class Solution {
public int solution(int X, int Y, int D) {
// write your code in Java SE 8
// if(X > Y || X == Y) return 0;
// int steps = 0;
// while(Y > X)
// {
// X+=D;
// steps++;
// }
// return steps;
int iStep = 0;
if((Y-X)%D == 0)
{
iStep = (Y-X)/D;
}else{
iStep = ((Y-X)/D)+1;
}
return iStep;
}
}
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