社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 8205阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
用Java语言实现的各种排序,包括插入排序、冒泡排序、选择排序、Shell排序、快速排序、归并排序、堆排序、SortUtil等。 ~_6rD`2cJ  
插入排序: I*t}gvUt9  
'7%9Sqx  
package org.rut.util.algorithm.support; v0p EN\  
}0*7bb  
import org.rut.util.algorithm.SortUtil; o W [-?  
/** 3 g!h4?^  
* @author treeroot L>*|T[~  
* @since 2006-2-2 3KZ h?~B  
* @version 1.0 }?$Mh)  
*/ <]J5AdJ  
public class InsertSort implements SortUtil.Sort{ w}0PtzOe  
~Y$1OA8  
/* (non-Javadoc) 5 [*jfOz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {643Dz<e  
*/ "^7Uk#! 7  
public void sort(int[] data) { m[rJFSpef  
int temp; L T!X|O.  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); LPClE5  
} ('Pd GV4V  
} bEJZh%j!  
} }s9J+m  
7eyh9E!_I  
} GQQ6 t  
uW|y8 BP $  
冒泡排序: MiI7s ;  
rA7S1)Kq  
package org.rut.util.algorithm.support; UbXz`i  
xC]/i(+bA  
import org.rut.util.algorithm.SortUtil; aeIR}'H|  
x3 <Lx^;  
/** RdjUw#\33b  
* @author treeroot ) eV]M~K:  
* @since 2006-2-2 jA'+>`@  
* @version 1.0 sP#5l @  
*/ *HUqW}_r  
public class BubbleSort implements SortUtil.Sort{ B:SRHd{*Wu  
*&km5@*  
/* (non-Javadoc) Sr0mA M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Smo'&x  
*/ tVwN92*J  
public void sort(int[] data) { K,Vl.-4?  
int temp; p_D)=Ef|&  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 0&|-wduR=  
if(data[j] SortUtil.swap(data,j,j-1); sT ONkd  
} hi%>&i*  
} {WChD&v  
} ~V5jjx*  
} ;F- kE4w  
s5 BV8 M  
} ~PHG5?X  
}0o0"J-$  
选择排序: %$Uw]a  
GOjri  
package org.rut.util.algorithm.support; 3zkq'lZ  
U-d&q>_@A  
import org.rut.util.algorithm.SortUtil; aE}u5L$#  
{Ffr l(*  
/** bk 2vce&  
* @author treeroot \_oHuw  
* @since 2006-2-2 YR>xh2< 9  
* @version 1.0 fQ@["b   
*/ o5d)v)Rx=  
public class SelectionSort implements SortUtil.Sort { pE#0949  
QGa"HG5NF  
/* -3C~}~$>`  
* (non-Javadoc) . Hw^Nx  
* H Zc;.jJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) iD9GAe}x  
*/ kE1u-EA  
public void sort(int[] data) { R~o?X ^^O  
int temp; qohUxtnTK>  
for (int i = 0; i < data.length; i++) { ay2.C BF  
int lowIndex = i; pAYuOk9n  
for (int j = data.length - 1; j > i; j--) { {chl+au*l  
if (data[j] < data[lowIndex]) { g~]FI  
lowIndex = j; W/+0gh7`,(  
} }5|uA/B  
} .nnAI@7E  
SortUtil.swap(data,i,lowIndex); _nF_RpS  
} JL1Whf  
} S; >_9  
IcN|e4t^J+  
} N 6eY-`4y  
2gi`^%#k]  
Shell排序: }6\p7n  
3Dy.mtP  
package org.rut.util.algorithm.support; gs'( px  
*l}q,9iQ-  
import org.rut.util.algorithm.SortUtil; cK""Xz&m  
ZCa?uzeo]  
/** BX?Si1c  
* @author treeroot 8AK#bna~-  
* @since 2006-2-2 gC?k6)p$N  
* @version 1.0 @uHNz-c  
*/ 16AYB17  
public class ShellSort implements SortUtil.Sort{ K=;p^dE  
KQh'5o&  
/* (non-Javadoc) )7f:hg  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wh7$')@  
*/ JA&w"2X*E  
public void sort(int[] data) { %*,'&S  
for(int i=data.length/2;i>2;i/=2){ 0 I,-1o|s  
for(int j=0;j insertSort(data,j,i); %NKf@If)  
} d)LifsD)  
} Oo,<zS=ICk  
insertSort(data,0,1); Pp?J5HW  
} ,JR7N_"I  
B<W{kEY  
/** Gg_i:4F  
* @param data TB9ukLG^<<  
* @param j NVQ IRQ.  
