试图理解“二进制插入排序” ？

问题描述

有谁能告诉我这个代码如何对数组进行排序？我不明白！这段代码如何降低常规插入排序的复杂性？

could anyone please tell me how this code sorts the array? i don't get it! and how is this code reducing the complexity of a regular insertion sort?

// Function to sort an array a[] of size 'n'
void insertionSort(int a[], int n)
{
    int i, loc, j, k, selected;

    for (i = 1; i < n; ++i)
    {
        j = i - 1;
        selected = a[i];

        // find location where selected sould be inseretd
        loc = binarySearch(a, selected, 0, j);

        // Move all elements after location to create space
        while (j >= loc)
        {
            a[j+1] = a[j];
            j--;
        }
        a[j+1] = selected;
    }
}

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