Test cases from group 3

exec/Brainfuck.0.inputc

+++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.

exec/Brainfuck.input.java

+/*
+ * Reads a brainfuck program (of no more than 1024 instructions) from stdin and executes it.
+ *
+ * Examples:
+ *     Read two chars, add their ASCII values, print the result: ,>,<[->+<]>.
+ *     Hello World: ++++++++[>++++[>++>+++>+++>+<<<<-]>+>+>->>+[<]<-]>>.>---.+++++++..+++.>>.<-.<.+++.------.--------.>>+.>++.
+ */
+
+class Brainfuck {
+
+    public int RIGHT; /* > */
+    public int LEFT; /* < */
+    public int INCREMENT; /* + */
+    public int DECREMENT; /* - */
+    public int WRITE; /* . */
+    public int READ; /* , */
+    public int LOOP_START; /* [ */
+    public int LOOP_END; /* ] */
+
+    public int NEWLINE; /* \n */
+
+    public int[] data;
+    public int dataSize;
+    public int dataPtr;
+
+    public int[] instructions;
+    public int instructionsSize;
+    public int instructionPtr;
+
+    public void init() {
+        RIGHT = 62;
+        LEFT = 60;
+        INCREMENT = 43;
+        DECREMENT = 45;
+        WRITE = 46;
+        READ = 44;
+        LOOP_START = 91;
+        LOOP_END = 93;
+
+        NEWLINE = 10;
+
+        dataSize = 30000;
+        data = new int[dataSize];
+        dataPtr = 0;
+        instructionsSize = 1024;
+        instructions = new int[instructionsSize];
+    }
+
+    public int read() throws Exception {
+        int result = NEWLINE;
+
+        while (result == NEWLINE) {
+            result = System.in.read();
+        }
+
+        return result;
+    }
+
+    public void fuck() throws Exception {
+        instructionPtr = 0;
+
+        while (instructionPtr < instructionsSize && instructions[instructionPtr] != 0) {
+            int instruction = instructions[instructionPtr];
+
+            if (instruction == RIGHT) {
+                dataPtr = (dataPtr + 1) % dataSize;
+            } else if(instruction == LEFT) {
+                dataPtr = (dataPtr - 1) % dataSize;
+            } else if (instruction == INCREMENT) {
+                data[dataPtr] = data[dataPtr] + 1;
+            } else if (instruction == DECREMENT) {
+                data[dataPtr] = data[dataPtr] - 1;
+            } else if (instruction == READ) {
+                data[dataPtr] = read();
+            } else if (instruction == WRITE) {
+                System.out.write(data[dataPtr]);
+                System.out.flush();
+            } else if (instruction == LOOP_START && data[dataPtr] == 0) {
+                int index = instructionPtr + 1;
+                int count = 0;
+
+                while (! (instructions[index] == LOOP_END && count == 0)) {
+                    if (instructions[index] == LOOP_START) {
+                        count = count + 1;
+                    } else if (instructions[index] == LOOP_END) {
+                        count = count - 1;
+                    }
+
+                    index = index + 1;
+                }
+
+                instructionPtr = index;
+            } else if (instruction == LOOP_END && data[dataPtr] != 0) {
+                int index = instructionPtr - 1;
+                int count = 0;
+
+                while (! (instructions[index] == LOOP_START && count == 0)) {
+                    if (instructions[index] == LOOP_END) {
+                        count = count + 1;
+                    } else if (instructions[index] == LOOP_START) {
+                        count = count - 1;
+                    }
+
+                    index = index - 1;
+                }
+
+                instructionPtr = index;
+            }
+
+            instructionPtr = instructionPtr + 1;
+        }
+    }
+
+    public static void main(String[] args) throws Exception {
+        Brainfuck fuck = new Brainfuck();
+        fuck.init();
+
+        int index = 0;
+        int instruction = System.in.read();
+
+        while (index < fuck.instructionsSize && instruction != fuck.NEWLINE) {
+            fuck.instructions[index] = instruction;
+            instruction = System.in.read();
+
+            index = index + 1;
+        }
+
+        fuck.fuck();
+    }
+}

exec/Brainfuck.input.java.out

+Hello World!

exec/Comparisons.java

+/*
+ * Expected output:
+ * 1
+ * 1
+ * 1
+ * 1
+ *
+ * 0
+ * 0
+ * 0
+ * 0
+ * 0
+ * 0
+ */
+
+class Comp {
+
+    public void printBoolean(boolean b) {
+        if (b) {
+            System.out.println(1);
+        } else {
+            System.out.println(0);
+        }
+    }
+
+    public static void main(String[] args) {
+        Comp a = new Comp();
+        Comp b = a;
+        Comp c = new Comp();
+        Comp d = null;
+
+        a.printBoolean(a == b);
+        a.printBoolean(b == a);
+        a.printBoolean(d == null);
+        a.printBoolean(null == null);
+
+        System.out.write(10); /* new line */
+
+        a.printBoolean(a == c);
+        a.printBoolean(b == c);
+        a.printBoolean(a == null);
+        a.printBoolean(b == null);
+        a.printBoolean(null == a);
+        a.printBoolean(null == b);
+    }
+}
\ No newline at end of file