* @param i r__uPyIMG/  
*/ ?>e-6*.  
private void insertSort(int[] data, int start, int inc) { 75a3H`  
int temp; h_J 'dJS  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ,oR}0(^"\<  
} KV Mm<]Z  
} EBJaFz'  
} r>5,U:6Q/  
*9G;n!t  
} SJL?(S*  
C{4[7  
快速排序: WVKzh  
Pr" 2d\  
package org.rut.util.algorithm.support; B?k75G  
dx|j,1e  
import org.rut.util.algorithm.SortUtil; kZeb^Q+,  
v~j21`  
/** A^G%8 )\  
* @author treeroot z.FO6y6L  
* @since 2006-2-2 Vg0Rc t  
* @version 1.0 M Su_*&j9T  
*/ R{/nlS5  
public class QuickSort implements SortUtil.Sort{ vU::dr  
J 5~bs*a8  
/* (non-Javadoc) XvWUJ6M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,?728pfw  
*/ iCx}v[;Ol  
public void sort(int[] data) { AFyf7^^k  
quickSort(data,0,data.length-1); VCtj8hKDr  
} Y2}\~I0  
private void quickSort(int[] data,int i,int j){ )jvYJ9s  
int pivotIndex=(i+j)/2; W EZ)7H  
file://swap M1^pf<!s  
SortUtil.swap(data,pivotIndex,j); yy@g=<okt\  
I;9>$?t[  
int k=partition(data,i-1,j,data[j]); cZi/bIh  
SortUtil.swap(data,k,j); qn:3s  
if((k-i)>1) quickSort(data,i,k-1); +eQg+@u  
if((j-k)>1) quickSort(data,k+1,j); SD |5v*  
*1|&uE&_R  
} ~'n3],o?  
/** f/aSqhAW  
* @param data a(QYc?u  
* @param i ?!KqDI  
* @param j e~oI0%xl^  
* @return wP29 xV"5  
*/ j8P=8w{  
private int partition(int[] data, int l, int r,int pivot) { R!5j1hMN`  
do{ 6cDe_v|,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); O1V s!  
SortUtil.swap(data,l,r); !{jDZ?z{h  
} qq G24**9v  
while(l SortUtil.swap(data,l,r); 7vZznN8e  
return l; r$d,ChzQn?  
} zyTeF~_  
4@- 'p  
} 0@k)C z[0;  
_46 y  
改进后的快速排序: *>I4X=  
v,^2'C$o  
package org.rut.util.algorithm.support; g m'8,ZL  
rZEL7{  
import org.rut.util.algorithm.SortUtil; Dn1aaN6  
f5'Cq)Vw_  
/** _NA[g:DZ&O  
* @author treeroot ye4 T2=  
* @since 2006-2-2 RG4T9eZq  
* @version 1.0 VG'M=O{)3  
*/ EVX*YGxx6  
public class ImprovedQuickSort implements SortUtil.Sort { 9mZ[SQf  
yz.a Z  
private static int MAX_STACK_SIZE=4096; 8R0Q-,'  
private static int THRESHOLD=10; Z jLuqo  
/* (non-Javadoc) 0ZcvpR?G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [z=KHk  
*/ A%(t'z  
public void sort(int[] data) { &?59{B. mD  
int[] stack=new int[MAX_STACK_SIZE]; :(ni/,~Q  
z$C}V/Ey  
int top=-1; 9\y\{DHd  
int pivot; |1!RvW:[!  
