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Determine if a string is collapsible: Difference between revisions
Determine if a string is collapsible (view source)
Revision as of 16:39, 15 December 2019
, 4 years agoAdded Rust implementation.
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(Added Rust implementation.) |
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length= 17 output=««« - Hary S Truman »»»
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</pre>
=={{header|Rust}}==
<lang rust>fn collapse_string(val: &str) -> String {
let mut output = String::new();
let mut chars = val.chars().peekable();
while let Some(c) = chars.next() {
while let Some(&b) = chars.peek() {
if b == c {
chars.next();
} else {
break;
}
}
output.push(c);
}
output
}
fn main() {
let tests = [
"122333444455555666666777777788888888999999999",
"",
"\"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",
];
for s in &tests {
println!("Old: {:>3} <<<{}>>>", s.len(), s);
let collapsed = collapse_string(s);
println!("New: {:>3} <<<{}>>>", collapsed.len(), collapsed);
println!();
}
}</lang>
{{out}}
<pre>
Old: 45 <<<122333444455555666666777777788888888999999999>>>
New: 9 <<<123456789>>>
Old: 0 <<<>>>
New: 0 <<<>>>
Old: 72 <<<"If I were two-faced, would I be wearing this one?" --- Abraham Lincoln >>>
New: 70 <<<"If I were two-faced, would I be wearing this one?" - Abraham Lincoln >>>
Old: 72 <<<..1111111111111111111111111111111111111111111111111111111111111117777888>>>
New: 4 <<<.178>>>
Old: 72 <<<I never give 'em hell, I just tell the truth, and they think it's hell. >>>
New: 69 <<<I never give 'em hel, I just tel the truth, and they think it's hel. >>>
Old: 72 <<< --- Harry S Truman >>>
New: 17 <<< - Hary S Truman >>>
Old: 80 <<<The better the 4-wheel drive, the further you'll be from help when ya get stuck!>>>
New: 77 <<<The beter the 4-whel drive, the further you'l be from help when ya get stuck!>>>
Old: 16 <<<headmistressship>>>
New: 14 <<<headmistreship>>>
</pre>
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