2018-10-10 22:03:03 +00:00
|
|
|
|
---
|
|
|
|
|
id: 599c333915e0ea32d04d4bec
|
2020-12-16 07:37:30 +00:00
|
|
|
|
title: 元素操作
|
2018-10-10 22:03:03 +00:00
|
|
|
|
challengeType: 5
|
|
|
|
|
videoUrl: ''
|
|
|
|
|
---
|
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
# --description--
|
|
|
|
|
|
|
|
|
|
<p>实现基本的元素矩阵 - 矩阵和标量矩阵运算。 </p><p>实行: </p><p> :: *另外</p><p> :: *减法</p><p> :: *乘法</p><p> :: *分裂</p><p> :: *取幂</p><p>第一个参数是要执行的操作,例如:用于矩阵加法的“m_add”和用于标量加法的“s_add”。第二和第三参数将是要在其上执行操作的矩阵。 </p>
|
|
|
|
|
|
|
|
|
|
# --hints--
|
|
|
|
|
|
|
|
|
|
`operation`是一种功能。
|
2018-10-10 22:03:03 +00:00
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
```js
|
|
|
|
|
assert(typeof operation === 'function');
|
|
|
|
|
```
|
|
|
|
|
|
|
|
|
|
`operation("m_add",[[1,2],[3,4]],[[1,2],[3,4]])`应返回`[[2,4],[6,8]]` 。
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
assert.deepEqual(
|
|
|
|
|
operation(
|
|
|
|
|
'm_add',
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
]
|
|
|
|
|
),
|
|
|
|
|
[
|
|
|
|
|
[2, 4],
|
|
|
|
|
[6, 8]
|
|
|
|
|
]
|
|
|
|
|
);
|
2018-10-10 22:03:03 +00:00
|
|
|
|
```
|
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
`operation("s_add",[[1,2],[3,4]],[[1,2],[3,4]])`应返回`[[3,4],[5,6]]` 。
|
2018-10-10 22:03:03 +00:00
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
```js
|
|
|
|
|
assert.deepEqual(
|
|
|
|
|
operation(
|
|
|
|
|
's_add',
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
],
|
|
|
|
|
2
|
|
|
|
|
),
|
|
|
|
|
[
|
|
|
|
|
[3, 4],
|
|
|
|
|
[5, 6]
|
|
|
|
|
]
|
|
|
|
|
);
|
|
|
|
|
```
|
2018-10-10 22:03:03 +00:00
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
`operation("m_sub",[[1,2],[3,4]],[[1,2],[3,4]])`应返回`[[0,0],[0,0]]` 。
|
2018-10-10 22:03:03 +00:00
|
|
|
|
|
|
|
|
|
```js
|
2020-12-16 07:37:30 +00:00
|
|
|
|
assert.deepEqual(
|
|
|
|
|
operation(
|
|
|
|
|
'm_sub',
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
]
|
|
|
|
|
),
|
|
|
|
|
[
|
|
|
|
|
[0, 0],
|
|
|
|
|
[0, 0]
|
|
|
|
|
]
|
|
|
|
|
);
|
|
|
|
|
```
|
2018-10-10 22:03:03 +00:00
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
`operation("m_mult",[[1,2],[3,4]],[[1,2],[3,4]])`应该返回`[[1,4],[9,16]]` 。
|
|
|
|
|
|
|
|
|
|
```js
|
|
|
|
|
assert.deepEqual(
|
|
|
|
|
operation(
|
|
|
|
|
'm_mult',
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
]
|
|
|
|
|
),
|
|
|
|
|
[
|
|
|
|
|
[1, 4],
|
|
|
|
|
[9, 16]
|
|
|
|
|
]
|
|
|
|
|
);
|
2018-10-10 22:03:03 +00:00
|
|
|
|
```
|
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
`operation("m_div",[[1,2],[3,4]],[[1,2],[3,4]])`应返回`[[1,1],[1,1]]` 。
|
2018-10-10 22:03:03 +00:00
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
```js
|
|
|
|
|
assert.deepEqual(
|
|
|
|
|
operation(
|
|
|
|
|
'm_div',
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
]
|
|
|
|
|
),
|
|
|
|
|
[
|
|
|
|
|
[1, 1],
|
|
|
|
|
[1, 1]
|
|
|
|
|
]
|
|
|
|
|
);
|
|
|
|
|
```
|
2018-10-10 22:03:03 +00:00
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
`operation("m_exp",[[1,2],[3,4]],[[1,2],[3,4]])`应返回`[[1,4],[27,256]]` 。
|
2018-10-10 22:03:03 +00:00
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
```js
|
|
|
|
|
assert.deepEqual(
|
|
|
|
|
operation(
|
|
|
|
|
'm_exp',
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
[1, 2],
|
|
|
|
|
[3, 4]
|
|
|
|
|
]
|
|
|
|
|
),
|
|
|
|
|
[
|
|
|
|
|
[1, 4],
|
|
|
|
|
[27, 256]
|
|
|
|
|
]
|
|
|
|
|
);
|
|
|
|
|
```
|
2018-10-10 22:03:03 +00:00
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
`operation("m_add",[[1,2,3,4],[5,6,7,8]],[[9,10,11,12],[13,14,15,16]])`应该返回`[[10,12,14,16],[18,20,22,24]]` 。
|
2018-10-10 22:03:03 +00:00
|
|
|
|
|
|
|
|
|
```js
|
2020-12-16 07:37:30 +00:00
|
|
|
|
assert.deepEqual(
|
|
|
|
|
operation(
|
|
|
|
|
'm_add',
|
|
|
|
|
[
|
|
|
|
|
[1, 2, 3, 4],
|
|
|
|
|
[5, 6, 7, 8]
|
|
|
|
|
],
|
|
|
|
|
[
|
|
|
|
|
[9, 10, 11, 12],
|
|
|
|
|
[13, 14, 15, 16]
|
|
|
|
|
]
|
|
|
|
|
),
|
|
|
|
|
[
|
|
|
|
|
[10, 12, 14, 16],
|
|
|
|
|
[18, 20, 22, 24]
|
|
|
|
|
]
|
|
|
|
|
);
|
2018-10-10 22:03:03 +00:00
|
|
|
|
```
|
2020-08-13 15:24:35 +00:00
|
|
|
|
|
2020-12-16 07:37:30 +00:00
|
|
|
|
# --solutions--
|
|
|
|
|
|