int pivotIndex,l,r; F|nJ3:v  
<2{g[le  
stack[++top]=0; }&!fT\4  
stack[++top]=data.length-1; -k(bM:  
GI']&{  
while(top>0){ v"-@'qN'  
int j=stack[top--]; d|I?%LX0p  
int i=stack[top--]; B*B}eXUph  
!X5n'1&  
pivotIndex=(i+j)/2; @~1}n/  
pivot=data[pivotIndex]; Qx<86aKkF  
=zBc@VTp  
SortUtil.swap(data,pivotIndex,j); !Z(3dtUy  
GE?M. '!{{  
file://partition LlbRr.wL  
l=i-1; fRlO.!0(  
r=j; $1KvL8  
do{ |&wwH&<[z  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); I.'(n8*  
SortUtil.swap(data,l,r); ~IQ3B $4H&  
} ~!//|q^ J]  
while(l SortUtil.swap(data,l,r); E)ne z  
SortUtil.swap(data,l,j); Cg#@JuwHa  
Ga,+  
if((l-i)>THRESHOLD){ ,;%F\<b  
stack[++top]=i; D0 5JQ*  
stack[++top]=l-1; mqrV:3}  
} ip)gI&kN`z  
if((j-l)>THRESHOLD){ C] dK/~Z#r  
stack[++top]=l+1; lE|Hp  
stack[++top]=j; qE:/~Q0  
} dAba'|Y  
o%j[]P@4G  
} `bAOhaB,/  
file://new InsertSort().sort(data); `PH]_]:%  
insertSort(data); 4arqlz lo  
} u*w'.5l  
/** lX)ZQY:=:  
* @param data :n0czO6 E  
*/ .G/>X%X  
private void insertSort(int[] data) { e<Bw duy  
int temp; ,Y+J.8.H   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <h"07.y  
} %Eq4>o?D  
} V(#z{!  
} P70]Ju  
.S{>?2  
} oj$^87KX  
A(2!.Y 2?*  
归并排序: :*g3PhNE  
xPp\OuwK  
package org.rut.util.algorithm.support; 9$Dsm@tX  
Z23*`yR  
import org.rut.util.algorithm.SortUtil; VC T~"T2R  
n,l{1 q  
/** g#}a?kTM@  
* @author treeroot T*3>LY+bb  
* @since 2006-2-2 #Y>os3]  
* @version 1.0 I7C*P~32{n  
*/ RX\l4H5;  
public class MergeSort implements SortUtil.Sort{ 8n'"RaLQ8  
d&G#3}kOb%  
/* (non-Javadoc) \g;o9}@3~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2N /4.  
*/ 5,~Ju>y*  
public void sort(int[] data) { {];8jdg/?  
int[] temp=new int[data.length]; r5wy]z^  
mergeSort(data,temp,0,data.length-1); vQ_D%f4;  
} Y(U+s\X  
;;{!wA+"D  
private void mergeSort(int[] data,int[] temp,int l,int r){ -ufO,tJRLL  
int mid=(l+r)/2; tqYwP Sr  
if(l==r) return ; :Sc"fG,g)  
mergeSort(data,temp,l,mid); ZIr&_x#e  
mergeSort(data,temp,mid+1,r); iVdY\+N!<  
for(int i=l;i<=r;i++){ "54t7  
temp=data; |A/)b78'u  
} >0c4C< _  
int i1=l; @b]?Gg  
int i2=mid+1; 9vL n#_  
for(int cur=l;cur<=r;cur++){ z]d2 rzV(_  
if(i1==mid+1) Nk ~"f5q7  
data[cur]=temp[i2++]; +3wVcL  
else if(i2>r) 6jaol'{SuH  
data[cur]=temp[i1++]; Uja`{uc  
else if(temp[i1] data[cur]=temp[i1++]; lKT<aYX  
else x sN)a!  
