Sortieren Sie JavaScript zusammen
let array = [70, 50, 30, 10, 20, 40, 60]
function mergeSort(array) {
let l = 0
let r = array.length
let m = Math.round((r - l) / 2)
if (r === 1) {
return // returns recursively
}
let L = [] // left half of current array
let R = [] // right half of current array
for (let i = l; i < m; i++) {
L.push(array[i])
}
for (let j = m; j < r; j++) {
R.push(array[j])
}
mergeSort(L)
mergeSort(R)
let i = 0, j = 0, k = 0
// Merging part
while (i < L.length && j < R.length) {
if (L[i] < R[j]) {
array[k] = L[i]
i++
} else {
array[k] = R[j]
j++
}
k++
}
while (i < L.length) {
array[k] = L[i]
i++
k++
}
while (j < R.length) {
array[k] = R[j]
j++
k++
}
}
mergeSort(array)
console.log(array) // [Log]: [10, 20, 30, 40, 50, 60, 70]
// Time complexity of merge sort is O(NlogN)
// Space complexity is N, because we use an auxiliary array to sort all elements
Mysterious Macaque