first commit

IntroductiontoComputerScience_D684/Algorithms/SequentialSearch.java

@@ -0,0 +1,31 @@
+import java.util.Scanner;
+
+/**
+ * SequentialSearch
+ */
+public class SequentialSearch {
+
+  public static void main(String[] args) {
+    Scanner sc = new Scanner(System.in);
+    System.out.println("check the number x: ");
+    int input = sc.nextInt();
+    int[] arr = { 1, 3, 5, 6, 7, 21, 32, 42, 55, 66, 76, 83, 90 };
+
+    int position = 0;
+    boolean found = false;
+
+    while (position < arr.length && !found) {
+      if (arr[position] == input) {
+        found = true;
+      } else {
+        position = position + 1;
+      }
+    }
+    if (found) {
+      System.out.println(input + " found in position " + position);
+    } else {
+      System.out.println(input + " Not found in the array");
+    }
+    sc.close();
+  }
+}

IntroductiontoComputerScience_D684/Algorithms/SequentialSearchSortedarray.java

@@ -0,0 +1,26 @@
+/**
+ * SequentialSearchSortedarray
+ */
+public class SequentialSearchSortedarray {
+
+  public static void main(String[] args) {
+    int[] sortedArray = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
+    int index = SeqSearch(sortedArray, 53);
+    if (index != -1) {
+      System.out.println("Element found at index " + index);
+    } else {
+      System.out.println("Element not found");
+    }
+
+  }
+
+  public static int SeqSearch(int[] arr, int value) {
+    for (int i = 0; i < arr.length; i++) {
+      if (arr[i] == value) {
+        return i;
+      }
+    }
+    return -1;
+  }
+
+}

IntroductiontoComputerScience_D684/Algorithms/Squareroot.java

@@ -0,0 +1,27 @@
+import java.util.Scanner;
+
+/**
+ * Squareroot
+ */
+public class Squareroot {
+
+  public static void main(String[] args) {
+    Scanner sc = new Scanner(System.in);
+    System.out.println("enter your guess");
+    double square = sc.nextDouble();
+
+    // initial the difference
+    double epsilon = 1;
+    // initial guess
+    double guess = square / 2.0;
+
+    while (epsilon > 0.001) {
+      double newGuess = (guess + square / guess) / 2.0;
+      epsilon = Math.abs(square - guess * guess);
+      guess = newGuess;
+    }
+
+    System.out.println("The sqaure root of " + square + " is " + guess);
+    sc.close();
+  }
+}