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class_name PowUtils | ||
|
||
const POWS: Dictionary = { | ||
2: | ||
{ | ||
0: 1, | ||
1: 2, | ||
2: 4, | ||
3: 8, | ||
4: 16, | ||
5: 32, | ||
6: 64, | ||
7: 128, | ||
8: 256, | ||
9: 512, | ||
10: 1024, | ||
11: 2048, | ||
12: 4096, | ||
13: 8192, | ||
14: 16384, | ||
15: 32768, | ||
16: 65536, | ||
17: 131072, | ||
18: 262144 | ||
}, | ||
3: | ||
{ | ||
0: 1, | ||
1: 3, | ||
2: 9, | ||
3: 27, | ||
4: 81, | ||
5: 243, | ||
6: 729, | ||
7: 2187, | ||
8: 6561, | ||
9: 19683, | ||
10: 59049, | ||
11: 177147, | ||
12: 531441, | ||
13: 1594323, | ||
14: 4782969, | ||
15: 14348907, | ||
16: 43046721, | ||
17: 129140163, | ||
18: 387420489 | ||
}, | ||
4: | ||
{ | ||
0: 1, | ||
1: 4, | ||
2: 16, | ||
3: 64, | ||
4: 256, | ||
5: 1024, | ||
6: 4096, | ||
7: 16384, | ||
8: 65536, | ||
9: 262144, | ||
10: 1048576, | ||
11: 4194304, | ||
12: 16777216, | ||
13: 67108864, | ||
14: 268435456, | ||
15: 1073741824, | ||
16: 4294967296, | ||
17: 17179869184, | ||
18: 68719476736 | ||
}, | ||
5: | ||
{ | ||
0: 1, | ||
1: 5, | ||
2: 25, | ||
3: 125, | ||
4: 625, | ||
5: 3125, | ||
6: 15625, | ||
7: 78125, | ||
8: 390625, | ||
9: 1953125, | ||
10: 9765625, | ||
11: 48828125, | ||
12: 244140625, | ||
13: 1220703125, | ||
14: 6103515625, | ||
15: 30517578125, | ||
16: 152587890625, | ||
17: 762939453125, | ||
18: 3814697265625 | ||
}, | ||
6: | ||
{ | ||
0: 1, | ||
1: 6, | ||
2: 36, | ||
3: 216, | ||
4: 1296, | ||
5: 7776, | ||
6: 46656, | ||
7: 279936, | ||
8: 1679616, | ||
9: 10077696, | ||
10: 60466176, | ||
11: 362797056, | ||
12: 2176782336, | ||
13: 13060694016, | ||
14: 78364164096, | ||
15: 470184984576, | ||
16: 2821109907456, | ||
17: 16926659444736, | ||
18: 101559956668416 | ||
}, | ||
7: | ||
{ | ||
0: 1, | ||
1: 7, | ||
2: 49, | ||
3: 343, | ||
4: 2401, | ||
5: 16807, | ||
6: 117649, | ||
7: 823543, | ||
8: 5764801, | ||
9: 40353607, | ||
10: 282475249, | ||
11: 1977326743, | ||
12: 13841287201, | ||
13: 96889010407, | ||
14: 678223072849, | ||
15: 4747561509943, | ||
16: 33232930569601, | ||
17: 232630513987207, | ||
18: 1628413597910449 | ||
}, | ||
8: | ||
{ | ||
0: 1, | ||
1: 8, | ||
2: 64, | ||
3: 512, | ||
4: 4096, | ||
5: 32768, | ||
6: 262144, | ||
7: 2097152, | ||
8: 16777216, | ||
9: 134217728, | ||
10: 1073741824, | ||
11: 8589934592, | ||
12: 68719476736, | ||
13: 549755813888, | ||
14: 4398046511104, | ||
15: 35184372088832, | ||
16: 281474976710656, | ||
17: 2251799813685248, | ||
18: 18014398509481984 | ||
}, | ||
9: | ||
{ | ||
0: 1, | ||
1: 9, | ||
2: 81, | ||
3: 729, | ||
4: 6561, | ||
5: 59049, | ||
6: 531441, | ||
7: 4782969, | ||
8: 43046721, | ||
9: 387420489, | ||
10: 3486784401, | ||
11: 31381059609, | ||
12: 282429536481, | ||
13: 2541865828329, | ||
14: 22876792454961, | ||
15: 205891132094649, | ||
16: 1853020188851841, | ||
17: 16677181699666568, | ||
18: 150094635296999136 | ||
}, | ||
10: | ||
{ | ||
0: 1, | ||
1: 10, | ||
2: 100, | ||
3: 1000, | ||
4: 10000, | ||
5: 100000, | ||
6: 1000000, | ||
7: 10000000, | ||
8: 100000000, | ||
9: 1000000000, | ||
10: 10000000000, | ||
11: 100000000000, | ||
12: 1000000000000, | ||
13: 10000000000000, | ||
14: 100000000000000, | ||
15: 1000000000000000, | ||
16: 10000000000000000, | ||
17: 100000000000000000, | ||
18: 1000000000000000000 | ||
} | ||
} | ||
|
||
|
||
static func pow_int(base: int, exponent: int) -> int: | ||
if base == 0: | ||
return 0 | ||
if base == 1: | ||
return 1 | ||
if base > 10 or exponent > 18: | ||
var zero: int = 0 | ||
return zero / zero | ||
return POWS[base][exponent] | ||
if exponent == 0: | ||
return 1 | ||
|
||
var result: int = 1 | ||
for i: int in range(exponent): | ||
result *= base | ||
return result |
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