python - 基础算法题4 - 计算1-2+3-4...-100
count=1 middle=1 while count<=100: if count%2==0: middle=-1 else: middle=1 count++ sum+=(middle*count) print(sum)
count=1 middle=1 while count<=100: if count%2==0: middle=-1 else: middle=1 count++ sum+=(middle*count) print(sum)