Introduction

Solve Programming Questions | HackerRankHackerRank

Matching Specific String

You have a test string S. Your task is to match the string hackerrank. This is case sensitive.

hackerrank

---

Matching Anything But a Newline

You have a test string S. Your task is to write a regular expression that matches only and exactly strings of form: abc.def.ghi.jkx, where each variable a,b,c,d,e,f,g,h,i,j,k,x can be any single character except the newline.

^...\....\....\....$

---

Matching Digits & Non-Digit Characters

You have a test string S. Your task is to match the pattern xxXxxXxxxx .Here x denotes a digit character, and X denotes a non-digit character.

\d{2}\D\d{2}\D\d{4}

---

Matching Whitespace & Non-Whitespace Characters

You have a test string S. Your task is to match the pattern XXxXXxXX. Here, x denotes whitespace characters, and X denotes non-white space characters.

\S{2}\s\S{2}\s\S{2}

---

Matching Word & Non-Word Character

You have a test string S. Your task is to match the pattern xxxXxxxxxxxxxxXxxx. Here x denotes any word character and X denotes any non-word character.

\w{3}\W\w{10}\W\w{3}

---

Matching Start & End

You have a test string S. Your task is to match the pattern Xxxxx. Here, x denotes a word character, and X denotes a digit. S must start with a digit X and end with . symbol. S should be 6 characters long only.

^\d\w{4}\.$