编写一个 Python 程序来计算数组中的正数和负数,用于循环范围。if 条件(if(posnegarar[I]> = 0))检查数组项是否大于或等于零。如果为真,我们在正数组计数上加一;否则,将负数组计数加 1。
# Count Positive and Negative in Array
import numpy as np
posNegaArr = np.array([1, -19, -22, 16, -76, 0, 22, 50, -122, 70])
print("posNegaArr Array = ", posNegaArr)
posArrCount = 0
negArrCount = 0
for i in range(len(posNegaArr)):
if (posNegaArr[i] >= 0):
posArrCount = posArrCount + 1
else:
negArrCount = negArrCount + 1
print("The Count of Positive Numbers in posNegaArr Array = ", posArrCount)
print("The Count of Negative Numbers in posNegaArr Array = ", negArrCount)
计算数组中正数和负数的 Python 程序
在这个 Python 示例中,我们使用 for 循环来迭代实际值,而不是索引位置。在第二个 for 循环中,numpy greater_equal 函数检查特定 numpy 数组项是否大于或等于零并返回 True。
# Count Positive and Negative in Array
import numpy as np
posNegaArr = np.array([4, 25, -9, 8, -6, -7, 0, 11, -17, 6, -44, 89])
posArrCount = posArrCount1 = 0
negaArrCount = negaArrCount1 = 0
for i in posNegaArr:
if (i >= 0):
posArrCount = posArrCount + 1
else:
negaArrCount = negaArrCount + 1
print("The Count of Positive Numbers in evennegaArr Array = ", posArrCount)
print("The Count of Negative Numbers in evennegaArr Array = ", negaArrCount)
print("\n=== Using greater_equal function===")
for i in posNegaArr:
if (np.greater_equal(i, 0) == True):
posArrCount1 = posArrCount1 + 1
else:
negaArrCount1 = negaArrCount1 + 1
print("The Count of Positive Numbers in evennegaArr Array = ", posArrCount1)
print("The Count of Negative Numbers in evennegaArr Array = ", negaArrCount1)
计算 Python Numpy 数组中的正数和负数,用于循环输出
The Count of Positive Numbers in evennegaArr Array = 7
The Count of Negative Numbers in evennegaArr Array = 5
=== Using greater_equal function===
The Count of Positive Numbers in evennegaArr Array = 7
The Count of Negative Numbers in evennegaArr Array = 5
Python 程序使用 While 循环计算 Numpy 数组中的正数和负数。
# Count Positive and Negative in Array
import numpy as np
posNegArr = np.array([418, -22, -33, 0, -89, -56, 11, -99])
i = 0
posArrCount = 0
negArrCount = 0
while (i < len(posNegArr)):
if (np.greater_equal(posNegArr[i], 0) == True):
posArrCount = posArrCount + 1
else:
negArrCount = negArrCount + 1
i = i + 1
print("The Count of Positive Numbers in posNegArr Array = ", posArrCount)
print("The Count of Negative Numbers in posNegArr Array = ", negArrCount)
使用 while 循环输出 计算正负 Python Numpy 数组项目
The Count of Positive Numbers in posNegArr Array = 3
The Count of Negative Numbers in posNegArr Array = 5
在这个 Python numpy 数组的例子中,我们创建了一个函数(countevenodnumbers(posNegArr)),返回正数和负数的计数。
# Count Positive and Negative in Array
import numpy as np
def CountEvenOddNumbers(posNegArr):
posArrCount = 0
negArrCount = 0
for i in posNegArr:
if (np.greater_equal(i, 0) == True):
posArrCount = posArrCount + 1
else:
negArrCount = negArrCount + 1
return posArrCount, negArrCount
posNegArr = np.array([6, -9, -11, 8, 0, -14, -16, -9, 1])
positive, negative = CountEvenOddNumbers(posNegArr)
print("The Count of Positive Numbers in posNegArr Array = ", positive)
print("The Count of Negative Numbers in posNegArr Array = ", negative)
The Count of Positive Numbers in posNegArr Array = 4
The Count of Negative Numbers in posNegArr Array = 5