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Contents
import solve from './alphametics';
describe('Solve the alphametics puzzle', () => {
test('puzzle with three letters', () => {
const puzzle = 'I + BB == ILL';
const expected = {
I: 1,
B: 9,
L: 0,
};
expect(solve(puzzle)).toEqual(expected);
});
xtest('solution must have unique value for each letter', () => {
const puzzle = 'A == B';
expect(solve(puzzle)).toBeNull();
});
xtest('leading zero solution is invalid', () => {
const puzzle = 'ACA + DD == BD';
expect(solve(puzzle)).toBeNull();
});
xtest('puzzle with four letters', () => {
const puzzle = 'AS + A == MOM';
const expected = {
A: 9,
S: 2,
M: 1,
O: 0,
};
expect(solve(puzzle)).toEqual(expected);
});
xtest('puzzle with six letters', () => {
const puzzle = 'NO + NO + TOO == LATE';
const expected = {
N: 7,
O: 4,
T: 9,
L: 1,
A: 0,
E: 2,
};
expect(solve(puzzle)).toEqual(expected);
});
xtest('puzzle with seven letters', () => {
const puzzle = 'HE + SEES + THE == LIGHT';
const expected = {
E: 4,
G: 2,
H: 5,
I: 0,
L: 1,
S: 9,
T: 7,
};
expect(solve(puzzle)).toEqual(expected);
});
xtest('puzzle with eight letters', () => {
const puzzle = 'SEND + MORE == MONEY';
const expected = {
S: 9,
E: 5,
N: 6,
D: 7,
M: 1,
O: 0,
R: 8,
Y: 2,
};
expect(solve(puzzle)).toEqual(expected);
});
xtest('puzzle with ten letters', () => {
const puzzle = 'AND + A + STRONG + OFFENSE + AS + A + GOOD == DEFENSE';
const expected = {
A: 5,
D: 3,
E: 4,
F: 7,
G: 8,
N: 0,
O: 2,
R: 1,
S: 6,
T: 9,
};
expect(solve(puzzle)).toEqual(expected);
});
});
Version data entries
185 entries across 185 versions & 1 rubygems