Created
April 1, 2021 15:05
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const unitNames = { | |
0: 'ZERO', | |
1: 'ONE', | |
2: 'TWO', | |
3: 'THREE', | |
4: 'FOUR', | |
5: 'FIVE', | |
6: 'SIX', | |
7: 'SEVEN', | |
8: 'EIGHT', | |
9: 'NINE', | |
} as Record<number, string> | |
const troubledTeens = { | |
11: 'ELEVEN', | |
12: 'TWELVE', | |
13: 'THIRTEEN', | |
14: 'FOURTEEN', | |
15: 'FIFTEEN', | |
16: 'SIXTEEN', | |
17: 'SEVENTEEN', | |
18: 'EIGHTEEN', | |
19: 'NINETEEN', | |
} as Record<number, string> | |
const tensNames = { | |
10: 'TEN', | |
20: 'TWENTY', | |
30: 'THIRTY', | |
40: 'FOURTY', | |
50: 'FIFTY', | |
60: 'SIXTY', | |
70: 'SEVENTY', | |
80: 'EIGHTY', | |
90: 'NINETY', | |
} as Record<number, string> | |
const chequeLike = (input: number): string => { | |
const inputString = input.toString() | |
const digits = inputString.length | |
if (digits === 3) { | |
const hunderedName = unitNames[inputString[0]] | |
const lastTwoDigits = Number(inputString.substring(1, 3)) | |
if (lastTwoDigits === 0) { | |
return `${hunderedName} HUNDRED` | |
} | |
return `${hunderedName} HUNDRED AND ${belowHundred(lastTwoDigits)}` | |
} | |
return belowHundred(input) | |
} | |
const belowHundred = (input: number): string => { | |
const inputString = input.toString() | |
const digits = inputString.length | |
if (digits === 2) { | |
if (inputString[digits - 1] !== '0') { | |
if (inputString[0] === '1') { | |
return troubledTeens[input] | |
} | |
return ( | |
tensNames[Number(inputString[0]) * 10] + | |
' ' + | |
unitNames[Number(inputString[1])] | |
) | |
} | |
return tensNames[input] | |
} | |
return unitNames[input] | |
} | |
export { chequeLike } |
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import { chequeLike } from './main' | |
// 2 digit numbers | |
// 10 should return “ten” | |
// 14 should return “fourteen” | |
// 20 should return “twenty” | |
// 21 should return “twenty-one” | |
// 56 should return “fifty-six” | |
describe('Cheque', () => { | |
it.each` | |
number | result | |
${0} | ${'ZERO'} | |
${1} | ${'ONE'} | |
${2} | ${'TWO'} | |
${3} | ${'THREE'} | |
${4} | ${'FOUR'} | |
${5} | ${'FIVE'} | |
${6} | ${'SIX'} | |
${7} | ${'SEVEN'} | |
${8} | ${'EIGHT'} | |
${9} | ${'NINE'} | |
${10} | ${'TEN'} | |
${11} | ${'ELEVEN'} | |
${12} | ${'TWELVE'} | |
${13} | ${'THIRTEEN'} | |
${14} | ${'FOURTEEN'} | |
${15} | ${'FIFTEEN'} | |
${16} | ${'SIXTEEN'} | |
${17} | ${'SEVENTEEN'} | |
${18} | ${'EIGHTEEN'} | |
${19} | ${'NINETEEN'} | |
${20} | ${'TWENTY'} | |
${21} | ${'TWENTY ONE'} | |
${30} | ${'THIRTY'} | |
${40} | ${'FOURTY'} | |
${50} | ${'FIFTY'} | |
${60} | ${'SIXTY'} | |
${70} | ${'SEVENTY'} | |
${80} | ${'EIGHTY'} | |
${88} | ${'EIGHTY EIGHT'} | |
${90} | ${'NINETY'} | |
${99} | ${'NINETY NINE'} | |
${100} | ${'ONE HUNDRED'} | |
${132} | ${'ONE HUNDRED AND THIRTY TWO'} | |
${200} | ${'TWO HUNDRED'} | |
${999} | ${'NINE HUNDRED AND NINETY NINE'} | |
`('should return $result when passed $number', ({ number, result }) => { | |
expect(chequeLike(number)).toEqual(result) | |
}) | |
}) |
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