java - 选择排序，对于 Java

Question

我无法理解这段伪代码，也无法将其实现到我的程序中。有人可以更好地解释它或向我展示代码的外观吗？谢谢。

A - an array containing the list of numbers
numItems - the number of numbers in the list

for i = 0 to numItems - 1
    for  j = i+1 to numItems               
        if A[i] > A[j]
            // Swap the entries
            Temp = A[i]
            A[i] = A[j]
            A[j] = Temp          
        End If    
    Next j
Next i 

Answer 1

好吧，让我们将伪代码翻译成伪英语。

A - an array containing the list of numbers
numItems - the number of numbers in the list

for i = 0 to numItems - 1
    for  j = i+1 to numItems               
        if A[i] > A[j]
            // Swap the entries
            Temp = A[i]
            A[i] = A[j]
            A[j] = Temp          
        End If    
    Next j
Next i

可能会读到

Count through each item, from the beginning to the end, calling it X
  While considering item X, count through each item after it, from just
  after X to the end, calling it Y
    If X is bigger than Y, swap the two, temporarily storing X in Temp
      so it doesn't get lost when we copy Y into X.  Copy Y into X, and then
      Copy the temporarily stored old value of X (remember it is in Temp)
      back into Y.  Now the values of X and Y are swapped (so X is now smaller
      than Y)

现在你的工作就是用代码编写它。