# Python Challenge - Find Xth Number In Order

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def getX(x, nums): if not nums or len(nums) < x: return 0 nums.sort() return nums[x-1] print(getX(2, [6, 3, -1, 5]))
1 Like

all u gotta do is first check if there is nothing in the list or if the x is greater than the list if so then return 0
if not then just sort the list and return the the number in the list index - 1

def getX(x, nums): # write your code here if x > len(nums) or len(nums) == 0: return 0 nums.sort() return nums[x-1] #print(getX(2, [6, 3, -1, 5])) print(getX(4, [5, 10, -3 , -3, 7, 9]))
1 Like
def getX(x, nums): if x > len(nums) or len(nums) < 1: return 0 nums.sort() return nums[x-1] print(getX(2, [6, 3, -1, 5]))
def getX(x, nums) : if x > len(nums) or len(nums) == 0 : return 0 #sorting list nums.sort() for count, element in enumerate(nums,1) : if x == count : return element print(getX(2, [6, 3, -1, 5]))

def getX(x, nums):
nums.sort()
if len(nums) <= 0 or abs(x) > len(nums) or type(x) != int:
return 0
else:
return nums[x-1]
print(getX(2, [6, 3, -1, 5]))

def getX(x, nums): nums.sort() if len(nums) <= 0 or abs(x) > len(nums) or type(x) != int: return 0 else: return nums[x-1] print(getX(2, [6, 3, -1, 5]))
def getX(x, nums): # write your code here if x > len(nums) or len(nums) == 0: return 0 nums = sorted(nums) return nums[x-1] print(getX(2, [6, 3, -1, 5])) print(getX(4, [5, 10, -3 , -3, 7, 9])) print(getX(2, [5, 10, -3, -3, 7, 9]))

def getX(x, nums):
nums.sort()
try:
return (nums[x-1])
except:
return 0
print(getX(5, [6, 3, -1, 5]))

def getX(x,nums):
if x>len(nums) or not len(nums):
return 0
else:
nums.sort()
return (nums[x-1])

print(getX(2,[6, 3, -1, 5]))

def getX(x, nums):
return sorted(nums)[x-1] if x in range(1,len(nums)+1) else 0

print(getX(2, [6, 3, -1, 5]))

Here’s how I thought of doing it:
Is it better to have more readable code or more concise code?

def getX(x, nums):
snums = sorted(nums)
try:
return snums[x-1]
except:
return 0

print(getX(2, [6, 3, -1, 5])

``````def getX(x, nums):
try:
return sorted(nums)[x-1]
except:
return 0

print(getX(2, [6, 3, -1, 5]))
``````
1 Like

def getX(x, nums):
count = int(len(nums))
if x > count or nums == :
return 0
else:
for i in range(count):
for j in range(count):
if nums[i] < nums[j]:
nums[i],nums[j]=nums[j],nums[i]
return nums[x-1]

print(getX(7, [6, 3, -1, 5,8,9,-10,7,8,45,34,13,34]))

I used Error Checking to figure out if the position was invalid

def getX(x, nums): nums.sort() try: return(nums[x - 1]) except IndexError: return(0) print(getX(2, [6, 3, -1, 5]))
``````def getX(x, nums):
nums.sort()
if x > len(nums) or len(nums)== 0:
return 0
else:
return nums[x-1]

print(getX(2, [6, 3, -1, 5]))
``````

Hey there seems to be a problem with my code but I can’t find it since all the tests I did went without any problems. But when I press the Test Code Button in the challenge it always gives me the following error message: ‘Tests failed to run due to an error: “list index out of range”. Check your code and try again.’.
If anyone can find the problem I would be very thankful if you’d share it with me.

Also I did some calculations and the runtime should be on average at least 2O(n) = O(n). Which should in theory be a better runtime than the sort function. But I’m also not quite sure about that so if someone wants to also check that I would be even more thankful.

``````def getX(x, nums):
smaller = []
bigger = []
for j in range(len(nums)):
#split in two arrays one with smaller numbers than nums[0] one with bigger
for i in range(1,len(nums)):
if nums[0] >= nums[i]:
smaller.append(nums[i])
elif nums[0] < nums[i]:
bigger.append(nums[i])
# if len(smaller) == x-1 we found our number otherwise replace nums with either smaller
#or bigger depending on the size of them and x.
if len(smaller) == x - 1:
return nums[0]
elif len(smaller) > x - 1:
nums = smaller
elif len(smaller) < x:
nums = bigger
x = x - (len(smaller) + 1)
smaller = []
bigger = []

``````
``````def getX(x, nums):
if x > len(nums) or len(nums) == 0:
return 0
else:
nums.sort()
return nums[x-1]
print(getX(2, [6, 3, -1, 5]))
``````
def getX(x, nums): nums.sort() x=x-1 if(x<=len(nums)-1 and x>=0): return nums[x] else: return 0 print(getX(4, [5, 10, -3, -3, 7, 9]))
def getX(x, nums): # write your code here if x>len(nums) or len(nums)==0: return 0 else: nums.sort() return nums[x-1] print(getX(2, [6, 3, -1, 5]))

This solution uses Python’s built in sort() function for lists, whose time complexity is about n log n. The space complexity, however, is n. Given that the problem emphasizes time over space, this would be the ideal solution for time and simplicity, in my opinion.

def getX(x, nums):
if x > len(nums) or nums == :
return 0
nums.sort()
return nums[x - 1]