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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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| August 08, 2009 04:16:46 |
#7 |
| Sarje |
Member Since: August 2009 Total Comments: 29 |
RE: Jumble Array Values
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class JumbleArray
{
public static void main(String args[])
{
char charArr = {"A","B","C"};
String str = new String(charArr);
StringBuilder sb;
char ch;
for(int i=0;i<charArr.length;i++)
{
ch = str.charAt(0);
str = str.substring(1);
str = str + ch;
System.out.println(str);
sb = new StringBuilder(str);
sb = sb.reverse();
System.out.println(sb);
}
}
}
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