exec/Comparisons.java.out

+1
+1
+1
+1
+
+0
+0
+0
+0
+0
+0

exec/Eratosthenes.java

+/*
+ * Expected output: All primes smaller than 100.
+ */
+
+class Eratosthenes {
+    
+    public int[] result;
+    public int count;
+    
+    public void sieve(int max) {
+        boolean[] sieve = new boolean[max];
+        count = 0;
+        
+        /* Initialize array. */
+        {
+            sieve[0] = false;
+            sieve[1] = false;
+            int i = 2;
+            
+            while (i < max) {
+                sieve[i] = true;
+                i = i + 1;
+            }
+        }
+        
+        /* Sieve of Eratosthenes algorithm. */
+        {
+            int prime = 2;
+            
+            while (prime < max) {
+                if (sieve[prime]) {
+                    count = count + 1;
+                    
+                    /* Deliberately unoptimized (strength reduction is possible). */
+                    int mult = prime;
+                    while (prime * mult < max) {
+                        sieve[prime * mult] = false;
+                        mult = mult + 1;
+                    }
+                }
+		
+                prime = prime + 1;
+            }
+        }
+        
+        result = new int[count];
+        
+        {
+            int i = 0;
+            int j = 0;
+            
+            while (i < max) {
+                if (sieve[i]) {
+                    result[j] = i;
+                    j = j + 1;
+                }
+                
+                i = i + 1;
+            }
+        }
+    }
+}
+
+class Main {
+    
+    public static void main(String[] args) throws Exception {
+        Eratosthenes e = new Eratosthenes();
+        e.sieve(100);
+        
+        {
+            int i = 0;
+            
+            while (i < e.count) {
+                System.out.println(e.result[i]);
+                i = i + 1;
+            }            
+        }
+    }
+}

exec/Eratosthenes.java.out

+2
+3
+5
+7
+11
+13
+17
+19
+23
+29
+31
+37
+41
+43
+47
+53
+59
+61
+67
+71
+73
+79
+83
+89
+97

