分区函数 partition function ## partition function: 归位函数,把最左边的数字当成分界数字,比它小的放左边,比它大的放右边 def ptn(lis, left, right): tmp = lis[left] while left < right: while left < right and lis[right] >= tmp: ## 不动那些大的. 必须加上等于号! right = right - 1 ...
functionquicksort(array,left,right)if(left<right)// 对当前子序列进行分割操作,并得到新基准值位置pivotIndex=partition(array,left,right)// 对左侧子序列递归排序quicksort(array,left,pivotIndex-1)// 对右侧子序列递归排序quicksort(array,pivotIndex+1,right) 在上面的伪代码中,quicksort()是快速排序函数的...
functionpartition(arr, p, r){ vari = p - 1, j = p, x = arr[r]; while(j < r){ if(arr[j] <= x){ i = i + 1; swap(arr, i, j); } j = j + 1; } swap(arr, r, i + 1); returni + 1; } functionquicksort(arr, p, r){ ...
function quicksort(arr, low, high) { if (low < high) { let pi = partition(arr, low, high); quicksort(arr, low, pi - 1); quicksort(arr, pi + 1, high); } } function partition(arr, low, high) { let pivot = arr[high]; let i = low - 1; for (let j = low; j < hi...
functionpartition(array, left, right, pivotIndex) pivotValue := array[pivotIndex] swap array[pivotIndex] and array[right]// Move pivot to endstoreIndex := leftforifromlefttoright - 1// left ≤ i < rightifarray[i] < pivotValue
function quicksort(arr, left, right): if left < right: pivotIndex = partition(arr, left, right) quicksort(arr, left, pivotIndex - 1) quicksort(arr, pivotIndex + 1, right) function partition(arr, left, right): pivot = arr[right] i = left - 1 for j from left to right - 1: ...
/* This function takes last element as pivot, places the pivot element at its correct position in sorted array, and places all smaller (smaller than pivot) to left of pivot and all greater elements to right of pivot */ partition (arr[], low, high) ...
functionswap(items, firstIndex, secondIndex){vartemp =items[firstIndex]; items[firstIndex]=items[secondIndex]; items[secondIndex]=temp; } 实现的代码 functionpartition(items, left, right) {varpivot = items[Math.floor((right + left) / 2)], ...
●Recursive Case: Choose a pivot, partition the array, and recursively sort the sub-arrays. Partition Function Partition(A[1...n]): swap (A[1] <=> #items <= pivot) i <- 0 for j <- 1 to n - 1 if (A[j] <= A[n]) ...
function swap(items, firstIndex, secondIndex){ var temp = items[firstIndex]; items[firstIndex] = items[secondIndex]; items[secondIndex] = temp; } 1. 2. 3. 4. 5. 实现的代码 function partition(items, left, right) { var pivot = items[Math.floor((right + left) / 2)], ...