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
  • 5956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。 'g8~539{&  
插入排序: }*m:zD@8$  
_^'fp  
package org.rut.util.algorithm.support; R ;^[4<&  
R/M:~h~F!  
import org.rut.util.algorithm.SortUtil; ur-&- G^  
/**  yf!  
* @author treeroot <`sVu  
* @since 2006-2-2 ul+ +h4N  
* @version 1.0 `Y-uNJ'.N  
*/ /_?E0 r  
public class InsertSort implements SortUtil.Sort{ >A|6 kzC  
rp.S4;=Q9  
/* (non-Javadoc) *Wv]DV=\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,8g~,tMr+  
*/ XB-pOtVm  
public void sort(int[] data) { zPU& }7  
int temp; A+3@N99HeH  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); [1'`KJ]  
} x2.G1  
} e =Vu;  
} EVMhc"L  
,b=&iDc  
} S=^yJ6 xJ  
p%CAicn  
冒泡排序: $!Z6?+  
6TxZ^&=  
package org.rut.util.algorithm.support; Z mF}pa,gd  
O,ZvV3  
import org.rut.util.algorithm.SortUtil; %-|Po:6  
2"C'Au  
/** LWc}j`Wd  
* @author treeroot _r5Q%8J  
* @since 2006-2-2 59 O;`y0  
* @version 1.0 )JTh=w4n|z  
*/ d:O>--$_tw  
public class BubbleSort implements SortUtil.Sort{ ^q@.yL  
ZVJbpn<lo)  
/* (non-Javadoc) /] ce?PPC  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _CP e  
*/ "-kb=fY  
public void sort(int[] data) {  Z $Ynar  
int temp; Y4}!9x  
for(int i=0;i for(int j=data.length-1;j>i;j--){ a<FzHCw  
if(data[j] SortUtil.swap(data,j,j-1); T{bM/?g  
} ;Yyg(Ex  
} Rk56H  
} f .rz2)o  
} cu]2`DF  
bV&/)eqv  
} a_m P$4T  
4s~Y qP{K  
选择排序: IP$^)t[  
~" B0P>7  
package org.rut.util.algorithm.support; xA#B1qbw  
4hg]/X"H#  
import org.rut.util.algorithm.SortUtil; (1%u`#5n-N  
/sH3Rk.>  
/** &@c=$+#C  
* @author treeroot p-UACMN& c  
* @since 2006-2-2 Ttb @98  
* @version 1.0 p8Di9\}  
*/ Ec[=~>;n{l  
public class SelectionSort implements SortUtil.Sort { qi}HJkOq  
R{5Qb?&wOp  
/* Miqu  
* (non-Javadoc) -<sn+-uE:  
* 3'Q H\t5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) b{s_cOr/  
*/ /K:M ,q  
public void sort(int[] data) { Wu<  
int temp; 97e fWYj  
for (int i = 0; i < data.length; i++) { B%Dy;zdWd/  
int lowIndex = i; lz EF^6I  
for (int j = data.length - 1; j > i; j--) { $:s1x\ol  
if (data[j] < data[lowIndex]) { tfvX0J  
lowIndex = j; 3/>McZ@OH  
} ?3kfh R  
} K5z*DYT  
SortUtil.swap(data,i,lowIndex); Y<X%'Wd\  
} FJKt5}`8  
} o8BbSZVu  
"2)<'4q5)  
} RtGETiA\b  
'N)&;ADx-G  
Shell排序: L{ ?& .iA  
z9U<Z^4z+  
package org.rut.util.algorithm.support; Vc$x?=  
_+N*4  
import org.rut.util.algorithm.SortUtil; Ku*@4#<L6h  
! ]&a/$U  
/** aJ88U69  
* @author treeroot muo(bR8  
* @since 2006-2-2 bdk"7N  
* @version 1.0 vUR{!`14  
*/ ^q_0(Vf  
public class ShellSort implements SortUtil.Sort{ 5Az=)q4Q  
<33[qt~  
/* (non-Javadoc) ^E8&!s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oU% rP  
*/ &OK(6o2m;  
public void sort(int[] data) { BhLYLlXPY  
for(int i=data.length/2;i>2;i/=2){ = \AI92  
for(int j=0;j insertSort(data,j,i); 1Wtr_A  
} \eH~1@\S  
} )t9<cJ=  
insertSort(data,0,1); 2PE|4zG  
} 'W3>lAPx!  
