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OOP_IO-2x_2023-mirror
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add lab2

This commit is contained in:
Oleh 2023-03-23 19:51:48 +01:00
parent 4417dfe95a
commit ab62df0a7f
3 changed files with 51 additions and 84 deletions
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58
src/Lab1.java
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@ -1,58 +0,0 @@
public class Lab1 {
public static void main(String[] args) {
// char c = 'a' + '1';
char c = 97;
// char c = '1';
System.out.println(c);
System.out.println((int) c);
c++;
System.out.println(c);
System.out.println((int) c);
System.out.println((double)'1'/'3');
// System.out.println( (double) 0 / 0 );
// System.out.println( Math.sqrt(-1) );
double s = 0;
/*for (int i = 1; i <= 3; i++) { // 1) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> i = 1, 2) <EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <= 3, 3) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 䳿 <EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>,
System.out.println(i); // 4) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD> <EFBFBD><EFBFBD> 1, 5) <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <EFBFBD><EFBFBD> <EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> 2
// s = s + i;
s += i;
}*/
/*int[] array = new int[2];
for (int i = 0; i < array.length; i++) {
}*/
final int A = -3;
final int B = 0;
final int N = 2;
final int M = 2;
final int C = 1;
// boolean wasDivisionByZero = false;
// todo char
// todo[clear code] think about avoiding brackets
if ((A <= -C && -C <= N) || (B <= 0 && 0 <= M)) {
System.out.println("Division by zero!");
return;
}
/*myLabel:*/for (int i = A; i <= N /*&& !wasDivisionByZero*/; i++) {
/*if (i + C == 0) { // todo optimize
System.out.println("Division by zero!");
wasDivisionByZero = true;
break; //todo flag vs return;
}*/
for (int j = B; j <= M; j++) {
/*if (j == 0) {
System.out.println("Division by zero!");
return;
// wasDivisionByZero = true;
// break myLabel;
}*/
s += (double) (i / j) / (i + C);
}
}
// if (!wasDivisionByZero) {
System.out.println("s = " + s);
// }
}
}

26
src/Lab2.java
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@ -1,26 +0,0 @@
public class Lab2 {
public static void main(String[] args) {
int[] array = {1, 2, 3};
/*for (int i = 0; i < array.length; i++) {
if (i % 2 == 0) {
System.out.println("!" + array[i]);
} else {
System.out.println("?" + array[i]);
}
}*/
for (int i = 0; i < array.length; i+=2) {
System.out.println("!" + array[i]);
}
for (int i = 1; i < array.length; i+=2) {
System.out.println("?" + array[i]);
}
// зубчасті матриці
int[][] matrix = {
{1, 2},
{3}
};
}
}

51
src/lab2.java Normal file
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@ -0,0 +1,51 @@
public class lab2 {
public static void main(String[] args){
// 2131 % 7 = 3; C7 = int
int[][] matrix = {
{1,2,3,4,5},
{1,3,5,7,9},
{10,1,20,2,5}
};
int rows = matrix.length;
int column = matrix[0].length;
System.out.println("Матриця:");
for(int i = 0; i < rows; i++){
for (int j = 0; j < column; j++){
System.out.print(matrix[i][j]+" ");
}
System.out.println();
}
System.out.println();
// 2131 % 5 = 1; C5 = транспортування;
int[][] transportMatrix = new int[column][rows];
for(int i = 0; i < rows; i++){
for(int j = 0; j < column; j++){
transportMatrix[j][i] = matrix[i][j];
}
}
System.out.println("Транспонована матриця:");
for (int i = 0; i < column; i++){
for (int j = 0; j < rows; j++){
System.out.print(transportMatrix[i][j]+" ");
}
System.out.println();
}
System.out.println();
// 2131 % 11 = 8; C11 = Знайти середнє значення елементів кожного рядка матриці;
int sum;
for(int i = 0; i < rows; i++){
sum = 0;
for(int j = 0; j < column; j++){
sum += matrix[i][j];
}
System.out.println("Середнє арифметичне " + (i+1) + " строки = " + (float)sum/column);
}
}
}