草蜢 - 求和【难度:0级】:
答案1:
using System;
public static class Kata
{
public static int summation(int num)
{
return num*(num+1)/2;
}
}
答案2:
public static class Kata
{
public static int summation(int num)
{
return num*(num + 1)/2;
}
}
答案3:
using System;
public static class Kata
{
public static int summation(int num)
{
return (num*(num+1))/2;
}
}
答案4:
using System;
public static class Kata
{
public static int summation(int num)
{
return (num * (num+1)) / 2;
}
}
答案5:
using System;
public static class Kata
{
public static int summation(int num)
{
return num*(num+1)/2;
}
}
答案6:
using System;
public static class Kata
{
public static int