Skip to content
Merged
Show file tree
Hide file tree
Changes from all commits
Commits
File filter

Filter by extension

Filter by extension

Conversations
Failed to load comments.
Loading
Jump to
Jump to file
Failed to load files.
Loading
Diff view
Diff view
82 changes: 82 additions & 0 deletions solution/2600-2699/2601.Prime Subtraction Operation/README.md
Original file line number Diff line number Diff line change
Expand Up @@ -274,4 +274,86 @@ function primeSubOperation(nums: number[]): boolean {

<!-- solution:end -->

<!-- solution:start -->

### 方法二:预处理素数

<!-- tabs:start -->

#### TypeScript

```ts
function primeSubOperation(nums: number[]): boolean {
const p: number[] = [];
const max = Math.max(...nums);

for (let i = 2; i < max; i++) {
let isPrime = true;

for (const x of p) {
if (i % x === 0) {
isPrime = false;
break;
}
}

while (isPrime && p.length <= i) {
p.push(i);
}
}

for (let i = nums.length - 2; i >= 0; i--) {
if (nums[i] < nums[i + 1]) continue;

const [x, next] = [nums[i], nums[i + 1]];
const prime = p[x - next + 1];

if (!prime || prime >= x) return false;
nums[i] -= prime;
}

return true;
}
```

#### JavaScript

```js
function primeSubOperation(nums) {
const p = [];
const max = Math.max(...nums);

for (let i = 2; i < max; i++) {
let isPrime = true;

for (const x of p) {
if (i % x === 0) {
isPrime = false;
break;
}
}

while (isPrime && p.length <= i) {
p.push(i);
}
}

for (let i = nums.length - 2; i >= 0; i--) {
if (nums[i] < nums[i + 1]) continue;

const [x, next] = [nums[i], nums[i + 1]];
const prime = p[x - next + 1];

if (!prime || prime >= x) return false;
nums[i] -= prime;
}

return true;
}
```

<!-- tabs:end -->

<!-- solution:end -->

<!-- problem:end -->
82 changes: 82 additions & 0 deletions solution/2600-2699/2601.Prime Subtraction Operation/README_EN.md
Original file line number Diff line number Diff line change
Expand Up @@ -271,4 +271,86 @@ function primeSubOperation(nums: number[]): boolean {

<!-- solution:end -->

<!-- solution:start -->

### Solution 2: Preprocessing prime numbers

<!-- tabs:start -->

#### TypeScript

```ts
function primeSubOperation(nums: number[]): boolean {
const p: number[] = [];
const max = Math.max(...nums);

for (let i = 2; i < max; i++) {
let isPrime = true;

for (const x of p) {
if (i % x === 0) {
isPrime = false;
break;
}
}

while (isPrime && p.length <= i) {
p.push(i);
}
}

for (let i = nums.length - 2; i >= 0; i--) {
if (nums[i] < nums[i + 1]) continue;

const [x, next] = [nums[i], nums[i + 1]];
const prime = p[x - next + 1];

if (!prime || prime >= x) return false;
nums[i] -= prime;
}

return true;
}
```

#### JavaScript

```js
function primeSubOperation(nums) {
const p = [];
const max = Math.max(...nums);

for (let i = 2; i < max; i++) {
let isPrime = true;

for (const x of p) {
if (i % x === 0) {
isPrime = false;
break;
}
}

while (isPrime && p.length <= i) {
p.push(i);
}
}

for (let i = nums.length - 2; i >= 0; i--) {
if (nums[i] < nums[i + 1]) continue;

const [x, next] = [nums[i], nums[i + 1]];
const prime = p[x - next + 1];

if (!prime || prime >= x) return false;
nums[i] -= prime;
}

return true;
}
```

<!-- tabs:end -->

<!-- solution:end -->

<!-- problem:end -->
31 changes: 31 additions & 0 deletions solution/2600-2699/2601.Prime Subtraction Operation/Solution2.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,31 @@
function primeSubOperation(nums) {
const p = [];
const max = Math.max(...nums);

for (let i = 2; i < max; i++) {
let isPrime = true;

for (const x of p) {
if (i % x === 0) {
isPrime = false;
break;
}
}

while (isPrime && p.length <= i) {
p.push(i);
}
}

for (let i = nums.length - 2; i >= 0; i--) {
if (nums[i] < nums[i + 1]) continue;

const [x, next] = [nums[i], nums[i + 1]];
const prime = p[x - next + 1];

if (!prime || prime >= x) return false;
nums[i] -= prime;
}

return true;
}
31 changes: 31 additions & 0 deletions solution/2600-2699/2601.Prime Subtraction Operation/Solution2.ts
Original file line number Diff line number Diff line change
@@ -0,0 +1,31 @@
function primeSubOperation(nums: number[]): boolean {
const p: number[] = [];
const max = Math.max(...nums);

for (let i = 2; i < max; i++) {
let isPrime = true;

for (const x of p) {
if (i % x === 0) {
isPrime = false;
break;
}
}

while (isPrime && p.length <= i) {
p.push(i);
}
}

for (let i = nums.length - 2; i >= 0; i--) {
if (nums[i] < nums[i + 1]) continue;

const [x, next] = [nums[i], nums[i + 1]];
const prime = p[x - next + 1];

if (!prime || prime >= x) return false;
nums[i] -= prime;
}

return true;
}
Loading