data[cur]=temp[i2++]; 9*b(\Z)N  
} p*ic@n*G  
} rAwuWM@BIg  
%V;B{?>9zB  
} A@81wv  
;&$Nn'~a  
改进后的归并排序: $kD ;*v=  
S#[w).7  
package org.rut.util.algorithm.support; ^6kE tTO*  
=F 9!)r  
import org.rut.util.algorithm.SortUtil; }:zTz% _K  
a?K3/0G  
/** ZOIx+%/Vd#  
* @author treeroot  O86[`,  
* @since 2006-2-2 %xuJQuCqf  
* @version 1.0 i"Z  
*/ z7$,m#tw  
public class ImprovedMergeSort implements SortUtil.Sort { c7R<5f  
r&0IhE  
private static final int THRESHOLD = 10; W[4 V#&Z  
 |Ym3.hz  
/* tA{B~>  
* (non-Javadoc) 8}_M1w6v  
* ymo].  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )Bo]+\2  
*/ :41Ch^\E  
public void sort(int[] data) { +`]AutNv  
int[] temp=new int[data.length]; #*|Gp_l+%  
mergeSort(data,temp,0,data.length-1); +5xVgIk#  
} "'@>cJ=  
8nKb mjM  
private void mergeSort(int[] data, int[] temp, int l, int r) { >"?jW@|g  
int i, j, k; >\s8S}p  
int mid = (l + r) / 2; U9/6F8D1Y1  
if (l == r) p?idl`?^3  
return; ih\=mB  
if ((mid - l) >= THRESHOLD) ra]lC7<H  
mergeSort(data, temp, l, mid); 15dbM/Gj  
else 79MF;>=tV  
insertSort(data, l, mid - l + 1); Gw@]w;ed  
if ((r - mid) > THRESHOLD) - :~"c@D  
mergeSort(data, temp, mid + 1, r); MIx,#]C&  
else ]mZN18#  
insertSort(data, mid + 1, r - mid); \&#IK9x{  
:rzq[J^  
for (i = l; i <= mid; i++) { hg Pzx@  
temp = data; glI4Jb_[  
} s1kG:h2|$  
for (j = 1; j <= r - mid; j++) { C;jV)hr6P  
temp[r - j + 1] = data[j + mid]; S( Vssi|y  
} Q XLHQ_V  
int a = temp[l]; zNRR('B?  
int b = temp[r]; HpGI\s  
for (i = l, j = r, k = l; k <= r; k++) { Zv|TvlyT"  
if (a < b) { Uw5AHq).  
data[k] = temp[i++]; =6H  
a = temp; EgB$y"fs  
} else { <l!{j?Kx  
data[k] = temp[j--]; FhJtiw@  
b = temp[j]; bg/a5$t  
} |SSe n#PYp  
} !E.CpfaC  
} t;/s^-}  
b-Xc6f  
/** J *nWCL  
* @param data 1ww#]p`1  
* @param l I;GbS`  
* @param i E=$li  
*/ Mo4k6@ht_  
private void insertSort(int[] data, int start, int len) { D@?Tq,= [  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ApSzkPv*  
} zkb[u"  
} mO8E-D*3  
} 3!qp+i)?  
} `&w{-om\  
U@:h';.  
堆排序: Q4e+vBECkq  
~9ynlVb7)r  
package org.rut.util.algorithm.support; \6L,jSoBl  
X')t6DQ(I  
import org.rut.util.algorithm.SortUtil; }BN!Xa  
0 P2lq  
/** P+<4w  
* @author treeroot pSKw Xx  
* @since 2006-2-2 g|=1U  
* @version 1.0 0i4XS*vPv  
*/ .g?Ppma  
public class HeapSort implements SortUtil.Sort{ ~v|NC([(  
-I'Jm=q3]  
/* (non-Javadoc) )l6(ss!J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) { YMO8  
*/ ,vs#(d6G  
public void sort(int[] data) { hq*"S -N  
MaxHeap h=new MaxHeap(); ,*m{Q  
h.init(data); PUbfQg  
for(int i=0;i h.remove(); PfjD!=yS=h  
System.arraycopy(h.queue,1,data,0,data.length); Y{7)$'At  
} mPJ@hr%3  
s0\}Q=s[  
private static class MaxHeap{ =Ohro '   
T o$D [-  
void init(int[] data){ vf0 fa46  
this.queue=new int[data.length+1]; c@|f'V4  
for(int i=0;i queue[++size]=data; )zAATBb4.  