exec/FloatArithmetic.java

+/*
+ * Expected output:
+ *
+ * 2^0
+ * *1
+ * .4194304
+ * 
+ * 2^-1
+ * *1
+ * .8360759
+ */
+
+class FloatArithmetic {
+
+    public int _2p8;
+    public int _2p11;
+    public int _2p16;
+    public int _2p23;
+    public int _2p24;
+
+    public int _int_min;
+
+    public int _f1_5;
+    public int _fNaN;
+    public int _seemlinglyArbitraryConstant;
+
+    public int _exponentBias;
+
+    public void init() {
+        _2p8 = 256;
+        _2p11 = 2048;
+        _2p16 = 65536;
+        _2p23 = 8388608;
+        _2p24 = 16777216;
+
+        _int_min = -2147483648;
+
+        _f1_5 = 1069547520;
+        _fNaN = -1;
+        _seemlinglyArbitraryConstant = 1597463007;
+
+        _exponentBias = 127;
+    }
+
+    public void print(int x) {
+        int TWO = 50;
+        int POWER = 94;
+        int MINUS = 45;
+        int TIMES = 42;
+        int DOT = 46;
+        int NEWLINE = 10;
+
+        int mantissa = mantissa(x) + _2p23;
+        int exponent = exponent(x) - _exponentBias - 23;
+        int sign = sign(x);
+
+        if (sign == 1) {
+            System.out.write(MINUS);
+        }
+
+        int oldExponent = exponent;
+        int mantissaPreDec = mantissa;
+
+        while (mantissaPreDec != 1) {
+            mantissaPreDec = mantissaPreDec / 2;
+            exponent = exponent + 1;
+        }
+
+        int mantissaPreDecShifted = mantissaPreDec;
+
+        while (oldExponent < exponent) {
+            mantissaPreDecShifted = mantissaPreDecShifted * 2;
+            oldExponent = oldExponent + 1;
+        }
+
+        System.out.write(TWO);
+        System.out.write(POWER);
+
+        System.out.println(exponent);
+
+        System.out.write(TIMES);
+
+        System.out.println(mantissaPreDec);
+        System.out.write(DOT);
+        System.out.println(mantissa % mantissaPreDecShifted);
+
+        System.out.write(NEWLINE);
+        System.out.flush();
+    }
+
+    public int buildFloat(int sign, int exponent, int mantissa) {
+        int result = exponent * _2p23 + mantissa;
+
+        if (sign == 1) {
+            result = negate(result);
+        }
+
+        return result;
+    }
+
+    public int negate(int x) {
+        return _int_min + x;
+    }
+
+    public int sign(int x) {
+        if (x >= 0) {
+            return 0;
+        } else {
+            return 1;
+        }
+    }
+
+    public int exponent(int x) {
+        if (x < 0) {
+            x = negate(x);
+        }
+
+        return x / _2p23 % _2p8;
+    }
+
+    public int mantissa(int x) {
+        if (x < 0) {
+            x = negate(x);
+        }
+
+        return x % _2p23;
+    }
+
+    public int div2(int x) {
+        int mantissa = mantissa(x);
+        int exponent = exponent(x);
+
+        if (exponent == 0) {
+            return 0;
+        } else {
+            return buildFloat(sign(x), exponent(x) - 1, mantissa(x));
+        }
+    }
+
+    public int add(int x, int y) {
+        int xm = mantissa(x);
+        int xe = exponent(x);
+        int xs = sign(x);
+
+        int ym = mantissa(y);
+        int ye = exponent(y);
+        int ys = sign(y);
+
+        int exponentDiff;
+        int exponent;
+        int mantissa;
+        int sign;
+        int lm;
+        int sm;
+
+        if (xe > ye) {
+            exponentDiff = xe - ye;
+            exponent = xe;
+            sign = xs;
+            lm = xm;
+            sm = ym;
+        } else {
+            exponentDiff = ye - xe;
+            exponent = ye;
+            lm = ym;
+            sm = xm;
+
+            if (xe < ye || xm < ym) {
+                sign = ys;
+            } else {
+                sign = xs;
+            }
+        }
+
+        lm = lm + _2p23;
+        sm = sm + _2p23;
+
+        while (exponentDiff > 0) {
+            sm = sm / 2;
+            exponentDiff = exponentDiff - 1;
+        }
+
+        if (xs == ys) {
+            mantissa = lm + sm;
+        } else {
+            mantissa = lm - sm;
+        }
+
+        if (mantissa / _2p24 == 1) {
+            mantissa = mantissa / 2;
+            mantissa = mantissa % _2p23;
+            exponent = exponent + 1;
+        } else {
+            mantissa = mantissa % _2p23;
+        }
+
+        return buildFloat(sign, exponent, mantissa);
+    }
+
+    public int square(int x) {
+        return mult(x, x);
+    }
+    
+    public int mult(int x, int y) {
+        int xm = mantissa(x);
+        int xe = exponent(x);
+        int xs = sign(x);
+
+        int ym = mantissa(y);
+        int ye = exponent(y);
+        int ys = sign(y);
+
+        xm = xm + _2p23;
+        ym = ym + _2p23;
+
+        int xm_lo = xm % _2p11;
+        int ym_lo = ym % _2p11;
+
+        int xm_hi = xm / _2p11;
+        int ym_hi = ym / _2p11;
+
+        int mantissa_lo = xm * ym;
+
+        int mantissa_hi = xm_hi * ym_hi
+            + xm_hi * ym_lo / _2p11
+            + xm_lo * ym_hi / _2p11
+            + (xm_lo * ym_hi + xm_lo * ym_hi + mantissa_lo / _2p11) / _2p11;
+
+        int exponent = xe + ye - _exponentBias;
+
+        int mantissa = mantissa_hi / 2;
+
+        if (mantissa / _2p24 == 1) {
+            mantissa = mantissa / 2;
+            mantissa = mantissa % _2p23;
+            exponent = exponent + 1;
+        } else {
+            mantissa = mantissa % _2p23;
+        }
+
+        return buildFloat((xs + ys) % 2, exponent, mantissa);
+    }
+
+    public int invSqrt(int num) {
+        if (num <= 0) {
+            return _fNaN;
+        }
+
+        int x2 = div2(num);
+        int y = _seemlinglyArbitraryConstant - num / 2;
+
+        y = mult(y, add(_f1_5, negate(mult(x2, square(y)))));
+
+        return y;
+    }
+
+    public static void main(String[] args) {
+        FloatArithmetic fa = new FloatArithmetic();
+        fa.init();
+        
+        fa.print(fa.mult(1065353216, 1069547520)); /* 1.0 * 1.5 */
+        fa.print(fa.invSqrt(1065353216)); /* 1 / sqrt(1.0) */
+    }
+}

exec/FloatArithmetic.java.out

+2^0
+*1
+.4194304
+
+2^-1
+*1
+.8360759
+

exec/MultidimensionalArrays.java

+/* Expected output:
+ *
+ * 0
+ * 
+ * 0
+ * 1
+ * 
+ * 0
+ * 1
+ * 2
+ * 
+ * 0
+ * 1
+ * 2
+ * 3
+ * 
+ * 0
+ * 1
+ * 2
+ * 3
+ * 4
+ *
+ */
+
+class Test {
+
+    public static void main(String[] args) {
+
+        int[][] arr = new int[5][];
+
+        {
+            int i = 0;
+            while (i < 5) {
+                arr[i] = new int[i + 1];
+                i = i + 1;
+            }
+        }
+
+        {
+            int i = 0;
+            while (i < 5) {
+                int j = 0;