func writeConcurrent(cMap concurrentmap.ConcurrentMap, threads int, threadID int, done chan int64) {
start := time.Now().UnixNano()
numWrites := numberOfTests / threads
for i := numWrites * threadID; i < numWrites*(threadID+1); i++ {
s := strconv.Itoa(i)
cMap.Put(s, s)
}
end := time.Now().UnixNano()
done <- end - start
return
}
