标签:style blog class code c java
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public class InsertSort { public
static void sort( int [] a) { int
N = a.length; int
count = 0 ; for
( int i = 1 ; i < N; i++) // 如果只有一个元素, i < N 就不会成立,for循环就不执行 { for
( int j = i; j > 0 ; j--) { if
(a[j] < a[j- 1 ]) { int
temp = 0 ; temp = a[j]; a[j] = a[j- 1 ]; a[j- 1 ] = temp; count++; } } } for
( int i = 0 ; i < N; i++) { System.out.print(a[i] + " " ); } System.out.println( "count = "
+ count); } public
static void main(String[] args) { int [] a = { 6 , 2 , 5 , 3 , 1 , 4 }; InsertSort.sort(a); } } |
运算过程:
{6, 2, 5, 3, 1, 4} ----------------------------- i = 1; j = 1; {2, 6, 5, 3, 1, 4} ----------------------------- i = 2; j = 2; {2, 5, 6, 3, 1, 4} j = 1; ----------------------------- i = 3; j = 3; {2, 5, 3, 6, 1, 4} j = 2; {2, 3, 5, 6, 1, 4} j = 1; ----------------------------- i = 4; j = 4; {2, 3, 5, 1, 6, 4} j = 3; {2, 3, 1, 5, 6, 4} j = 2; {2, 1, 3, 5, 6, 4} j = 1; ------------------------------ i = 5; j = 5; {1, 2, 3, 5, 4, 6} j = 4; {1, 2, 3, 4, 5, 6} j = 3; j = 2; j = 1;
标签:style blog class code c java
原文地址:http://www.cnblogs.com/owenbeta/p/3730885.html