commit 80c493add47282ec59af96e68ff171dd65f28352
Author: Bo Pan <bpan@barrx.space>
Date:   Wed Jun 4 14:23:56 2025 -0600

    initial commit as a maven project

diff --git a/pom.xml b/pom.xml
new file mode 100644
index 0000000..e1fc4e4
--- /dev/null
+++ b/pom.xml
@@ -0,0 +1,16 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.barrx.practice</groupId>
+    <artifactId>dspractice</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>17</maven.compiler.source>
+        <maven.compiler.target>17</maven.compiler.target>
+    </properties>
+
+</project>
\ No newline at end of file
diff --git a/src/main/java/com/barrx/practice/Main.java b/src/main/java/com/barrx/practice/Main.java
new file mode 100644
index 0000000..536f568
--- /dev/null
+++ b/src/main/java/com/barrx/practice/Main.java
@@ -0,0 +1,39 @@
+package com.barrx.practice;
+
+public class Main {
+    public static void main(String[] args) {
+        // System.out.println("Hello world!");
+
+        int maxSize = 100;
+        OrderedArray arr;
+
+        arr = new OrderedArray(maxSize);
+
+        arr.insert(77);
+        arr.insert(99);
+        arr.insert(44);
+        arr.insert(55);
+        arr.insert(22);
+        arr.insert(88);
+        arr.insert(11);
+        arr.insert(00);
+        arr.insert(66);
+        arr.insert(33);
+
+        int searchKey = 55;
+        if (arr.find(searchKey) != arr.size()) {
+            System.out.println("Found " + searchKey);
+        }
+        else {
+            System.out.println("Can't find " + searchKey);
+        }
+            
+        arr.display();
+
+        arr.delete(00);
+        arr.delete(55);
+        arr.delete(99);
+
+        arr.display();
+    }
+}
\ No newline at end of file
diff --git a/src/main/java/com/barrx/practice/OrderedArray.java b/src/main/java/com/barrx/practice/OrderedArray.java
new file mode 100644
index 0000000..2e27285
--- /dev/null
+++ b/src/main/java/com/barrx/practice/OrderedArray.java
@@ -0,0 +1,75 @@
+package com.barrx.practice;
+
+public class OrderedArray {
+    private long[] a;
+    private int nElems;
+
+    public OrderedArray(int max) {
+        a = new long[max];
+        nElems = 0;
+    }
+
+    public int size() {
+        return nElems;
+    }
+
+    public int find(long searchKey) {
+        int lowerBound = 0;
+        int upperBound = nElems - 1;
+        int curIn;
+
+        while (true) {
+            curIn = (lowerBound + upperBound) / 2;
+            if (a[curIn] == searchKey) {
+                return curIn;
+            }
+            else if (lowerBound > upperBound) {
+                return nElems;
+            }
+            else {
+                if (a[curIn] < searchKey) {
+                    lowerBound = curIn + 1;
+                }
+                else {
+                    upperBound = curIn - 1;
+                }
+            }
+        }
+    }
+
+    public void insert(long value) {
+        int j;
+
+        for (j = 0; j < nElems; j++) {
+            if (a[j] > value) {
+                break;
+            }
+        }
+        for (int k = nElems; k > j; k--) {
+            a[k] = a[k - 1];
+        }
+        a[j] = value;
+        nElems++;
+    }
+
+    public boolean delete(long value) {
+        int j = find(value);
+        if (j == nElems) {
+            return false;
+        }
+        else {
+            for (int k = j; k < nElems; k++) {
+                a[k] = a[k + 1];
+            }
+            nElems --;
+            return true;
+        }
+    }
+
+    public void display() {
+        for (int j = 0; j < nElems; j++) {
+            System.out.print(a[j] + " ");
+        }
+        System.out.println("");
+    }
+}
diff --git a/target/classes/com/barrx/practice/Main.class b/target/classes/com/barrx/practice/Main.class
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diff --git a/target/classes/com/barrx/practice/OrderedArray.class b/target/classes/com/barrx/practice/OrderedArray.class
new file mode 100644
index 0000000..8f96e1c
Binary files /dev/null and b/target/classes/com/barrx/practice/OrderedArray.class differ