Java sorting algorithm: Bubble sorting algorithm implementation (code)

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Bubble sorting method is one of the most basic sorting methods. The operating mechanism of bubble sorting method is a simple sorting achieved by looping through elements and adjusting the order of adjacent elements. method. The essence of bubble sort is to compare two adjacent elements and then swap their positions in ascending or descending order.

The following is the code for descending bubble sorting:

public class Training {
	
	public static void main(String[] args) {
        int [] array = {3,2,5,1,4};
		for (int time = 1; loopTime < array.length; loopTime++) {
			for (int i = 0,temp = 0; i < array.length-loopTime; i++) {
				if (array[i+1]>array[i]) {
					temp = array[i+1];
					array[i+1] = array[i];
					array[i] = temp;
				}
			}
		}
		for (int i = 0; i < array.length; i++) {
			System.out.println(array[i]);
		}
    }
}

Thefor loops each time Looping once will place larger data in the appropriate position, such as loopTime=1; then the largest data will be placed at the end;loopTime=2; then place the second largest data at the penultimate element position; array.length-loopTime :From the perspective of improving the performance of the code, reduce the number of "excess " cycles in this loop;

The following is the running result:

##Of course, there is also bubble sorting in ascending order. In fact, just change "if (array[i 1]>array[i] )" can be changed to array[i 1]

for (int i = 0; i < array.length-time; i++) {
	if (array[i+1]<array[i]) {
		temp = array[i+1];
		array[i+1] = array[i];
		array[i] = temp;
	}
}

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