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def solution(A): | |
l = len(A) | |
if not (0 < l <= 100000): | |
return -1 | |
s_l = s_r = 0 | |
s = sum(A) | |
for i in range(l): | |
if not (-2147483648 < A[i] < 2147483647): | |
return -1 | |
s_r = s - s_l - A[i] | |
if s_l == s_r: | |
return i | |
s_l = s_l + A[i] | |
pass | |
# credit to http://blog.codility.com/2011/03/solutions-for-task-equi.html | |
def equi(A): | |
if A: | |
n = len(A) | |
if n > 1: | |
sl = 0 | |
s2 = sum(A) | |
for i, e in enumerate(A): | |
if s1 == (s2-e): | |
return i | |
s1 += e | |
s2 -= e | |
return -1 | |
else: | |
return 0 | |
return -1 | |
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package solution | |
// you can also use imports, for example: | |
// import "fmt" | |
// you can use fmt.Println for debugging purposes, e.g. | |
// fmt.Println("this is a debug message") | |
// write your code in Go 1.4 | |
func Solution(X int, Y int, D int) int { | |
if X == Y { | |
return 0 | |
} | |
var s int = 0 | |
if X < Y && D != 0 { | |
s = ((Y-X) / D) | |
// fmt.Println("s => ", s) | |
// fmt.Println("Y => ", Y) | |
if ((Y-X) - D * s > 0) { | |
// fmt.Println("D * s => ", D * s) | |
// fmt.Println("(Y-X) => ", (Y-X)) | |
s = s + 1 | |
} | |
} | |
return s | |
} |
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