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Artemis: Refactor and Optimize Methods in Double Class for Performance Improvements #43

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Artemis: Refactor and Optimize Methods in Double Class for Performance Improvements #43

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38 changes: 16 additions & 22 deletions app/src/main/java/control/Double.java
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Original file line number Diff line number Diff line change
Expand Up @@ -10,11 +10,7 @@ public class Double {
public static int sumSquare(int n) {
int sum = 0;
for (int i = 0; i < n; i++) {
for (int j = 0; j < n; j++) {
if (i == j) {
sum = sum + i * j;
}
}
sum += i * i;
}
return sum;
}
Expand All @@ -27,10 +23,8 @@ public static int sumSquare(int n) {
*/
public static int sumTriangle(int n) {
int sum = 0;
for (int i = 0; i < n + 1; i++) {
for (int j = 0; j < i; j++) {
sum = sum + j;
}
for (int i = 1; i <= n; i++) {
sum += i * (i - 1) / 2;
}
return sum;
}
Expand All @@ -45,20 +39,21 @@ public static int sumTriangle(int n) {
*/
public static int countPairs(int[] arr) {
int count = 0;
for (int i = 0; i < arr.length; i++) {
int nDuplicates = 0;
for (int j = 0; j < arr.length; j++) {
if (arr[i] == arr[j]) {
nDuplicates++;
}
}
if (nDuplicates == 2) {
int[] counts = new int[1001]; // Assuming values are within 0-1000

for (int num : arr) {
counts[num]++;
}

for (int c : counts) {
if (c == 2) {
count++;
}
}
return count / 2;
}


/**
* Counts the number of instances where the values at the same index are equal
*
Expand All @@ -69,11 +64,10 @@ public static int countPairs(int[] arr) {
*/
public static int countDuplicates(int[] arr0, int[] arr1) {
int count = 0;
for (int i = 0; i < arr0.length; i++) {
for (int j = 0; j < arr1.length; j++) {
if (i == j && arr0[i] == arr1[j]) {
count++;
}
int minLength = Math.min(arr0.length, arr1.length);
for (int i = 0; i < minLength; i++) {
if (arr0[i] == arr1[i]) {
count++;
}
}
return count;
Expand Down