chore: manual translations (#42811)

This commit is contained in:
Nicholas Carrigan (he/him)
2021-07-09 21:23:54 -07:00
committed by GitHub
parent a3395269a0
commit c4fd49e5b7
806 changed files with 8935 additions and 4378 deletions

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@ -15,23 +15,41 @@ It is possible to write ten as the sum of primes in exactly five different ways:
5 + 5<br>
5 + 3 + 2<br>
3 + 3 + 2 + 2<br>
2 + 2 + 2 + 2 + 2<br>
2 + 2 + 2 + 2 + 2<br><br>
</div>
What is the first value which can be written as the sum of primes in over five thousand different ways?
What is the first value which can be written as the sum of primes in over `n` ways?
# --hints--
`primeSummations()` should return a number.
`primeSummations(5)` should return a number.
```js
assert(typeof primeSummations() === 'number');
assert(typeof primeSummations(5) === 'number');
```
`primeSummations()` should return 71.
`primeSummations(5)` should return `11`.
```js
assert.strictEqual(primeSummations(), 71);
assert.strictEqual(primeSummations(5), 11);
```
`primeSummations(100)` should return `31`.
```js
assert.strictEqual(primeSummations(100), 31);
```
`primeSummations(1000)` should return `53`.
```js
assert.strictEqual(primeSummations(1000), 53);
```
`primeSummations(5000)` should return `71`.
```js
assert.strictEqual(primeSummations(5000), 71);
```
# --seed--
@ -39,16 +57,54 @@ assert.strictEqual(primeSummations(), 71);
## --seed-contents--
```js
function primeSummations() {
function primeSummations(n) {
return true;
}
primeSummations();
primeSummations(5);
```
# --solutions--
```js
// solution required
function primeSummations(n) {
function getSievePrimes(max) {
const primesMap = new Array(max).fill(true);
primesMap[0] = false;
primesMap[1] = false;
const primes = [];
for (let i = 2; i < max; i += 2) {
if (primesMap[i]) {
primes.push(i);
for (let j = i * i; j < max; j += i) {
primesMap[j] = false;
}
}
if (i === 2) {
i = 1;
}
}
return primes;
}
const MAX_NUMBER = 100;
const primes = getSievePrimes(MAX_NUMBER);
for (let curNumber = 2; curNumber < MAX_NUMBER; curNumber++) {
const combinations = new Array(curNumber + 1).fill(0);
combinations[0] = 1;
for (let i = 0; i < primes.length; i++) {
for (let j = primes[i]; j <= curNumber; j++) {
combinations[j] += combinations[j - primes[i]];
}
}
if (combinations[curNumber] > n) {
return curNumber;
}
}
return false;
}
```