_)O1v%]"4  
/** 9xyj,;P>  
* @param data +^Eruv+F  
* @param j ?P ,z^  
* @param i ~dC)EG  
*/ )7Gm<r  
private void insertSort(int[] data, int start, int inc) { 3_~V(a  
int temp; Ovv~ymj  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); }|%dN*',  
} [94A?pn[z  
} ;U<;R  
} Q}d6+C  
'}e_8 FS  
} z J93EtlF  
3h aYb`  
快速排序: fAm^-uq[  
!fZ\GOx  
package org.rut.util.algorithm.support; w<<>XIL  
n'9Wl'  
import org.rut.util.algorithm.SortUtil; d^mw&F)S  
/@X!  
/**  U2  
* @author treeroot 5'd$TC  
* @since 2006-2-2 t,M _  
* @version 1.0 *BH*   
*/ X#'DS&{  
public class QuickSort implements SortUtil.Sort{ L/_h5Q:'W  
F$ShhZgi  
/* (non-Javadoc) V$VqYy9 *  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?>cx; "xF  
*/ Hgu$)yhlj  
public void sort(int[] data) { K PSFy<  
quickSort(data,0,data.length-1); >0Y >T6!  
} x :\+{-  
private void quickSort(int[] data,int i,int j){ ^.p({6H  
int pivotIndex=(i+j)/2; ? [l[y$9  
file://swap 6X~.J4  
SortUtil.swap(data,pivotIndex,j); z85%2Apd  
j uG?kL.  
int k=partition(data,i-1,j,data[j]); }pdn-#  
SortUtil.swap(data,k,j); H<#M)8  
if((k-i)>1) quickSort(data,i,k-1); bGOOC?[UX  
if((j-k)>1) quickSort(data,k+1,j); /W1!mih  
<qT[  
} ?1*Ka  
/** 0_q8t!<xJw  
* @param data y^zII5|s  
* @param i U>w#`Sy[  
* @param j ;{EIx*<d  
* @return }(A`aB_  
*/ y G)xsY V  
private int partition(int[] data, int l, int r,int pivot) { Xyy;BO:  
do{ i'OFun+-,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3}(6z"r  
SortUtil.swap(data,l,r); 1)pwR3(^Fz  
} r&oR|-2hRk  
while(l SortUtil.swap(data,l,r); .A<G$ db ?  
return l; /2l&D~d"  
} Z8E-(@`q5Q  
WHeyE3}p  
} !iA 3\Ai"  
CuC1s>  
改进后的快速排序:  a?S5 =  
E-IVv  
package org.rut.util.algorithm.support; :+NZW9_  
nF>41 K  
import org.rut.util.algorithm.SortUtil; kH~ z07:  
w=:o//~6j  
/** O 7RIcU  
* @author treeroot ,% "!8T  
* @since 2006-2-2 {,NGxqhE  
* @version 1.0 JJ_b{ao<  
*/ G%^jgr)  
public class ImprovedQuickSort implements SortUtil.Sort { *o.f<OwOz  
SQ8xfD*  
private static int MAX_STACK_SIZE=4096; \ne1Xu:hM  
private static int THRESHOLD=10; vF@hg)A  
/* (non-Javadoc) Wip@MGtJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) (VD Y]Q)  
*/ SW5V:|/  
public void sort(int[] data) { NIgqdEu1  
int[] stack=new int[MAX_STACK_SIZE]; 2t 6m#  
DmU,}]#:  
int top=-1; >RJjm&M  
int pivot; 7irpD7P>  
int pivotIndex,l,r; Lh%z2 5t  
WoM;)Q  
stack[++top]=0; -]el_:H  
stack[++top]=data.length-1; E|{(O  
%"-bG'Yc  
while(top>0){ <G|i!Pm  
int j=stack[top--]; j5m KJC  
int i=stack[top--]; !q\MXS($#u  
]QKo>7%[  
pivotIndex=(i+j)/2; p3r("\Za,  
pivot=data[pivotIndex]; GsIVx!  
