CODEWITHSUNDEEP
pythonstringlistduplicates
Aakib Shaikh
Aakib Shaikh

Reputation: 1

To Remove consecutive vowels from string

Here I want to remove any vowels which repeat consecutively. But it shows error as "list out of index".

So I tried break if last element in list is reached, but still won't work.

Here is the code I tried:-

a=[]

b=str(input("enter the string"))

a=b.split(',')

c=['a','e','i','o','u']

for i in c:

    for j in range(0,len(a)):

        if (a[j+1] == a[len(a)]) is True:

            break;

        elif ((a[j] == a[j+1]) & (a[j+1] == i)) is True:

                del[j]
e.join(a)

print(e)

Please show me how to solve this problem, or any other problem if in there.

Upvotes: 0

Views: 4092

Answers (6)

sandra siva
sandra siva

Reputation: 1

t=input()
st=""
vow=['a','e','i','o','u']
st+=t[0]
for i in range(1,len(t)):
  if(t[i].lower() in vow):
    if(t[i-1].lower() not in vow and i-1>=0):
      st+=t[i]
  else:
     st+=t[i]
print(st)

Upvotes: 0

user11844902
user11844902

Reputation:

I edited it to suit you:

result=original.replace('a','').replace('e',''),replace('i','').replace('o','').replace('u','')

original is your input string and result is your output string.

Upvotes: 0

Thomas
Thomas

Reputation: 72

You can do it this way:

a=[]

b=str("a,a,a,b,e,e,e,c,x,d")

a=b.split(',')

c=['a','e','i','o','u']
j = 0
for i in c:
  while j < len(a)-1:
      if a[j] == a[j+1] and a[j] == i:
          del a[j]
      else:
          j = j+1
  j=0

Use a while loop to check through the list and delete consecutive duplicates. Then reset the the while loop back to zero and run through the list again.

Using a for loop will not work,if you are deleting items in the list that is being used to iterate over.

b=str("a,a,a,b,e,e,e,c,x,d") was just used to test the code. To print the results you can just do print(a) it will print the list out.

I used this Stack Overflow post as reference.

Upvotes: 0

Hector Of The Rose
Hector Of The Rose

Reputation: 98

First detail is this: if (a[j+1] == a[len(a)]) is True: from what I understood this is to break the code when it is necessary. But that is completely unnecessary. Instead you should fix the number of iterations in the beginning, which should be for j in range(0,len(a)-1):

Another problem is that you aren't really iterating through the letters, just each comma separated phrases. If you put "Hello, World" you aren't checking the letters, you check "Hello" and " World". You might as well remove b and let a just be the raw input.

Since a would then be a string, to erase the i-th letter of a string you can use the function below.

def remove_jth(word, j):
    word = word[:j] + word[j+1:]

Finally since you are using range, it will build a "list" that has the size len(a) when you start the for, but as you remove vowels, the length of a gets shorter and the range you had at the beginning will be to much. If you fix all of these things you should have it right

Upvotes: 0

mad_
mad_

Reputation: 8273

How about maintaining a stack for consecutive vowels? whenever you see non-vowel string re-initialize the stack list and when you see vowels but are not consecutive you just add to the final list 

stack=[]
new_list=[]
vowel=['a','i','o','u','e']
for i in your_string: # replace your string with actual string
    if i not in vowel:
        if len(stack) == 1:
            new_list.append(stack[0])
        new_list.append(i)
        stack = []
    else:
        stack.append(i)
if len(stack) == 1:
    new_list.append(stack[0])

Upvotes: 1

Chrismon Chin
Chrismon Chin

Reputation: 429

You get a list out of index error because you are indexing at a value not in a

if (a[j+1] == a[len(a)]) is True:

a[len(a)] does not exist, arrays are zero indexed so they start from 0. An array with 5 items has index 0,1,2,3,4

the line should be:

if (a[j+1] == a[len(a) - 1]) is True:

Also 'is True' is redundant, so further refined:

if a[j+1] == a[len(a) - 1]:

Also is del[j] an error? should it be del a[j]? If this is the case, the program will run into further errors as you are iterating over the entire Original size of the array but deleting values during this iteration, so it will look for items that no longer exist.

Upvotes: 0

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