fixUp(size); &hu3A)%  
} ,R[<+!RS  
} 6(8zt"E  
ZO8r8 [  
private int size=0; 'BX U '  
D $&6 8  
private int[] queue; .g>0FP  
XE($t2x,M  
public int get() { W4&Itj  
return queue[1]; I' 'X\/|  
} Vi<6i0  
MHQM'  
public void remove() { ZfVw33z  
SortUtil.swap(queue,1,size--); OfPv'rW{x  
fixDown(1); ;U[W $w[  
} 7-("pp YX=  
file://fixdown @d_9NOmNT  
private void fixDown(int k) { QP7N#mh  
int j; G]RFGwGt  
while ((j = k << 1) <= size) { -7u_\XFk  
if (j < size %26amp;%26amp; queue[j] j++; -Ic<.ix  
if (queue[k]>queue[j]) file://不用交换 -GZ:}<W 6+  
break; 4Ul*`/d  
SortUtil.swap(queue,j,k); nj=nSD  
k = j; k2:mIp\  
} OLE@35"v]  
} ;T3}#Q*qC  
private void fixUp(int k) { aE[:9{<|  
while (k > 1) { kJ"}JRA<  
int j = k >> 1; 4vyJ<b  
if (queue[j]>queue[k]) %TYe]^/'y  
break; 1 EwCF  
SortUtil.swap(queue,j,k); jhB+ ]  
k = j; |\T!,~  
} v(`5exWV  
} of/' 9Tj  
>uR;^B5m  
} eCwR }m?_  
51'{Jx8  
} 9E2OCLWrE  
/NUu^ N  
SortUtil: %9b TfX"  
!~`aEF3  
package org.rut.util.algorithm; GzjC;+W  
!laOiH  
import org.rut.util.algorithm.support.BubbleSort; T)mh  
import org.rut.util.algorithm.support.HeapSort; |vY|jaV}  
import org.rut.util.algorithm.support.ImprovedMergeSort; :u|F>e  
import org.rut.util.algorithm.support.ImprovedQuickSort; xV.UM8  
import org.rut.util.algorithm.support.InsertSort; ?7dV:]%~2  
import org.rut.util.algorithm.support.MergeSort; xcX^L84\  
import org.rut.util.algorithm.support.QuickSort; 4%*`' o$_  
import org.rut.util.algorithm.support.SelectionSort; ofuQ`g1hb  
import org.rut.util.algorithm.support.ShellSort; UQO?hZ!y/.  
+?^lnoX  
/** 6. 6x$y3v  
* @author treeroot yX1OJg[s,  
* @since 2006-2-2 <4Ik]Uz^  
* @version 1.0 O#`y;%  
*/ jBU!xCO  
public class SortUtil { e_dsBmTh  
public final static int INSERT = 1; Ns6C xE9  
public final static int BUBBLE = 2; \9k{h08s  
public final static int SELECTION = 3; Z&5cJk W  
public final static int SHELL = 4; -)[~%n#X+t  
public final static int QUICK = 5; 9&Ny;oy#6  
public final static int IMPROVED_QUICK = 6; AME<V-5  
public final static int MERGE = 7; T;#:Y  
public final static int IMPROVED_MERGE = 8; FB n . 4  
public final static int HEAP = 9; Am=O-; b'8  
I 8 Ls_$[  
public static void sort(int[] data) { LsaRw-4.c  
sort(data, IMPROVED_QUICK); }0 =gP?.kE  
} gsVm)mkd  
private static String[] name={ 5](,N^u{):  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Ae'N1V  
}; =|qYaXjT$  
$O,IXA  
private static Sort[] impl=new Sort[]{ 7%yP5c B  
new InsertSort(), s=1w6ZLD  
new BubbleSort(), w%eEj.MI|i  
new SelectionSort(), (5>IF,}!L  
new ShellSort(), 2YpJ4.  
new QuickSort(), e89IT*  
new ImprovedQuickSort(), 6&L8 {P  
new MergeSort(),  G`NGt_C  
new ImprovedMergeSort(), #.|MV}6rQ  
new HeapSort() 7-c3^5gn{  
}; X-_0wR  
yTh60U  
public static String toString(int algorithm){ +?uZ~VSl  
return name[algorithm-1]; 5mg] su&#  
} O>>%lr|  
2x:aMWh  
public static void sort(int[] data, int algorithm) { 9On(b|mT  
impl[algorithm-1].sort(data); ICUI0/J  
} ;w^{PZBg  
H#B97IGT  
public static interface Sort { P |;=dX#-  
public void sort(int[] data); (z^9 87G  
} J(kC  
ZCDcf   
public static void swap(int[] data, int i, int j) { e`;U9Z  
int temp = data; &I?d(Z=:\  
data = data[j]; kRB2J3Nt.  
data[j] = temp; E7j9A`  
} !\|L(Paf  
} ;\gHFG}  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录注册
如果您在写长篇帖子又不马上发表,建议存为草稿
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八