>[}lC7 z,  
SortUtil.swap(data,pivotIndex,j); R !g'zS'  
`#HtVI  
file://partition +t*V7nW  
l=i-1; j9gn7LS  
r=j; i(T[  
do{ mi[t1cN)=  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); OT 0%p)  
SortUtil.swap(data,l,r); )5T82=[h<  
} wcH,!;3z+  
while(l SortUtil.swap(data,l,r); }uZ/^_U.  
SortUtil.swap(data,l,j); @$}Ct  
4>^LEp  
if((l-i)>THRESHOLD){ eH HY.^|  
stack[++top]=i; (#kKL??W  
stack[++top]=l-1; Hjhgu=  
} &~mJ ).*  
if((j-l)>THRESHOLD){ '8J!(+  
stack[++top]=l+1; H9;0$Y(e-  
stack[++top]=j; ;~D$ rT  
} yFoPCA86y  
$%BI8_  
} <W] RyEg`  
file://new InsertSort().sort(data); o|:c{pwq  
insertSort(data); n%|og^\0  
} 'tTUro1~  
/** UQZl:DYa  
* @param data [Ef6@  
*/ QB uX#bDV  
private void insertSort(int[] data) { Emy=q5ryl  
int temp; b?{MXJ|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |L/EH~| O  
} a\m_Q{:  
} n6AA%? 5  
} g(_xo\  
"QD>m7  
} W4;/;[/L  
GCf,Gfmr  
归并排序: vA3wn><  
dx@|M{jz'  
package org.rut.util.algorithm.support; Mj&G5R~_  
s$%t2UaV  
import org.rut.util.algorithm.SortUtil; Hr_5N,  
 `j1oxJm  
/** azz=,^U#  
* @author treeroot |\zzOfaO  
* @since 2006-2-2 *\.8*6*$!  
* @version 1.0 rJZR8bo  
*/ (> W \Nf  
public class MergeSort implements SortUtil.Sort{ l~]D|92  
l-Be5?|{_  
/* (non-Javadoc) ]p8 zT|bv  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) * N]^(+/A  
*/ .k:heN2-x  
public void sort(int[] data) { ">._&8KkE0  
int[] temp=new int[data.length]; li hIPMU  
mergeSort(data,temp,0,data.length-1); @)\4 $#+-  
} |nCVM\+5T  
u,V_j|(e  
private void mergeSort(int[] data,int[] temp,int l,int r){ _tUh*"e&  
int mid=(l+r)/2; V&*|%,q   
if(l==r) return ; iYZn`OAx  
mergeSort(data,temp,l,mid); _9g-D9  
mergeSort(data,temp,mid+1,r); O8 OAXRt/Y  
for(int i=l;i<=r;i++){ (xfh 9=.  
temp=data; .TMLg(2hgv  
} b wM?DY  
int i1=l; :8K}e]!c1  
int i2=mid+1; PYBE?td  
for(int cur=l;cur<=r;cur++){ 2E8G 5?qe)  
if(i1==mid+1) @U3:9~Q  
data[cur]=temp[i2++]; @R-11wP)M  
else if(i2>r) ZNVrja*  
data[cur]=temp[i1++];  qJ sH  
else if(temp[i1] data[cur]=temp[i1++]; -Bl]RpHCe  
else It7R}0Smg  
data[cur]=temp[i2++]; tr5j<O  
} SRtw  
} k".kbwcaF  
(dfC}x(3h  
} TjDtNE  
'hE'h?-7  
改进后的归并排序: IyI0|&r2A  
1fvN[  
package org.rut.util.algorithm.support; PB *v45  
j]FK.G'  
import org.rut.util.algorithm.SortUtil; g<@Q)p*ow  
GE`1j'^-  
/** N]eBmv$|  
* @author treeroot 3&>0'h  
* @since 2006-2-2 Y)@Y$_  
* @version 1.0 EK= y!>  
*/ 06O_!"GD}  
public class ImprovedMergeSort implements SortUtil.Sort { |h }4J  
Nc &J%a  
private static final int THRESHOLD = 10; %3O))Ug5  
J%-4ZB"  
/* m}u)C&2>  
* (non-Javadoc) q}+zN eC  
* %ufh  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NT0n [o^  
*/ N8pV[\f  
public void sort(int[] data) { .X qeO@z  
int[] temp=new int[data.length]; HMC-^4\%[  
mergeSort(data,temp,0,data.length-1); ^B0Qk:%P^N  
} WW.@&#S5  
_P=+\ [|y  
private void mergeSort(int[] data, int[] temp, int l, int r) { jz`3xFy *]  
int i, j, k; 7Q]c=i cg  
int mid = (l + r) / 2; `LNhamp  
if (l == r) iGSA$U P|  
return; Y/6>OD  
if ((mid - l) >= THRESHOLD) `!t-$i  
mergeSort(data, temp, l, mid); :_y!p  
else Q?;Tc.O"/  
insertSort(data, l, mid - l + 1); V*ao@;sD  
if ((r - mid) > THRESHOLD) 76"4Q!  
