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GeekInterview.com > Interview Questions > J2EE > Core Java
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Question: Jumble Array Values
Answer: An array A is of size N. Write a java method that jumbles all values in the array. All possible permutations must be possible and chances for each possible permutation must be equal. For example, size of array A is 3. A[0]=x, A[1]=y, A[2] =z.
Possible permutations are 3! After jumbling elements, there would be equal chances for each of xyz,yxz,... to be in the array elements.
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| June 06, 2009 06:42:05 |
#6 |
| vijusatya |
Member Since: May 2009 Total Comments: 3 |
RE: Jumble Array Values
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public void jumble()
{
String a=new String{"A","B","C"};
ArrayList ar=new ArrayList();
for (i=0;i<=arr.length;i++) { String str=new String(a[i]);
for(j=0;j<=arr.length;j++)
{
if(!(a[i].equals(a[j])))
str=str+a[j];
}
if(!ar.contains(str)
{
System.out.println(str);
ar.add(str);
} } |
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