Question

E.g. I want to match string with the same word at the end as at the begin, so that following strings match:

aaa dsfj gjroo gnfsdj riier aaa
sdf foiqjf skdfjqei  adf sdf sdjfei sdf
rew123 jefqeoi03945  jq984rjfa;p94  ajefoj384 rew123

Answer 1

This one could do te job:

/^(\w+\b).*\b\1$/

explanation:

/           : regex delimiter
  ^         : start of string
    (       : start capture group 1
      \w+   : one or more word character
      \b    : word boundary
    )       : end of group 1
    .*      : any number of any char
    \b      : word boundary
    \1      : group 1
  $         : end of string
/           : regex delimiter