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Why does this code using random strings print "hello world"?
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randomwhyusingstringsdoesprintworldthishellocode
Problem
The following print statement would print "hello world".
Could anyone explain this?
And
Could anyone explain this?
System.out.println(randomString(-229985452) + " " + randomString(-147909649));And
randomString() looks like this:public static String randomString(int i)
{
Random ran = new Random(i);
StringBuilder sb = new StringBuilder();
while (true)
{
int k = ran.nextInt(27);
if (k == 0)
break;
sb.append((char)('`' + k));
}
return sb.toString();
}Solution
When
Every
java.util.Random is instantiated with a specific seed parameter (in this case -229985452 or -147909649), it follows the random number generation algorithm beginning with that seed value.Every
Random constructed with the same seed will generate the same pattern of numbers every time.Context
Stack Overflow Q#15182496, score: 955
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