Discussion on Alternating Characters Challenge

Sort by

recency

|

1968 Discussions

|

1 week ago+ 0 comments

def alternatingCharacters(s):

    # Write your code here
deletions=0
for i in range(1,len(s)):
    if s[i-1]==s[i]:
        deletions+=1
return deletions

2 weeks ago+ 0 comments

Here are my c++ approaches of solving this, video explanation here : https://youtu.be/KoDlxS38_ig

Solution 1 : Using loop

int alternatingCharacters(string s) {
    int result = 0;
    for(int i = 1; i < s.size(); i++) if(s[i] == s[i-1]) result++;
    return result;
}

Solution 2 : Using regex

int alternatingCharacters(string s) {
    regex re("A{2,}|B{2,}");
    return s.size() - regex_replace(s, re, "*").size();
}

2 weeks ago+ 0 comments

Here is my one line Python solution!

def alternatingCharacters(s):
    return len([True for i in range(1, len(s)) if s[i] == s[i - 1]])

1 month ago+ 1 comment

PYTHON CODE

def alternatingCharacters(s):
    # Write your code here
    d=0
    sl=list(s)
    for i in range(0, len(sl)-1):
        if sl[i]==sl[i+1]:
            d+=1
    return d

View Thread

1 month ago+ 0 comments

python MyAnswer

def alternatingCharacters(s): i=0 j=1 count=0 while i

Sort by

|

1968 Discussions

|

Cookie support is required to access HackerRank

Please signup or login in order to view this challenge