An array of Delphi example, Delphi use backtracking to find different combinations of R number n of the natural numbers, you can specify the nature and number of array elements, and then click the "block" button, you can see the grouping effect.

Delphi数组例子，Delphi使用回溯法找出n个自然数中取r个数的不同位组合\Project1.cfg
..................................................................\Project1.dof
..................................................................\Project1.dpr
..................................................................\Project1.res
..................................................................\Unit1.dcu
..................................................................\Unit1.ddp
..................................................................\Unit1.dfm
..................................................................\Unit1.pas
Delphi数组例子，Delphi使用回溯法找出n个自然数中取r个数的不同位组合

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