buzzcode2007/XS-IBDP_Compsci-Java_Intro
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add line clearing and converted array to stack

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buzz-lightsnack-2007 2024-01-19 11:10:05 +08:00
parent b19efc6595
commit 2ad7bcb227
1 changed files with 37 additions and 25 deletions
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60
src/xs_ibdpcompsci_javaintro/calculator.java
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@ -3,13 +3,27 @@ import java.util.*;
import java.util.regex.Pattern; import java.util.regex.Pattern;
class RPN_Calculator { class RPN_Calculator {
static void line_clear(int TIMES) {
TIMES = Math.abs(TIMES);
if (TIMES > 0) {
for (int CLEAR_INSTANCES = 0; CLEAR_INSTANCES < TIMES; CLEAR_INSTANCES++) {
System.out.print(String.format("\033[2K",2));
System.out.print(String.format("\033[%dA",2)); // Move up
System.out.print(String.format("\033[2K",2));
System.out.print("\n");
};
};
}
static void handle_error(int ERROR_TYPE) { static void handle_error(int ERROR_TYPE) {
String ERROR_MESSAGE = ""; String ERROR_MESSAGE = "";
switch (ERROR_TYPE) { switch (ERROR_TYPE) {
case -1: case -1:
// Delete the previous line to allow users to edit it. // Delete the previous line to allow users to edit it.
System.out.print("\r"); line_clear(1);
break; break;
case -2: case -2:
ERROR_MESSAGE = "Memory exceeded."; ERROR_MESSAGE = "Memory exceeded.";
@ -61,10 +75,12 @@ class RPN_Calculator {
USER_INPUTS.add(USER_INPUT_CURRENT); USER_INPUTS.add(USER_INPUT_CURRENT);
} else { } else {
// Correct the mathematical operator. // Correct the mathematical operator.
System.out.print("\r\r"+ "> "+ USER_INPUT_CURRENT); line_clear(1);
USER_INPUTS.set(USER_INPUT_LENGTH - 1, USER_INPUT_LENGTH); System.out.print("> "+ USER_INPUT_CURRENT);
USER_INPUTS.set(USER_INPUT_LENGTH - 1, USER_INPUT_CURRENT);
}; };
} else if (USER_INPUT_CURRENT.isBlank() && USER_INPUTS.get(USER_INPUT_LENGTH - 1).getClass() == String.class) { } else if (USER_INPUT_CURRENT.isBlank() && USER_INPUTS.get(USER_INPUT_LENGTH - 1).getClass() == String.class) {
line_clear(1);
USER_INPUT_MORE = false; USER_INPUT_MORE = false;
} else { } else {
handle_error(-1); handle_error(-1);
@ -75,7 +91,6 @@ class RPN_Calculator {
// The user inputs a wrong code. Let the user edit it. // The user inputs a wrong code. Let the user edit it.
handle_error(-1); handle_error(-1);
}; };
} while (USER_INPUT_MORE == true); } while (USER_INPUT_MORE == true);
return (USER_INPUTS); return (USER_INPUTS);
@ -88,49 +103,47 @@ class RPN_Calculator {
String OPERATION = ""; String OPERATION = "";
double OPERATION_RESULT = 0; double OPERATION_RESULT = 0;
ArrayList<Double> NUMBERS_CURRENT = new ArrayList<Double>(); Queue<Double> NUMBERS_CURRENT = new ArrayDeque<Double>();
// TO DO: fix entries search // TO DO: fix entries search
if (ENTRIES_LIST_LENGTH > 1) { if (ENTRIES_LIST_LENGTH > 1) {
for (int ENTRY_CURRENT = 0; ENTRY_CURRENT < ENTRIES_LIST_LENGTH; ENTRY_CURRENT++) { for (int ENTRY_CURRENT = 0; ENTRY_CURRENT < ENTRIES_LIST_LENGTH; ENTRY_CURRENT++) {
if (String.valueOf(ENTRIES_LIST.get(ENTRY_CURRENT)).matches("[-+\\/*×÷]")) { if (String.valueOf(ENTRIES_LIST.get(ENTRY_CURRENT)).matches("[-+\\/*×÷]")) {
OPERATION = String.valueOf(ENTRIES_LIST.get(ENTRY_CURRENT)); OPERATION = String.valueOf(ENTRIES_LIST.get(ENTRY_CURRENT));
if (OPERATION_ITERATIONS <= 0) {OPERATION_RESULT = NUMBERS_CURRENT.get(0); NUMBERS_CURRENT.remove(0);}; if (OPERATION_ITERATIONS <= 0) {OPERATION_RESULT = NUMBERS_CURRENT.poll();};
switch (OPERATION) { switch (OPERATION) {
case "*": case "*":
case "×": case "×":
for (Double NUMBER_CURRENT : NUMBERS_CURRENT) { do {
OPERATION_RESULT *= NUMBER_CURRENT; OPERATION_RESULT *= NUMBERS_CURRENT.poll();
}; } while (!NUMBERS_CURRENT.isEmpty());
break; break;
case "/": case "/":
case "÷": case "÷":
for (Double NUMBER_CURRENT : NUMBERS_CURRENT) { Double NUMBER_CURRENT = NUMBERS_CURRENT.poll();
if (NUMBER_CURRENT != 0) { if (NUMBER_CURRENT != 0) {
OPERATION_RESULT /= NUMBER_CURRENT; OPERATION_RESULT /= NUMBER_CURRENT;
} else { } else {
handle_error(-3); handle_error(-3);
break; break;
};
}; };
break; break;
case "+": case "+":
for (Double NUMBER_CURRENT : NUMBERS_CURRENT) { do {
OPERATION_RESULT += NUMBER_CURRENT; OPERATION_RESULT += NUMBERS_CURRENT.poll();
}; } while (!NUMBERS_CURRENT.isEmpty());
break; break;
case "-": case "-":
for (Double NUMBER_CURRENT : NUMBERS_CURRENT) { do {
OPERATION_RESULT -= NUMBER_CURRENT; OPERATION_RESULT -= NUMBERS_CURRENT.poll();
}; } while (!NUMBERS_CURRENT.isEmpty());
break; break;
default: default:
break; break;
}; };
OPERATION_ITERATIONS++; OPERATION_ITERATIONS++;
NUMBERS_CURRENT.clear();
} else { } else {
NUMBERS_CURRENT.add((double) ENTRIES_LIST.get(ENTRY_CURRENT)); NUMBERS_CURRENT.add((double) ENTRIES_LIST.get(ENTRY_CURRENT));
}; };
@ -140,7 +153,6 @@ class RPN_Calculator {
return (OPERATION_RESULT); return (OPERATION_RESULT);
}; };
public static void main(String[] args) { public static void main(String[] args) {
// Initialize the input numbers. // Initialize the input numbers.
ArrayList<Object> NUMBERS_INPUT = new ArrayList<Object>(); ArrayList<Object> NUMBERS_INPUT = new ArrayList<Object>();