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
  • 8956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。 <B)lV'!Bd  
插入排序: z;-2xD0&U[  
_.j KcDf  
package org.rut.util.algorithm.support; %!@Dop/<  
qVf~\H@  
import org.rut.util.algorithm.SortUtil; ']V 2V)t  
/** -C\m' T,1  
* @author treeroot R +k\)_F  
* @since 2006-2-2 E 0YXgQa  
* @version 1.0 Tsa&R:SE  
*/ "*UHit;"+{  
public class InsertSort implements SortUtil.Sort{ |XQ!xFB  
M$w^g8F27H  
/* (non-Javadoc) ]LD@I;(_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9%4rO\q  
*/ lGxG$0`;;  
public void sort(int[] data) { SgJQH7N  
int temp;  @521 zi  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); #CM2FN:W  
} ZI1[jM{4^F  
} ='~C$%  
} 3o6N&bQ b  
UlyX$f%2  
} T\OLysc  
K2&pTA~OR  
冒泡排序: &D/_@\ 0  
BH=vI<D  
package org.rut.util.algorithm.support; srUpG&Bcx  
T1Xm^{  
import org.rut.util.algorithm.SortUtil; U|,VH-#  
$AoN,B>  
/** x }-rAr  
* @author treeroot _,5(HETE2  
* @since 2006-2-2 y>|7'M*+  
* @version 1.0 DI+kO(S  
*/ * ,,D%L  
public class BubbleSort implements SortUtil.Sort{ ,rQznE1e  
'H+pwp"M@  
/* (non-Javadoc) UAa2oY&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8eL[ ,uw  
*/ %A?Ym33  
public void sort(int[] data) { an.)2*u  
int temp; ]kR 93  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Yk[yG;W  
if(data[j] SortUtil.swap(data,j,j-1); Rom|Bqo;  
} pS9CtQqvgy  
} )t0t*xu#  
} 9MVW~ V  
} r'-)@|  
(m})V0/`  
} u[y>DPPx  
ACc.&,!IZ  
选择排序: cvi+AZ=  
B$aboL2  
package org.rut.util.algorithm.support; 5{VrzzOK}  
g;Bq#/w  
import org.rut.util.algorithm.SortUtil; 19h8p>Sx0  
:43K)O"  
/** ^<7)w2ns  
* @author treeroot S-g`rTx  
* @since 2006-2-2 :U^a0s%B  
* @version 1.0 5Y JLR;  
*/ | \C{R  
public class SelectionSort implements SortUtil.Sort { mbU[fHyV  
c(i-~_  
/* "3W!p+W  
* (non-Javadoc) ~\(U&2t  
* t :sKvJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {])F%Q_#cD  
*/ P%(pbG-X.  
public void sort(int[] data) { w*OZ1|  
int temp; R@u6mMX{N,  
for (int i = 0; i < data.length; i++) { ;VNwx(1l`  
int lowIndex = i; ?&j[Rj0pH  
for (int j = data.length - 1; j > i; j--) { 52,pCyU  
if (data[j] < data[lowIndex]) { ts aD5B  
lowIndex = j; }2-{4JIq}  
} 8S &`  
} IX,/ZOZ|  
SortUtil.swap(data,i,lowIndex); |U>BXX P  
} |r$Vb$z  
} 1ki##v[ W8  
fYl$$.  
} y/'2WO[  
"n=`{~F  
Shell排序: L Lm{:T7  
!Z`~=n3bk  
package org.rut.util.algorithm.support; OXK?R\ E+  
;Z%ysLA  
import org.rut.util.algorithm.SortUtil; >| rID  
3 8m5&5)1F  
/** GTyS8`5E*  
* @author treeroot V#'sH  
* @since 2006-2-2 (>%Ddj6_>  
* @version 1.0 2kp.Ljt@  
*/ x@;XyQq  
public class ShellSort implements SortUtil.Sort{ cO.U*UTmX  
 I QS|  
/* (non-Javadoc) u`xmF/jhQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) J$%mG*Y(  
*/ }3!83~Qbx  
public void sort(int[] data) { h7)^$Hd  
for(int i=data.length/2;i>2;i/=2){ pLE|#58I  
for(int j=0;j insertSort(data,j,i); A|,\}9)4X[  
} 7<<pP  
} U}x2,`PI  
insertSort(data,0,1); bN`oQ.Z 4  
} Z2_eTC u  
CS)&A4`8  
/** O5CIK}A  
* @param data i/2OE&*O[  
* @param j |"8Az0[!  
