Run results for: test collapse strings

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/60.0.3112.113 Safari/537.36

Browser: Chrome 60

Operating system: Mac OS X 10.12.6

Device Platform: Other

Date tested: 7 years ago

Test name	Executions per second
kaushal	108243.6 Ops/sec
jon / andrew	628912.9 Ops/sec
halden	175351.5 Ops/sec
donnie	315665.5 Ops/sec

Script Preparation code:

var test = "a a   sdf   s  d  s d f          s df k sd l l sdlk        sdlf l l sdf sdlf      s dlf   sd f   f  df  f f f  f"
function clean(str) {

var cleanedStr = "";

for (var i = 0; i < str.length; i++) {
let char = str[i];
  let prevChar = str[i - 1];

  if (!(char === " " && prevChar === " ")) {
    cleanedStr += char;
  }
}
return cleanedStr; 
}

function collapseSpaces(str) {
return str.replace(/\s+/g, ' ');
};

function collapseSpacesHalden(s) {
let result = '';
 for (let i = 0; i < s.length; i++) {
 	const c = s.charAt(i);
   result += c;
 	if (c === ' ') {
   	while (i < s.length - 1 && s.charAt(i + 1) === ' ') {
     	i++;
     }
   }
 }
 return result;
}

function collapseSpacesDonnie(str) {
var out = ""
str.split(" ").forEach((c) => {
if (!!c) {
out += c + " "
}
})
return out.trim()
}

Tests:

kaushal
clean(test)
jon / andrew
collapseSpaces(test)
halden
collapseSpacesHalden(test)
donnie
collapseSpacesDonnie(test)

Run results for: test collapse strings

kaushal

jon / andrew

halden

donnie