using System;
using System.Text;
public static string[] GenerateCombinations(string[] Array1, int[] Array2)
{
if(Array1 == null) throw new ArgumentNullException("Array1");
if(Array2 == null) throw new ArgumentNullException("Array2");
if(Array1.Length != Array2.Length)
throw new ArgumentException("Must be the same size as Array1.", "Array2");
if(Array1.Length == 0)
return new string[0];
int outputSize = 1;
var current = new int[Array1.Length];
for(int i = 0; i < current.Length; ++i)
{
if(Array2[i] < 1)
throw new ArgumentException("Contains invalid values.", "Array2");
if(Array1[i] == null)
throw new ArgumentException("Contains null values.", "Array1");
outputSize *= Array2[i];
current[i] = 1;
}
var result = new string[outputSize];
for(int i = 0; i < outputSize; ++i)
{
var sb = new StringBuilder();
for(int j = 0; j < current.Length; ++j)
{
sb.Append(Array1[j]);
sb.Append(current[j].ToString());
if(j != current.Length - 1)
sb.Append(' ');
}
result[i] = sb.ToString();
int incrementIndex = current.Length - 1;
while(incrementIndex >= 0 && current[incrementIndex] == Array2[incrementIndex])
{
current[incrementIndex] = 1;
--incrementIndex;
}
if(incrementIndex >= 0)
++current[incrementIndex];
}
return result;
}
生成所有可能的组合
生成所有可能的组合
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