1. 給定一個四位數字的集合，能組成多少個互不相同且無重複數字的三位數？各是多少？

def getCombine(lst):
    for i in lst:
        for j in lst:
            for k in lst:
                if (i != k) and (i != j) and (j != k):
                    print i, j, k

2. 一個1000以內的整數，它加上100和加上268後都是一個完全平方數，請問該數是多少？

def completeNum():
    import math
    for
 
 i in range(1000):
        x = int(math.sqrt(i + 100))
        y = int(math.sqrt(i + 268))
        if (x * x == i + 100) and (y * y == i + 268):
            return i

3. 給定一個日期字串（eg：2013-12-31），判斷輸入日期是當年中的第幾天？

def getDayno(dateStr):
    year,month,day = [int(x) for x in dateStr.split('-')]
    months = (0
 
, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334)
    if 0 < month <= 12:
        sum = months[month - 1]
    else:
        raise 'month out of range'
    sum += day
    leap = False

    if (year % 400 == 0) or ((year % 4 == 0) and (year % 100 != 0)):
        leap = True
    if leap and month > 2
 
:
        sum += 1
    return sum