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Copy path1041. Robot Bounded In Circle
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1041. Robot Bounded In Circle
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class Solution {
public boolean isRobotBounded(String instructions)
{
boolean north = true, south = false, east = false, west = false;
int x = 0, y = 0;
for(char i : instructions.toCharArray())
{
if(i == 'G')
{
if(north)
{
y++;
}
else if(south)
{
y--;
}
else if(east)
{
x++;
}
else if(west)
{
x--;
}
}
else if( i == 'L')
{
if(north)
{
north = false;
west = true;
}
else if(south)
{
south = false;
east = true;
}
else if(east)
{
east = false;
north = true;
}
else if(west)
{
west = false;
south = true;
}
}
else if (i == 'R')
{
if(north)
{
north = false;
east = true;
}
else if(south)
{
south = false;
west = true;
}
else if(east)
{
east = false;
south = true;
}
else if(west)
{
west = false;
north = true;
}
}
}
if(x == 0 && y == 0)
{
return true;
}
if(north)
{
return false;
}
return true;
}
}