Run results for: romumerals

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) Gecko/20100101 Firefox/74.0

Browser: Firefox 74

Operating system: Windows

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
lutswitch	73642.7 Ops/sec
tcl	52122.7 Ops/sec

Tests:

lutswitch
let randomInputs = []; for( let i = 0; i < 16; i+=4) { randomInputs[i] = Math.random().toString(10).substring(2, 3); randomInputs[i+1] = Math.random().toString(10).substring(2, 4); randomInputs[i+2] = Math.random().toString(10).substring(2, 5); randomInputs[i+3] = Math.random().toString(10).substring(2, 6); } function toRomanNumeralsLUTswitch(numberString) { // Group symbols by "exponent" const lut = [ ['', 'I', 'II', 'III', 'IV', 'V', 'VI', 'VII', 'VIII', 'IX'], // E0 ['', 'X', 'XX', 'XXX', 'XL', 'L', 'LX', 'LXX', 'LXXX', 'XC'], // E1 ['', 'C', 'CC', 'CCC', 'CD', 'D', 'DC', 'DCC', 'DCCC', 'CM'], // E2 // ['M'] // E3 ]; const digitCount = numberString.length - 1; let roman = ''; for (let i = 0; i <= digitCount; i++) { const exponent = digitCount - i; switch(exponent){ case 0: case 1: case 2: roman += lut[exponent][numberString[i]]; break; } } // Bundle all digits above E2 if ( digitCount >= 3) { roman = 'M'.repeat(numberString.slice(0,-3)) + roman; } return roman; } for ( const input of randomInputs ) { toRomanNumeralsLUTswitch(input); }
tcl
let randomInputs = []; for( let i = 0; i < 16; i+=4) { randomInputs[i] = Math.random().toString(10).substring(2, 3); randomInputs[i+1] = Math.random().toString(10).substring(2, 4); randomInputs[i+2] = Math.random().toString(10).substring(2, 5); randomInputs[i+3] = Math.random().toString(10).substring(2, 6); } var romantcl = { map: [ 1000, 'M', 900, 'CM', 500, 'D', 400, 'CD', 100, 'C', 90, 'XC', 50, 'L', 40, 'XL', 10, 'X', 9, 'IX', 5, 'V', 4, 'IV', 1, 'I', ], int_to_roman: function(n) { var value = ''; for (var idx = 0; n > 0 && idx < this.map.length; idx += 2) { while (n >= this.map[idx]) { value += this.map[idx + 1]; n -= this.map[idx]; } } return value; } } for ( const input of randomInputs ) { romantcl.int_to_roman(input); }

Run results for: romumerals

lutswitch

tcl