Given two integers
a
and
b
, which can be positive or negative, find the sum of all the numbers between including them too and return it. If the two numbers are equal return
a
or
b
.
Note:
a
and
b
are not ordered!
Examples
GetSum(1, 0) == 1 // 1 + 0 = 1
GetSum(1, 2) == 3 // 1 + 2 = 3
GetSum(0, 1) == 1 // 0 + 1 = 1
GetSum(1, 1) == 1 // 1 Since both are same
GetSum(-1, 0) == -1 // -1 + 0 = -1
GetSum(-1, 2) == 2 // -1 + 0 + 1 + 2 = 2
我的
function GetSum( a,b )
{
var sum=0;
if(a==b)
return a;
if(a<b)
{
for(var i=a;i<=b;i++)
sum += i;
}
if(a>b)
{
for(var i=b;i<=a;i++)
sum += i;
}
return sum;
}
others: