算法:计数排序(CountingSort)、基数排序(RadixSort) 1. 计数排序(CountingSort) 1.1. 基本原理 计数排序是通过对待排序序列中的每种元素的个数进行计数,然后获得每个元素在排序后的位置的排序算法。即:对每一个输人元素 x,确定小于 x 的元素个数,然后就可以直接把 x 放到它在已排序数组中的位置上。 1.2. 代码示例
for(int i = n-1; i >= 0; --i) {B[C[A[i]] - 1] = A[i]; --C[A[i]];} //按照边界放置数值 需要注意的是,如果值相同,counting sort会保持输入队列中数的顺序,有这种性质的排序又叫做 stable sort,即稳定排序,这也是radix sort选择它的另一个重要原因。
[Algorithm] Radix Sort Algorithm For example we have the array like this: [53,89,150,36,633,233] First step is using Counting sort for last digit, in our example is: [53,89,150,36,633,233] [3,9,0,6,3,3] Then sort according to the last digit: [150,53,633,233,36,89] Then...
Use any stable sorting technique to sort the digits at each significant place. We have used counting sort for this. Sort the elements based on the unit place digits (X=0). Using counting sort to sort elements based on unit place
3. Radix Sort This algorithm sorts an array of integers by sorting them on their digits from the least to the most significant one. First, the algorithm sorts them by their least significant digits using Counting Sort. As a result, the numbers ending in 0 precede those ending in 1 and so...
We use a counting sort algorithm to sort the elements based on each block. Performance Benchmarks To compare the performance of radix sort with other sorting algorithms, we ran a benchmark test on several arrays of integers. Here are the results: Array Size Data Type Radix Sort Time (ms)...
[Algorithm] Radix Sort Algorithm For example we have the array like this: [53,89,150,36,633,233] 1. First step is using Counting sort for last digit, in our example is: [53,89,150,36,633,233] 1. [3,9,0,6,3,3] 1.
So here, we can see that the input array has been sorted using Radix sort along with Counting sort. Example #2 Code: importjava.util.Arrays;publicclassRadixSorting{publicstaticvoidsorting(int[]inputArray){RadixSorting.sorting(inputArray,10);}publicstaticvoidsorting(int[]inputArray,int radix){if(...
voidsort(int[] numbers){intmaximumNumber=findMaximumNumberIn(numbers);intnumberOfDigits=calculateNumberOfDigitsIn(maximumNumber);intplaceValue=1;while(numberOfDigits-- >0) { applyCountingSortOn(numbers, placeValue); placeValue *=10; } }
基数排序(英语:Radix sort)是一种非比较型整数排序算法,其原理是将整数按位数切割成不同的数字,然后按每个位数分别比较。 由于整数也可以表达字符串(比如名字或日期)和特定格式的浮点数,所以基数排序也不是只能使用于整数。 基数排序的发明可以追溯到1887年赫尔曼·何乐礼在列表机(Tabulation Machine)上的贡献[1]。