3rd semester files

3rd-Semester-Fall-2022/PDS/Homework03/.vscode/settings.json

@@ -0,0 +1,5 @@
+{
+    "files.associations": {
+        "string": "cpp"
+    }
+}

3rd-Semester-Fall-2022/PDS/Homework03/.vscode/tasks.json

@@ -0,0 +1,28 @@
+{
+    "tasks": [
+        {
+            "type": "cppbuild",
+            "label": "C/C++: g++ build active file",
+            "command": "/usr/bin/g++",
+            "args": [
+                "-fdiagnostics-color=always",
+                "-g",
+                "${file}",
+                "-o",
+                "${fileDirname}/${fileBasenameNoExtension}"
+            ],
+            "options": {
+                "cwd": "${fileDirname}"
+            },
+            "problemMatcher": [
+                "$gcc"
+            ],
+            "group": {
+                "kind": "build",
+                "isDefault": true
+            },
+            "detail": "Task generated by Debugger."
+        }
+    ],
+    "version": "2.0.0"
+}

3rd-Semester-Fall-2022/PDS/Homework03/HW03_Aidan_Sharpe.cpp

@@ -0,0 +1,110 @@
+/****************************************************************
+* Name: Aidan Sharpe
+* Course: Principles of Data Structures
+* Class: CS04225
+* Assignment Date: October 10, 2022
+* File Name: HW03_Aidan_Sharpe.cpp
+*****************************************************************
+* ID: Homework 3 Problem 1
+* Purpose: Read, sort and write, ints from text files
+*****************************************************************/
+
+#include <iostream>
+#include <fstream>
+#include <string>
+
+/// @brief sort a dynamically allocated array in-place
+/// @param arrptr pointer to first element in dynamically allocated array
+/// @param len length of dynamically allocated array
+/// @return true if the array was sorted successfully
+bool dynamicArraySelectionSort(int *arrptr, int len);
+
+int main()
+{
+    std::string fname;
+    std::string line;
+    std::ifstream readfile;
+    std::ofstream writefile;
+    std::cout << "Input file name:\n";
+    std::cin >> fname;
+    readfile.open(fname);
+    std::getline(readfile, line);
+
+    int num_count = std::stoi(line);
+    std::cout << "Reading " << num_count << " numbers...\n";
+
+    int *nums_ptr;
+    nums_ptr = new int[num_count];
+
+
+    // read numbers from file
+    // numbers are multi-digit and separated by either a space or newline char
+    int idx = 0;
+    while (std::getline(readfile, line))
+    {
+        std::string snum;
+        for (char c : line)
+        {
+            if (isdigit(c))
+                snum.push_back(c);
+            else if (c == ' ' || c == '\n')
+            {
+                *(nums_ptr + idx) = std::stoi(snum);
+                snum = "";
+                idx++;  
+            } 
+        }
+    }
+    readfile.close();
+    std::cout << "Done reading values.\n";
+
+    // sort numbers
+    std::cout << "Sorting values...\n";
+    dynamicArraySelectionSort(nums_ptr, num_count);
+    
+    std::cout << "Enter filename for sorted values:\n";
+    std::cin >> fname;
+    writefile.open(fname);
+
+    // write sorted nums to file with 8 columns
+    std::cout << "Writing values to " << fname << "...\n";
+    for (int i = 0; i < num_count/8 + 1; i++)
+    {
+        for (int j = 0; j < 8 && i*8 + j < num_count; j++)
+            writefile << *(nums_ptr + i*8 + j) << " ";
+        writefile << "\n";
+    }
+    writefile.close();
+    std::cout << "Done writing values.\n";
+    
+    // clear dynamically allocated pointers
+    delete [] nums_ptr;
+    nums_ptr = nullptr;
+
+    return 0;
+}
+
+
+bool dynamicArraySelectionSort(int *arrptr, int len)
+{
+    int temp;           // throw-away variable for swapping
+    int mindex = 0;     // index of the smallest number
+    for (int i = 0; i < len - 1; i++)
+    {
+        mindex = i;
+        // find index of smallest element
+        for (int j = i; j < len; j++)
+            if (*(arrptr + j) < *(arrptr + mindex))
+                mindex = j;
+
+        // swap element at i with smallest element
+        if (mindex > i)
+        {
+            temp = *(arrptr + mindex);
+            *(arrptr + mindex) = *(arrptr + i);
+            *(arrptr + i) = temp;
+        }
+    }
+    return true;
+}
+

3rd-Semester-Fall-2022/PDS/Homework03/HW03_input1.txt

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