Copy Editor: A RegEx Puzzle – All Stars Solutions

 
 

Levels

 

Level 01

 

Fewest Rules

 

1. /have/g => had 
2. /is\b/g => was 
3. /are/g => were

Fewest Chars

 

1. /have/g => had 
2. /is\b/g => was 
3. /are/g => were

---

 

Level 02

 

Fewest Rules

 

1. /man/g => woman 
2. /\bhe/g => she 
3. /(H|h)is\s(?=s|t|b)/g => $1er

Fewest Chars

 

1. /man/g => woman 
2. /\bhe/g => she 
3. /(H|h)is\s(?=s|t|b)/g => $1er

---

 

Level 03

 

Fewest Rules

 

1. /\s+\d:\d+/g =>

Fewest Chars

 

1. /\s+\d:\d+/g =>

---

 

Level 04

 

Fewest Rules

 

1. /\d\s{0,5}\d/g => 11 
2. /H|\d/g => B

Fewest Chars

 

1. /\d\s{0,5}\d/g => 11 
2. /H|\d/g => B

---

 

Level 05

 

Fewest Rules

 

1. /(J\w+)/g => $1_RomeoROMEO 
2. /\b(Romeo|ROMEO)/g => $1_JulietJULIET 
3. /\b[A-Z]+_[A-Z][a-z]+(\w+)/g => $1 
4. /\b[A-Z][a-z]+_([A-Z][a-z]+)(\w+)/g => $1

Fewest Chars

 

1. /Juliet/g => Rom_eo 
2. /JULIET/g => ROM_EO 
3. /Romeo/g => Juliet 
4. /ROMEO/g => JULIET 
5. /_/g =>

---

 

Level 06

 

Fewest Rules

 

1. /\bhate/g => love 
2. /(bad|terrible)\b/g => good 
3. /n\saw/g => wonder 
4. /badly/g => well 
5. /(had|was)\s(?!n)/g => $1 not

Fewest Chars

 

1. /\bhate/g => love 
2. /(bad|terrible)\b/g => good 
3. /n\saw/g => wonder 
4. /badly/g => well 
5. /(had|was)\s(?!n)/g => $1 not

---

 

Level 07

 

Fewest Rules

 

1. /(\d+)\d\d/g => $1 
2. /(?<=\w)A(?=[a-z]?)|A(?=nd\b)/g => a

Fewest Chars

 

1. /(.+)\d\d/g => $1 
2. /\BA/g => a 
3. /And\b/g => and

---

 

Level 08

 

Fewest Rules

 

1. /Xh?\w*/g => (censored)

Fewest Chars

 

1. /Xh?\w*/g => (censored)

---

 

Level 09

 

Fewest Rules

 

1. /([a-zA-Z])|(\s[23]\w+,)/g =>

Fewest Chars

 

1. /[a-zA-Z]/g =>  
2. /\s[23]\w+,/g =>

---

 

Level 10

 

Fewest Rules

 

1. /\s+/g =>  
2. /e+(?!k)/g => e 
3. /s+/g => s 
4. /o+(?!k)/g => o

Fewest Chars

 

1. /\s+/g =>  
2. /e+(?!k)/g => e 
3. /s+/g => s 
4. /o+(?!k)/g => o

---

 

Level 11

 

Fewest Rules

 

1. /\(.+?\)/g =>

Fewest Chars

 

1. /\(.+?\)/g =>

---

 

Level 12

 

Fewest Rules

 

1. /X|or(?=or)|that.(?=t)|erase\s|point\s|au.+c\s/g =>

Fewest Chars

 

1. /X|or(?=or)|that.(?=t)|erase\s|point\s|au.+c\s/g =>

---

 

Level 13

 

Fewest Rules

 

1. /(nce|ye|gin|nk|ler)/g => $1s 
2. /(tur\b|rm\b)/g => $1ed

Fewest Chars

 

1. /(nce|ye|gin|nk|ler)/g => $1s 
2. /(tur\b|rm\b)/g => $1ed

---

 

Level 14

 

Fewest Rules

 

1. /(c.+\.).+(b.+ng).+(re.+g).(b.+s).+/g => I follow $4, $3 the order, $2 where he $1

Fewest Chars

 

1. /(c.+\.).+(b.+ng).+(re.+g).(b.+s).+/g => I follow $4, $3 the order, $2 where he $1

---

 

Level 15

 

Fewest Rules

 

1. /(.)(.).{5}(.)..(.).(.).{10}(.).+/g => $1$5$3 $2$6$2$4!

Fewest Chars

 

1. /(.)(.).{5}(.)..(.).(.).{10}(.).+/g => $1$5$3 $2$6$2$4!

---

 

Level 16

 

Fewest Rules

 

1. /\b(\d{1,2})\./g => 00$1. 
2. /\b(\d+)(\d\d)\.?\d*/g => $1.$2 
3. /\s00/g => 0

Fewest Chars

 

1. /\b(\d{1,2})\./g => 00$1. 
2. /\b(\d+)(\d\d)\.?\d*/g => $1.$2 
3. /\s00/g => 0

---

 

Level 17

 

Fewest Rules

 

1. /D.+?ng.(.+?)\s(I.+)/g => $2$1

Fewest Chars

 

1. /D.+?ng.(.+?)\s(I.+)/g => $2$1

---

 

Level 18

 

Fewest Rules

 

1. /([^A-df-z\s])(n?a?t?|qu|tabl)([h-j])/g => $3$2$1

Fewest Chars

 

1. /([^A-df-z\s])(n?a?t?|qu|tabl)([h-j])/g => $3$2$1

---

 

Level 19

 

Fewest Rules

 

1. /((^\w+|(?<=\n)\w+)@\w+\.(net|com?|edu|org))\n/g => $1 REAL\n

Fewest Chars

 

1. /((^\w+|(?<=\n)\w+)@\w+\.(net|com?|edu|org))\n/g => $1 REAL\n

---

 

Level 20

 

Fewest Rules

 

1. /\*(.+?)\./g => \n ($1) 
2. /(?<!\()(L.+?|S.+?|J.+?|Oe.+?s)\s([A-Z’])/g => \n\n $1\n$2 
3. /^\n\n/g =>  
4. /\sY/g => \nY

Fewest Chars

 

1. /\*(.+?)\./g => \n ($1) 
2. /(?<!\()(L.+?|S.+?|J.+?|Oe.+?s)\s([A-Z’])/g => \n\n $1\n$2 
3. /^\n\n/g =>  
4. /\sY/g => \nY

 
 

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