mergeSort(data, temp, mid + 1, r); r<vy6  
else `3 i<jZMG  
insertSort(data, mid + 1, r - mid); [zBi*%5O  
O^3kPVr  
for (i = l; i <= mid; i++) { ]+46r!r|  
temp = data; (:qc[,m  
} r88De=*  
for (j = 1; j <= r - mid; j++) { `<yQ`Y_X  
temp[r - j + 1] = data[j + mid]; I ^m  
} L-}J=n\  
int a = temp[l]; 5wmd[YL  
int b = temp[r]; #GLW3}  
for (i = l, j = r, k = l; k <= r; k++) { ,% Qh S5e  
if (a < b) { t[J=8rhER  
data[k] = temp[i++]; oz>2P.7  
a = temp; Q&N#q53  
} else { :IU7dpwDl  
data[k] = temp[j--]; #gqh0 2 7  
b = temp[j]; (5 @H  
} ;xe.0j0h  
} BO#tn{(#  
} yw$4Hlj5  
* eC[74Kng  
/** MW6z&+Z  
* @param data +^lB"OcOX@  
* @param l ?WHf%Ie2(  
* @param i #H w(w  
*/ cLl~4jL  
private void insertSort(int[] data, int start, int len) { u*v<dsGQ  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); =V]0G,,\  
} 7dcR@v`c  
} *s*Y uY%y  
} \?>M?6D  
} IC&P-X_aP  
^e_LnJ+  
堆排序: i ? ~-%  
n'v\2(&uYN  
package org.rut.util.algorithm.support; -z~!%4 a  
Ac|\~w[\  
import org.rut.util.algorithm.SortUtil; cd1G.10  
R8k4?_W?T  
/** R__:~ uv,  
* @author treeroot } 1e4u{  
* @since 2006-2-2 UPU$SZAIx  
* @version 1.0 }VZExqm)  
*/ itP`{[  
public class HeapSort implements SortUtil.Sort{ jZzTnmm&?  
1'\QD`M9^  
/* (non-Javadoc) N"G aQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q50F!yHC-  
*/ 2^=.j2  
public void sort(int[] data) { z'"7zLQ  
MaxHeap h=new MaxHeap(); qEr?4h  
h.init(data); 4lB??`UN  
for(int i=0;i h.remove(); /W$i8g  
System.arraycopy(h.queue,1,data,0,data.length); =&}_bd/]  
} /j$=?Rp  
D<;~eZ'  
private static class MaxHeap{ <;S$4tux  
![^pAEgx  
void init(int[] data){ YND}P9 h  
this.queue=new int[data.length+1]; bsF_.S*k@  
for(int i=0;i queue[++size]=data; bu|.Jw"  
fixUp(size); zo( #tQ-'m  
} |MFAP!rycS  
} Sy|GM~  
4MzQH-U>/  
private int size=0; h9)fXW  
%`yfi+e  
private int[] queue; WHY/x /$  
B= {_}f  
public int get() { Q2VF+g,  
return queue[1]; o=3hWbe  
} n?.;*:  
W~/d2_|/  
public void remove() { CpO_p%P  
SortUtil.swap(queue,1,size--); >MHlrSH2  
fixDown(1); mkn1LzE|F  
} j4?Qd0z  
file://fixdown kun/KY  
private void fixDown(int k) { &rBe -52  
int j; FAEF  
while ((j = k << 1) <= size) { ]8\I{LR  
if (j < size %26amp;%26amp; queue[j] j++; s2{SbOBis  
if (queue[k]>queue[j]) file://不用交换 Ev5~= ]  
break; Nnl3r@  
SortUtil.swap(queue,j,k); 25)9R^  
k = j; TC?B_;a  
} P9bM+@5e  
} X ha9x,  
private void fixUp(int k) { I "AjYv4R  
while (k > 1) { ^m w]u"5\  
int j = k >> 1; v.Ba  
if (queue[j]>queue[k]) Q?k *3A  
break; {R!yw`#^B  
SortUtil.swap(queue,j,k); 6P1s*u  
