From 8a4cbcd69cbddbb0d226eb458b24791101a80da6 Mon Sep 17 00:00:00 2001
From: Hadllee <iliagorbunov71@gmail.com>
Date: Sun, 30 Mar 2025 22:38:28 +0700
Subject: [PATCH 1/4] Lab2 done
---
src/Main.java | 69 +++++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 69 insertions(+)
diff --git a/src/Main.java b/src/Main.java
index 9c3df03..26d6e60 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -1,5 +1,74 @@
+import java.util.Arrays;
+
public class Main {
+ public static double calcIntegral(double start, double end, int split, int a, int b, int c){
+ if (end == start){
+ return 0.0000;
+ }
+ double interval = (Math.abs(end- start))/ split;
+ double currentIntegral = 0;
+ for (double i = start; i <= end; i += interval){
+ double nextI = i + interval;
+ double square1 = a*i*i + b*i +c;
+ double square2 = a*nextI*nextI + b*nextI +c;
+ double sum = (square1 + square2)/2;
+ double area = sum * interval;
+ currentIntegral+= area;
+ }
+ return currentIntegral;
+ }
+
+ public static double[][] makeTableData(int start, double end, int split, int a, int b, int c, int size){
+ double[][] integralArray = new double[size+1][size+1];
+ double length = (end - start)/(size - 1);
+
+ for (int i = 0; i <= size; i++) {
+ for (int j = 0; j <= size; j++) {
+ if (i == 0 && j == 0){
+ integralArray[i][j] = 0.0000;
+ }
+ else if (i == 0){
+ integralArray[i][j] = j == 1 ? start : start + (j-1)*length;
+ }
+ else if (j == 0){
+ integralArray[i][j] = i == 1 ? start : start + (i-1)*length;
+ }
+ else{
+ if (start + (j-1)*length < start + (i-1)*length){
+ integralArray[i][j] = calcIntegral(start + (j-1)*length, start + (i-1)*length, split, a, b, c);
+
+ }
+ else {
+ integralArray[i][j] = calcIntegral(start + (i-1)*length, start + (j-1)*length, split, a, b, c);
+ }
+ }
+ }
+ }
+ return integralArray;
+ }
+
+ public static void consoleTable(double[][] arr){
+ for (int i = 0; i < arr.length; i++) {
+ int n = 0;
+ for (int j = 0; j < arr[i].length; j++) {
+ n += String.format("%10.4f", arr[i][j]).length();
+ System.out.print(String.format("%9.4f", arr[i][j]) + " ");
+ if (j == 0){
+ System.out.print("|");
+ }
+ }
+ System.out.println();
+ System.out.print("_".repeat(n));
+ System.out.println();
+ }
+
+ }
public static void main(String[] args) {
+ consoleTable(makeTableData(-5, 5, 100000, 1, 0, -3, 11));
+
+
+
}
+
}
\ No newline at end of file
--
GitLab
From 2c0b2304c3c4ebcabbae586f47831232cfd0d22d Mon Sep 17 00:00:00 2001
From: Hadllee <iliagorbunov71@gmail.com>
Date: Sun, 30 Mar 2025 22:39:00 +0700
Subject: [PATCH 2/4] Lab2 done
---
src/Main.java | 2 --
1 file changed, 2 deletions(-)
diff --git a/src/Main.java b/src/Main.java
index 26d6e60..726786a 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -1,5 +1,3 @@
-import java.util.Arrays;
-
public class Main {
public static double calcIntegral(double start, double end, int split, int a, int b, int c){
if (end == start){
--
GitLab
From 32c616ab4746f7036c8417fa1458b742fd6bc12a Mon Sep 17 00:00:00 2001
From: Hadllee <iliagorbunov71@gmail.com>
Date: Sun, 30 Mar 2025 22:50:29 +0700
Subject: [PATCH 3/4] Lab2 done
---
src/Main.java | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/src/Main.java b/src/Main.java
index 726786a..287ad23 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -49,11 +49,17 @@ public class Main {
for (int i = 0; i < arr.length; i++) {
int n = 0;
for (int j = 0; j < arr[i].length; j++) {
- n += String.format("%10.4f", arr[i][j]).length();
- System.out.print(String.format("%9.4f", arr[i][j]) + " ");
- if (j == 0){
+ if (i == 0 && j == 0){
+ System.out.print(" ".repeat(10));
System.out.print("|");
}
+ else {
+ System.out.print(String.format("%9.4f", arr[i][j]) + " ");
+ if (j == 0){
+ System.out.print("|");
+ }
+ }
+ n += String.format("%10.4f", arr[i][j]).length();
}
System.out.println();
System.out.print("_".repeat(n));
--
GitLab
From 0d7b7a9651068af8347d0f5e4469577633975e5e Mon Sep 17 00:00:00 2001
From: Hadllee <iliagorbunov71@gmail.com>
Date: Mon, 31 Mar 2025 15:28:46 +0700
Subject: [PATCH 4/4] Lab2 done
---
src/Main.java | 25 ++++++++++++++++++++-----
1 file changed, 20 insertions(+), 5 deletions(-)
diff --git a/src/Main.java b/src/Main.java
index 287ad23..8fe0887 100644
--- a/src/Main.java
+++ b/src/Main.java
@@ -1,3 +1,4 @@
+import java.util.Scanner;
public class Main {
public static double calcIntegral(double start, double end, int split, int a, int b, int c){
if (end == start){
@@ -16,7 +17,7 @@ public class Main {
return currentIntegral;
}
- public static double[][] makeTableData(int start, double end, int split, int a, int b, int c, int size){
+ public static double[][] makeTableData(double start, double end, int split, int a, int b, int c, int size){
double[][] integralArray = new double[size+1][size+1];
double length = (end - start)/(size - 1);
@@ -68,10 +69,24 @@ public class Main {
}
public static void main(String[] args) {
- consoleTable(makeTableData(-5, 5, 100000, 1, 0, -3, 11));
-
-
-
+ Scanner in = new Scanner(System.in);
+ System.out.println("Введите коэффициенты уравнения a, b, c:");
+ System.out.print("a = ");
+ int a = in.nextInt();
+ System.out.print("b = ");
+ int b = in.nextInt();
+ System.out.print("c = ");
+ int c = in.nextInt();
+ System.out.println("Введите интервал интегрирования:");
+ System.out.print("РћС‚ ");
+ double start = in.nextDouble();
+ System.out.print("До ");
+ double end = in.nextDouble();
+ System.out.println("Размер таблицы");
+ int size = in.nextInt();
+ System.out.println("Число разбиений");
+ int split = in.nextInt();
+ consoleTable(makeTableData(start, end, split, a, b, c, size));
}
--
GitLab