java-Bubble Sort

1. Printing

print--printing, no line break, add line breaks as required

println--Print once and wrap it up.

printf--printing, inherit C speech format, can be formatted output

Line break

' \ R ' is a carriage return, ' \ n ' is a newline, ' \ t ' is a tab

Method of use: 1. SYSTEM.OUT.PRINTLN ("Thank you for your support \ n");

2.SYSTEM.OUT.PRINTLN (i+ "*" +j=i*j+ "\ n");

2. Bubble sort

Used for array sorting, comparing the first and neighboring elements, sequentially comparing the number of adjacent neighbors, and the last one being the maximum number.

If there is n number, then the N-1 cycles;

Each cycle, 22 comparisons, the last element is no longer compared with the previous one.

for (int i=0;i<arr.length-1;i++) {
for (int j=0;j<arr.length-1-i;j++) {
if (Arr[j]>arr[j+1]) {
TEMP=ARR[J];
ARR[J]=ARR[J+1];
Arr[j+1]=temp;
}

}

}

3. Array new

int arr[]=new int[5];

4.Scanner input

Import Scanner Class Package

Sacnner input= New Scanner (system.in);

Arr[i]=input.nextint ();

java-Bubble Sort