] = 0
Cms[4] = 0
Cms[5] = 0
Cms[6] = 0
Cms[7] = 0

Actual Results

Cms[0] = 22
Cms[1] = 22
Cms[2] = 22
Cms[3] = 24
Cms[4] = 24
Cms[5] = 23
Cms[6] = 23
Cms[7] = 24

Versions

the main branch