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Amazon Interview Question: Design an OO parking lot [closed]
...
Probably we can add floors to parking lot..
– Barry
Nov 5 '11 at 14:06
14
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Generating a UUID in Postgres for Insert statement?
...ext || ':' || clock_timestamp()::text) placing '4' from 13) placing to_hex(floor(random()*(11-8+1) + 8)::int)::text from 17)::cstring);
* Thanks to @Denis Stafichuk @Karsten and @autronix
Also, in modern Postgres, you can simply cast:
SELECT md5(random()::text || clock_timestamp()::text)::uu...
“’” showing on page instead of “ ' ”
... />
</system.web>
</configuration>
Setting encoding in jsp
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Modulo operation with negative numbers
...b) (truncate) description of mod. But it is also possible that the rule is floor(a/b) (Knuth). In the Knuth case -5/3 is -2 and the mod becomes 1. In short: one module has a sign that follows the dividend sign (truncate), the other module has a sign that follows the divisor sign (Knuth).
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How can we programmatically detect which iOS version is device running on? [duplicate]
...tion Guide, which involves checking the Foundation Framework version.
if (floor(NSFoundationVersionNumber) <= NSFoundationVersionNumber_iOS_6_1) {
// Load resources for iOS 6.1 or earlier
} else {
// Load resources for iOS 7 or later
}
...
How do I convert a string to a number in PHP?
..."10.12";
Perform math operations on the strings:
$num = "10" + 1;
$num = floor("10.1");
Use intval() or floatval():
$num = intval("10");
$num = floatval("10.1");
Use settype().
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Creating Threads in python
...s_prime(n):
if n % 2 == 0:
return False
sqrt_n = int(math.floor(math.sqrt(n)))
for i in range(3, sqrt_n + 1, 2):
if n % i == 0:
return False
return True
def main():
with concurrent.futures.ThreadPoolExecutor(max_workers=5) as executor:
for nu...
How to get Bitmap from an Uri?
...TwoForSampleRatio(double ratio){
int k = Integer.highestOneBit((int)Math.floor(ratio));
if(k==0) return 1;
else return k;
}
The getBitmap() call from Mark Ingram's post also calls the decodeStream(), so you don't lose any functionality.
References:
Android: Get thumbnail of image on SD ca...
Why doesn't indexOf work on an array IE8?
... || 0;
from = (from < 0)
? Math.ceil(from)
: Math.floor(from);
if (from < 0)
from += len;
for (; from < len; from++)
{
if (from in this &&
this[from] === elt)
return from;
}
return -1;
};
}
This is the vers...
How do I restrict a float value to only two places after the decimal point in C?
...ks:
#include <math.h>
float val = 37.777779;
float rounded_down = floorf(val * 100) / 100; /* Result: 37.77 */
float nearest = roundf(val * 100) / 100; /* Result: 37.78 */
float rounded_up = ceilf(val * 100) / 100; /* Result: 37.78 */
Notice that there are three different rounding...