first unique character in a string python
class Solution(object):
def firstUniqChar(self, s):
"""
:type s: str
:rtype: int
"""
frequency = {}
for i in s:
if i not in frequency:
frequency[i] = 1
else:
frequency[i] +=1
for i in range(len(s)):
if frequency[s[i]] == 1:
return i
return -1
ob1 = Solution()
print(ob1.firstUniqChar("people"))
print(ob1.firstUniqChar("abaabba"))First non repeating character position in a string
# First non repeating character position in a string
def first_non_repeating_letter(str)
strL = str.downcase
strL.each_char.with_index do |v, i|
if strL.index(v) == strL.rindex(v)
return i
end
end
-1
end
print "First non repeating character position = ",
first_non_repeating_letter("abcdcba"); # 3Copyright © 2021 Codeinu
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