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🗺️ added challenge 25: calculating distances
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| export function travelDistance (map: string): number { | ||
| const positions: Record<string, [number, number]> = {} | ||
| for (const [rowIndex, row] of map.split('\n').entries()) { | ||
| for (const [colIndex, col] of row.replace('S', '0').split('').entries()) { | ||
| if (/[\d|S]/.test(col)) { | ||
| positions[col] = [rowIndex, colIndex] | ||
| } | ||
| } | ||
| } | ||
| let ans = 0 | ||
| for (const x of Object.keys(positions)) { | ||
| if (x === '0') { | ||
| continue | ||
| } | ||
| const [currentRow, currentCol] = positions[x] | ||
| const [prevRow, prevCol] = positions[+x - 1] | ||
| ans += Math.abs(currentRow - prevRow) | ||
| ans += Math.abs(currentCol - prevCol) | ||
| } | ||
| return ans | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,67 @@ | ||
| import { test, expectTypeOf, expect, describe } from 'vitest' | ||
| import { travelDistance } from '../challenges/25' | ||
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| describe('Challenge #25', () => { | ||
| test('Test #01', () => { | ||
| expectTypeOf(travelDistance).returns.toEqualTypeOf(0) | ||
| }) | ||
|
|
||
| test('Test #02', () => { | ||
| const received = travelDistance( | ||
| `.....1.... | ||
| ..S....... | ||
| .......... | ||
| ....3..... | ||
| ......2...`) | ||
| const expected = 12 | ||
| expect(received).toEqual(expected) | ||
| }) | ||
|
|
||
| test('Test #03', () => { | ||
| const received = travelDistance('..S.1...') | ||
| const expected = 2 | ||
| expect(received).toEqual(expected) | ||
| }) | ||
|
|
||
| test('Test #04', () => { | ||
| const received = travelDistance( | ||
| `.....2.... | ||
| ..S....... | ||
| .......... | ||
| ....1..... | ||
| ......3...` | ||
| ) | ||
| const expected = 13 | ||
| expect(received).toEqual(expected) | ||
| }) | ||
|
|
||
| test('Test #05', () => { | ||
| const received = travelDistance( | ||
| `3....1.... | ||
| ..S....... | ||
| .........2 | ||
| .......... | ||
| ......4...` | ||
| ) | ||
| const expected = 31 | ||
| expect(received).toEqual(expected) | ||
| }) | ||
|
|
||
| test('Test #06', () => { | ||
| const received = travelDistance('S1') | ||
| const expected = 1 | ||
| expect(received).toEqual(expected) | ||
| }) | ||
|
|
||
| test('Test #07', () => { | ||
| const received = travelDistance('1....S') | ||
| const expected = 5 | ||
| expect(received).toEqual(expected) | ||
| }) | ||
|
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||
| test('Test #08', () => { | ||
| const received = travelDistance('S12....3') | ||
| const expected = 7 | ||
| expect(received).toEqual(expected) | ||
| }) | ||
| }) |