Determine if a string is squeezable: Difference between revisions

=={{header|Go}}==

<lang go>package main

import "fmt"

// Returns squeezed string, original and new lengths in

// unicode code points (not normalized).

func squeeze(s string, c rune) (string, int, int) {

r := []rune(s)

le, del := len(r), 0

for i := le - 2; i >= 0; i-- {

if r[i] == c && r[i] == r[i+1] {

copy(r[i:], r[i+1:])

del++

}

}

if del == 0 {

return s, le, le

}

r = r[:le-del]

return string(r), le, len(r)

}

func main() {

strings := []string{

"",

`"If I were two-faced, would I be wearing this one?" --- Abraham Lincoln `,

"..1111111111111111111111111111111111111111111111111111111111111117777888",

"I never give 'em hell, I just tell the truth, and they think it's hell. ",

" --- Harry S Truman ",

"The better the 4-wheel drive, the further you'll be from help when ya get stuck!",

"headmistressship",

"aardvark",

"😍😀🙌💃😍😍😍🙌",

}

chars := [][]rune{{' '}, {'-'}, {'7'}, {'.'}, {' ', '-', 'r'}, {'e'}, {'s'}, {'a'}, {'😍'}}

for i, s := range strings {

for _, c := range chars[i] {

ss, olen, slen := squeeze(s, c)

fmt.Printf("specified character = %q\n", c)

fmt.Printf("original : length = %2d, string = «««%s»»»\n", olen, s)

fmt.Printf("squeezed : length = %2d, string = «««%s»»»\n\n", slen, ss)

}

}

}</lang>

{{out}}

<pre>

specified character = ' '

original : length = 0, string = «««»»»

squeezed : length = 0, string = «««»»»

specified character = '-'

original : length = 72, string = «««"If I were two-faced, would I be wearing this one?" --- Abraham Lincoln »»»

squeezed : length = 70, string = «««"If I were two-faced, would I be wearing this one?" - Abraham Lincoln »»»

specified character = '7'

original : length = 72, string = «««..1111111111111111111111111111111111111111111111111111111111111117777888»»»

squeezed : length = 69, string = «««..1111111111111111111111111111111111111111111111111111111111111117888»»»

specified character = '.'

original : length = 72, string = «««I never give 'em hell, I just tell the truth, and they think it's hell. »»»

squeezed : length = 72, string = «««I never give 'em hell, I just tell the truth, and they think it's hell. »»»

specified character = ' '

original : length = 72, string = ««« --- Harry S Truman »»»

squeezed : length = 20, string = ««« --- Harry S Truman »»»

specified character = '-'

original : length = 72, string = ««« --- Harry S Truman »»»

squeezed : length = 70, string = ««« - Harry S Truman »»»

specified character = 'r'

original : length = 72, string = ««« --- Harry S Truman »»»

squeezed : length = 71, string = ««« --- Hary S Truman »»»

specified character = 'e'

original : length = 80, string = «««The better the 4-wheel drive, the further you'll be from help when ya get stuck!»»»

squeezed : length = 79, string = «««The better the 4-whel drive, the further you'll be from help when ya get stuck!»»»

specified character = 's'

original : length = 16, string = «««headmistressship»»»

squeezed : length = 14, string = «««headmistreship»»»

specified character = 'a'

original : length = 8, string = «««aardvark»»»

squeezed : length = 7, string = «««ardvark»»»

specified character = '😍'

original : length = 8, string = «««😍😀🙌💃😍😍😍🙌»»»

squeezed : length = 6, string = «««😍😀🙌💃😍🙌»»»

</pre>