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BubbleSort.java
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75 lines (66 loc) · 1.95 KB
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public class BubbleSort {
public int basicAscending(int[] collection) {
int collectionLen = collection.length;
int comparisons = 0;
for (int i = 0; i < collectionLen; i++) {
for (int j = 0; j < (collectionLen - 1); j++) {
comparisons++;
if (collection[j] > collection[j + 1]) {
int temp = collection[j];
collection[j] = collection[j + 1];
collection[j + 1] = temp;
}
}
}
return comparisons;
}
public int basicDescending(int[] collection) {
int collectionLen = collection.length;
int comparisons = 0;
for (int i = 0; i < collectionLen; i++) {
for (int j = 0; j < (collectionLen - 1); j++) {
comparisons++;
if (collection[j] < collection[j + 1]) {
int temp = collection[j];
collection[j] = collection[j + 1];
collection[j + 1] = temp;
}
}
}
return comparisons;
}
public int endAfterNoSwapsAscending(int[] collection) {
int collectionLen = collection.length;
boolean isSwapped = true;
int comparisons = 0;
int i = 0;
for (i = 0; (i < collectionLen) && (isSwapped); i++) {
isSwapped = false;
for (int j = 0; j < (collectionLen - 1); j++) {
comparisons++;
if (collection[j] > collection[j + 1]) {
int temp = collection[j];
collection[j] = collection[j + 1];
collection[j + 1] = temp;
isSwapped = true;
}
}
}
return comparisons;
}
public int optimisedAscending(int[] collection) {
int collectionLen = collection.length;
int comparisons = 0;
for (int i = 0; i < collectionLen; i++) {
for (int j = 0; j < (collectionLen - 1 - i); j++) {
comparisons++;
if (collection[j] > collection[j + 1]) {
int temp = collection[j];
collection[j] = collection[j + 1];
collection[j + 1] = temp;
}
}
}
return comparisons;
}
}