Merge Strings Alternatively👇👇
1768. Merge Strings Alternately
You are given two strings word1
and word2
. Merge the strings by adding letters in alternating order, starting with word1
. If a string is longer than the other, append the additional letters onto the end of the merged string.
Return the merged string.
Example 1:
Input: word1 = "abc", word2 = "pqr"
Output: "apbqcr"
Explanation: The merged string will be merged as so:
word1: a b c
word2: p q r
merged: a p b q c r
Example 2:
Input: word1 = "ab", word2 = "pqrs"
Output: "apbqrs"
Explanation: Notice that as word2 is longer, "rs" is appended to the end.
word1: a b
word2: p q r s
merged: a p b q r s
Example 3:
Input: word1 = "abcd", word2 = "pq"
Output: "apbqcd"
Explanation: Notice that as word1 is longer, "cd" is appended to the end.
word1: a b c d
word2: p q
merged: a p b q c d
Python Solution : (python3 , python) #Two pointer approach
class Solution:
def mergeAlternately(self, word1: str, word2: str) -> str:
merge = ""
i = 0
j = 0
while(i<len(word1) or j <len(word2)):
if(i<len(word1)):
merge += word1[i]
i += 1
if(j <len(word2)):
merge += word2[j]
j += 1
return merge
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