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authorRossTheRoss <mstrapp@protonmail.com>2019-11-03 12:01:48 -0600
committerRossTheRoss <mstrapp@protonmail.com>2019-11-03 12:01:48 -0600
commit13945160822dd3d16bdfa7c24abefeffb7a5be61 (patch)
treee589db732231a4d1aac7c450aefa96248ad14616 /csci1913/Java
parentFinish things (diff)
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-rw-r--r--csci1913/Java/lab6/Polygon.java2
-rw-r--r--csci1913/Java/lab6/lab6_strap012.java2
-rw-r--r--csci1913/Java/lab6/tests6.java2
-rw-r--r--csci1913/Java/lab7_strap012.java62
-rw-r--r--csci1913/Java/notes/sequence.java41
5 files changed, 67 insertions, 42 deletions
diff --git a/csci1913/Java/lab6/Polygon.java b/csci1913/Java/lab6/Polygon.java
index 643dbb3..7f025fe 100644
--- a/csci1913/Java/lab6/Polygon.java
+++ b/csci1913/Java/lab6/Polygon.java
@@ -1,4 +1,4 @@
-
+package lab6;
class Polygon
{
diff --git a/csci1913/Java/lab6/lab6_strap012.java b/csci1913/Java/lab6/lab6_strap012.java
index 5062a60..e2c96e4 100644
--- a/csci1913/Java/lab6/lab6_strap012.java
+++ b/csci1913/Java/lab6/lab6_strap012.java
@@ -1,3 +1,5 @@
+package lab6;
+
class Rectangle extends Polygon {
public Rectangle(int l, int w) {
super(4, l, w, l, w);
diff --git a/csci1913/Java/lab6/tests6.java b/csci1913/Java/lab6/tests6.java
index 91b82ca..fc98648 100644
--- a/csci1913/Java/lab6/tests6.java
+++ b/csci1913/Java/lab6/tests6.java
@@ -1,3 +1,5 @@
+package lab6;
+
// SHAPES. Public tests for the classes RECTANGLE and SQUARE. Comments show
// what each test must print, and how many points it is worth.
diff --git a/csci1913/Java/lab7_strap012.java b/csci1913/Java/lab7_strap012.java
new file mode 100644
index 0000000..cfb89ed
--- /dev/null
+++ b/csci1913/Java/lab7_strap012.java
@@ -0,0 +1,62 @@
+class BinaryVsLinear
+{
+
+ private static int linearSearch(int key, int[] keys)
+ {
+ int searchCount = 0;
+ for (int i=0; i<keys.length; i+=1) {
+ searchCount += 1;
+ if (keys[i]==key) {
+ return searchCount;
+ }
+ } return -1;
+ }
+
+
+ private static int binarySearch(int key, int[] keys)
+ {
+ int left=0; int right=(keys.length-1); int mid=0;
+ int searchCount=0;
+ while (true) {
+ if (left>right) {
+ mid=-1;
+ break;
+ } else {
+ mid=(left+right)/2;
+ searchCount += 2;
+ if (key<keys[mid]) {
+ right=mid-1;
+ }
+ else if (key>keys[mid]) {
+ left=mid+1;
+ } else {
+ break;
+ }
+ }
+ } return searchCount;
+ }
+
+ public static void main(String[] args)
+ {
+ for (int length = 1; length <= 30; length += 1)
+ {
+ int[] array = new int[length];
+ for (int index = 0; index < length; index += 1)
+ {
+ array[index] = index;
+ }
+
+ double linearTotal = 0.0;
+ double binaryTotal = 0.0;
+ for (int element = 0; element < length; element += 1)
+ {
+ linearTotal += linearSearch(element, array);
+ binaryTotal += binarySearch(element, array);
+ }
+
+ double linearAverage = linearTotal / length;
+ double binaryAverage = binaryTotal / length;
+ System.out.println(length + " " + linearAverage + " " + binaryAverage);
+ }
+ }
+}
diff --git a/csci1913/Java/notes/sequence.java b/csci1913/Java/notes/sequence.java
deleted file mode 100644
index ac8f487..0000000
--- a/csci1913/Java/notes/sequence.java
+++ /dev/null
@@ -1,41 +0,0 @@
-class Sequence<Base> {
- private Base[] bases;
- private int count;
-
- public int find (Base base){
- if (base == null) {
- for (int i=0; i<count; i+=1) {
- if (bases[i] == null) {
- return index;
- }
- }
- } else {
- for (int i=0; i<count; i+=1) {
- if (Base.equals(bases[i])) {
- return index;
- }
- }
- } return -1; //Fail case
- }
-//While loop is basically an infinitely nexted series of if statements
- //(It's called loop unrolling)
-//Sometimes the first execution is special (see below)
- public String toString() {
- StringBuilder builder = new StringBuilder();
- builder.append('[');
- if (count > 0) {
- builder.append(bases[0].toString())
- //Add a helper fo the null pointer
- for (int i = 1; i < count; i += 1) {
- builder.append(" ,");
- //Add a helper to not dereference the null pointer
- builder.append(bases[i].toString());
- }
- } builder.append(']')
- return builder.toString();
- }
-//Arrays as sequences
- //Add O(n) needed a copy loop
- //Delete O(n) needed a copy loop - first element
- //Find O(n) used linear search
- //Can we go faster? (Yes, probably) \ No newline at end of file