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Remove live code & console.log, leave examples as comments (Geometry, Graphs, Maths).

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This commit is contained in:
Eric Lavault
2021-10-10 17:55:08 +02:00
parent 29d2a84090
commit 9212e6d684
18 changed files with 198 additions and 216 deletions
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44
Maths/MatrixMultiplication.js
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@@ -10,7 +10,7 @@ const matrixCheck = (matrix) => {
if (index === 0) {
columnNumb = matrix[index].length
} else if (matrix[index].length !== columnNumb) {
console.log('The columns in this array are not equal')
// The columns in this array are not equal
} else {
return columnNumb
}
@@ -21,7 +21,7 @@ const matrixCheck = (matrix) => {
const twoMatricesCheck = (first, second) => {
const [firstRowLength, secondRowLength, firstColLength, secondColLength] = [first.length, second.length, matrixCheck(first), matrixCheck(second)]
if (firstRowLength !== secondColLength || secondRowLength !== firstColLength) {
console.log('These matrices do not have a common side')
// These matrices do not have a common side
return false
} else {
return true
@@ -44,7 +44,7 @@ const initiateEmptyArray = (first, second) => {
// Finally, `matrixMult` uses `Array.prototype.push()`, multiple layers of nested `for` loops, the addition assignment `+=` operator and multiplication operator `*` to perform the dot product between two matrices of differing sizes.
// Dot product, takes the row of the first matrix and multiplies it by the column of the second matrix, the `twoMatricesCheck` tested to see if they were the same size already.
// The dot product for each iteration is then saved to its respective index into `multMatrix`.
const matrixMult = (firstArray, secondArray) => {
export const matrixMult = (firstArray, secondArray) => {
const multMatrix = initiateEmptyArray(firstArray, secondArray)
for (let rm = 0; rm < firstArray.length; rm++) {
const rowMult = []
@@ -66,26 +66,26 @@ const matrixMult = (firstArray, secondArray) => {
return multMatrix
}
const firstMatrix = [
[1, 2],
[3, 4]
]
// const firstMatrix = [
// [1, 2],
// [3, 4]
// ]
const secondMatrix = [
[5, 6],
[7, 8]
]
// const secondMatrix = [
// [5, 6],
// [7, 8]
// ]
console.log(matrixMult(firstMatrix, secondMatrix)) // [ [ 19, 22 ], [ 43, 50 ] ]
// matrixMult(firstMatrix, secondMatrix) // [ [ 19, 22 ], [ 43, 50 ] ]
const thirdMatrix = [
[-1, 4, 1],
[7, -6, 2]
]
const fourthMatrix = [
[2, -2],
[5, 3],
[3, 2]
]
// const thirdMatrix = [
// [-1, 4, 1],
// [7, -6, 2]
// ]
// const fourthMatrix = [
// [2, -2],
// [5, 3],
// [3, 2]
// ]
console.log(matrixMult(thirdMatrix, fourthMatrix)) // [ [ 21, 16 ], [ -10, -28 ] ]
// matrixMult(thirdMatrix, fourthMatrix) // [ [ 21, 16 ], [ -10, -28 ] ]