I am having trouble understanding how this code works could someone break it down for me

//search a sorted list for a certain number

int[]list= new int[20];

int n;

//unsorted list

for(int k=0;k

//insert a random number from 0-100 into list so that the list is sorted

n =(int) (101*Math.random());

list[k]=n;

}

System.out.println("Unsorted list");

for(int x: list)

System.out.print(x+"\t");

System.out.println();

for(int k=1;k

//insert a random number from 0-100 so that the list is sorted

n=list[k];

int pos=k-1;

while(pos>=0 &&n

list[pos+1] = list[pos];

pos--;

}

list[pos+1]=n;

}

System.out.println("After insertion sort");

for( int x:list)

System.out.print(x+"\t");

System.out.println();

}