python practice.py - from future import annotations from...

from __future__ import annotations
from collections import Counter
from operator import itemgetter
import string
import itertools as it
def swapVowels(s):
s = list(string)
vpos = []
vchar = []
for idx, char in enumerate(s):
if char.lower() in ("a", "e", "i", "o", "u"): # or `if first in 'aeiou'`
vpos.append(idx)
vchar.append(char)
for i in vpos:
s[i] = vchar.pop() # element at s[i] is replaced with the last vowel
contained in vchar
return "".join(s)
string1 = "leetcode"
print(swapVowels(string))
# Can we construct ransom note from magazine?
ransomNote = "aa"
magazine = "aab"
# Check to see if all items in ransomNote are contained in magazine
# Reads like: For each i in ransomNote, is i contained in magazine
# all(i in magazine for i in ransomNote)
# counter1 = Counter(ransomNote)
# counter2 = Counter(magazine)
# not counter1 - counter2
s = "loveleetcode"
def find_first_non_repeating_char(s):
alpha = string.ascii_lowercase
index = [s.index(l) for l in alpha if s.count(l) == 1]
return min(index) if len(index) > 0 else -1
# def running_sum(lis):
# running_sum = 0
# sums = [None] * len(lis)
# for indx, val in enumerate(lis):
# running_sum += val