Python 程序：檢查一個數字是不是霓虹數字

編寫一個 Python 程序來檢查一個數字是不是霓虹數字，或者是否使用 while 循環。如果一個數等於平方數位數之和，它就是霓虹數。例如，9 是一個霓虹數字，因為 92 = 81，8 +1 = 9

在這個 python 例子中，首先，我們找到一個數的平方。接下來，把那個正方形分成幾個獨立的數字，求出總和。如果總和等於實際數字，它就是一個霓虹數字。

import math

Number = int(input("Enter the Number to Check Neon Number = "))
Sum = 0

squr = math.pow(Number, 2)
print("Square of a Given Digit = %d" %squr)

while squr > 0:
    rem = squr % 10
    Sum = Sum + rem
    squr = squr // 10

print("The Sum of the Digits   = %d" %Sum)

if Sum == Number:
    print("\n%d is a Neon Number." %Number)
else:
    print("%d is Not a Neon Number." %Number)

Python 程序檢查一個數字是不是 neon 數或者不使用遞歸或者遞歸函數。

# Python Program to Check Neon Number
import math
Sum = 0

def neonNumber(squr):
    global Sum
    if squr > 0:
        rem = squr % 10
        Sum = Sum + rem
        neonNumber(squr // 10)
    return Sum

Number = int(input("Enter the Number to Check Neon Number = "))

squr = math.pow(Number, 2)
print("Square of a Given Digit = %d" %squr)

Sum = neonNumber(squr)
print("The Sum of the Digits   = %d" %Sum)

if Sum == Number:
    print("\n%d is a Neon Number." %Number)
else:
    print("%d is Not a Neon Number." %Number)

Enter the Number to Check Neon Number = 44
Square of a Given Digit = 1936
The Sum of the Digits   = 19
44 is Not a Neon Number.

Enter the Number to Check Neon Number = 9
Square of a Given Digit = 81
The Sum of the Digits   = 9

9 is a Neon Number.

使用 for 循環和 while 循環列印從 1 到 n 的霓虹數字的 Python 程序。

import math

MinNeon = int(input("Please Enter the Minimum Neon Value = "))
MaxNeon = int(input("Please Enter the Maximum Neon Value = "))

for i in range(MinNeon, MaxNeon + 1):
    Sum = 0
    squr = math.pow(i, 2)

    while squr > 0:
        rem = squr % 10
        Sum = Sum + rem
        squr = squr // 10

    if Sum == i:
        print(i, end = '  ')

Please Enter the Minimum Neon Value = 1
Please Enter the Maximum Neon Value = 10000
1  9