Answer to Question #321185 in Python for INTERLEAVE STRING

Question

Interleave String

Given two strings, write a program to merge the given two strings by adding characters in alternating order, starting with the first string. If a string is longer than the other, append the additional characters onto the end of the merged string.

input

the first line of input will containing a string.

the second line of input will containing a string.

the strings may contain special characters ,digits and string.

output

the output should be the merged string

explanation

For example, if the given strings are "abc" and "pqrs", then alternating characters from each string are merged as "a" from "abc", "p" from "pqr" "b" from "abc" and so on ...., resulting in the merged string "apbqcr".

sample input 1

abc

pqr

sample output 1

apbqcr

sample input 2

abc

pqrst

sample output 2

apbqcrst

Answer 1

first_line = input("Enter the first line: ")
second_line = input("Enter the second line: ")
result_line = ''
k_f = 0
k_s = 0
for i in range(0, len(first_line) + len(second_line)+2, 2):
    if k_f <= len(first_line)-1:
        result_line += first_line[k_f]
    if k_s <= len(second_line)-1:
        result_line += second_line[k_s]
    k_f += 1
    k_s += 1
print(result_line)