k = j; 2'Dl$DH  
} HrBJi  
} a/j;1xcc<  
-`~qmRpqY  
} Cg): Q8  
Af;Pl|Zh[  
} L/"};VI  
={O ~  
SortUtil: 7y'":1  
R&Y_  
package org.rut.util.algorithm; < '5~p$  
HY)xT$/J  
import org.rut.util.algorithm.support.BubbleSort; <: v+<)K  
import org.rut.util.algorithm.support.HeapSort; 8%7%[WC#  
import org.rut.util.algorithm.support.ImprovedMergeSort; KS$t  
import org.rut.util.algorithm.support.ImprovedQuickSort; _6NUtU  
import org.rut.util.algorithm.support.InsertSort; K3?5bT_{  
import org.rut.util.algorithm.support.MergeSort; ^3$l!>me  
import org.rut.util.algorithm.support.QuickSort; q H}8TC  
import org.rut.util.algorithm.support.SelectionSort; <kK>C8+  
import org.rut.util.algorithm.support.ShellSort; 7AV{ h[J  
2tq2   
/** uQ5h5Cfz  
* @author treeroot -F~DOG%  
* @since 2006-2-2 d. wGO]"  
* @version 1.0 %":3xj'EEI  
*/ IL].!9  
public class SortUtil { Z+El(f x  
public final static int INSERT = 1; h<G4tjtk  
public final static int BUBBLE = 2; {]HiTpn  
public final static int SELECTION = 3; _ Op%H)  
public final static int SHELL = 4; &kg^g%%  
public final static int QUICK = 5; _!03;zrO  
public final static int IMPROVED_QUICK = 6; kv:9Fm\$  
public final static int MERGE = 7; 0^ODJ7  
public final static int IMPROVED_MERGE = 8; fu "cX;  
public final static int HEAP = 9; kamQZzPe  
 )d2Z g  
public static void sort(int[] data) { SyvoN, ;Q  
sort(data, IMPROVED_QUICK); PM\Ju]  
} 0|P=S|%~  
private static String[] name={ FU3K?A B  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" .k,j64 r  
}; c{MoeIG)v@  
V?u#WJy/  
private static Sort[] impl=new Sort[]{ d&#_t@%  
new InsertSort(), v~nKO?{   
new BubbleSort(), E\[BE<y  
new SelectionSort(), 3oCI1>k  
new ShellSort(), *G58t`]r  
new QuickSort(), ${ {4L ?7  
new ImprovedQuickSort(), +U o NJ   
new MergeSort(), YXA@ c  
new ImprovedMergeSort(), *)Rm X$v3  
new HeapSort() ;kgP:n  
}; 2)f_L|o,m  
_?c.m*)A  
public static String toString(int algorithm){ VgH O&vU  
return name[algorithm-1]; 'c35%? ]  
} Z.\q$U7'9  
<0CjEsAB]  
public static void sort(int[] data, int algorithm) { NHd@s#@  
impl[algorithm-1].sort(data); KL&/Yt   
} 2 *NPK}  
Rt8[P6e"q  
public static interface Sort { B.8B1MFm  
public void sort(int[] data); #J[g r_  
} C`.YOkpj  
nrl?<4 _  
public static void swap(int[] data, int i, int j) { ,h*gd^i  
int temp = data; N*Aw-\Bk  
data = data[j]; |qNe_)  
data[j] = temp; .|,LBc!  
} >tM4|w|  
} @;/Pl>$|'G  
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
欢迎提供真实交流,考虑发帖者的感受
认证码:
验证问题:
10+5=?,请输入中文答案:十五