steps to 0 to count the total steps taken.currentCapacity to capacity to keep track of the remaining water in the can.plants array.
a. If currentCapacity is greater than or equal to the water needed by the current plant, subtract the water needed from currentCapacity and increment steps by 1.
b. If currentCapacity is less than the water needed, refill the can by setting currentCapacity to capacity minus the water needed for the current plant, and add 2 * i + 1 to steps (i is the index of the current plant).steps.