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October 4, 2018 19:59
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Calculate the an adidas size code by using real life sizes from different regions
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function calculateSizeCode(size, type){ | |
switch(type){ | |
case 'USM': | |
return size * 20 + 530 - 80; | |
break; | |
case 'USF': | |
return size * 20 + 530 - 100; | |
break; | |
case 'UK': | |
return size * 20 + 530 - 70; | |
break; | |
case 'EU': | |
const calc = size * 15 + 530 - 36 * 15; | |
if(calc / 10 % 1 === 0){ | |
return calc; | |
} | |
return ((calc + 0.5) / 10 % 1 !== 0 ? calc - 0.5 : calc + 0.5); | |
break; | |
} | |
} | |
function calculateSize(sizeCode, type){ | |
switch(type){ | |
case 'USM': | |
return 4 + (sizeCode - 530) / 20; | |
break; | |
case 'USF': | |
return 5 + (sizeCode - 530) / 20; | |
break; | |
case 'UK': | |
return 3.5 + (sizeCode - 530) / 20; | |
break; | |
case 'EU': | |
return Math.round((36 + (sizeCode - 530) * 2 / 30) * 10) / 10; | |
break; | |
} | |
} | |
/* example: calculateSizeCode(11, 'USM') = 670 | |
calculateSizeCode(39.3, 'EU') = 580 | |
calculateSizeCode(40, 'EU') = 590 | |
calculateSizeCode(44.7, 'EU') = 660 | |
calculateSizeCode(10.5, 'UK') = 670 | |
calculateSizeCode(39.5, 'EU') = 582 (not a valid size code, size 39.5 does not exist) | |
calculateSizeCode(10.2, 'UK') = 664 (not a valid size code, size 10.2 does not exist) */ |
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