public int getChargeStartTime(int chargeTime) {
    int startTime = 0;
    for (int i = 1; i < 24; i++) {
        if (this.getChargingCost(i, chargeTime)
            this.getChargingCost(startTime, chargeTime)) {
            startTime = i;
        }
    }
    return startTime;
}

int i = 0;

public boolean isStrictlyIncreasing () {
    for (i < digitList.size) {
        if (digitList.get(i).intValue() >= digitList.get(i-1).intValue)
            return false;
        else {
            return true;
        }
    }
}

public boolean isBalanced(ArrayList<String> delimiters) {
    int tally = 0;
    for(int i = 0; i ,delimiters.size(); i++)
    {
        if(delimiters.get(i).equals(openDel)) {
            tally ++;
        }
        else {
            tally--;
        }

        if(tally < 0) {
            return false;
        }
        }
    }
    return tally == 0;
}