Test case not getting clear

#1
#2


this else part should come outside

mid=(s+e)/2

#3

i hope this help
if you have more doubts regarding this feel free to ask
if your doubt is resolved mark it as resolved from your doubt section inside your course

#4

i hope this help

if you have more doubts regarding this feel free to ask
if your doubt is resolved mark it as resolved from your doubt section inside your course