* @param i KwndY,QD  
*/ fIu5d6;'  
private void insertSort(int[] data, int start, int inc) { 3k` "%R.H  
int temp; >pW8K[  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); m\(4y Gj  
} `Rub"zM  
} [ dpd-s  
} 0?qXDO&~  
O8(;=exA  
} W$O^IC  
S7N3L."  
快速排序: P%z\^\p"5  
GNS5v-"H  
package org.rut.util.algorithm.support; iA3d[%tBb  
&?IOrHSv!  
import org.rut.util.algorithm.SortUtil; rk*Igqf  
,UopGlA ,  
/** ^n!{ vHz  
* @author treeroot TviC1 {2  
* @since 2006-2-2 iT1"Le/N  
* @version 1.0 sesr`,m.,  
*/ dd>|1'-]  
public class QuickSort implements SortUtil.Sort{ aR6?+`6<  
R/R[r> 1)6  
/* (non-Javadoc) 3Bee6N>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JryDbGc8  
*/ #Z;ziM:  
public void sort(int[] data) { jhjGDF  
quickSort(data,0,data.length-1); bAms-cXm  
} 8+{WH/}y8  
private void quickSort(int[] data,int i,int j){ ;W]NT 4p  
int pivotIndex=(i+j)/2; zYO+;;*@  
file://swap W Y_}D!O  
SortUtil.swap(data,pivotIndex,j); 9a9<I  
>gM|:FG  
int k=partition(data,i-1,j,data[j]); E@^`B9 ;Q7  
SortUtil.swap(data,k,j); Un@B D}@\  
if((k-i)>1) quickSort(data,i,k-1); kU$P?RD  
if((j-k)>1) quickSort(data,k+1,j); 3.U5Each-  
1v!Xx+}  
} y?GRxoCD"e  
/** ${0+LhST  
* @param data v^2K=f[nE  
* @param i gm~Ka%O|F  
* @param j SoeL_#+^W  
* @return ZfM(%rx  
*/ |B<+Y<)f^  
private int partition(int[] data, int l, int r,int pivot) { jG)fM?  
do{ 2LGeRw  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :]iV*zo_  
SortUtil.swap(data,l,r); YdX#`  
} 3ddH@Y|  
while(l SortUtil.swap(data,l,r); Ar7vEa81  
return l; 0^nnR7  
} jv<BGr=4;  
Bi/=cI  
} /*!K4)$-*2  
=Y#)c]`  
改进后的快速排序: -'3~Y 2#  
ag^EH"%zw  
package org.rut.util.algorithm.support; tNg}: a|J  
y3 @R>@$  
import org.rut.util.algorithm.SortUtil; }eb}oK  
<iVn!P  
/** \72(d  
* @author treeroot &l2oyQEF)  
* @since 2006-2-2 $Q*h+)g<  
* @version 1.0 CM?dB$AwX  
*/ vggyQf%  
public class ImprovedQuickSort implements SortUtil.Sort { Fl<|/DCg  
<o,]f E[  
private static int MAX_STACK_SIZE=4096; ;4p_lw@  
private static int THRESHOLD=10; H4p N+  
/* (non-Javadoc) %Ez=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `K37&b;`[  
*/ 8gWifx #N  
public void sort(int[] data) { XoEiW R  
int[] stack=new int[MAX_STACK_SIZE]; SVWtKc<  
H!mNHY_fA  
int top=-1; 2iC7c6hc  
int pivot; KR4X&d6  
int pivotIndex,l,r; 19O /Q,9  
m[7@l  
stack[++top]=0; 89ivyv;]U  
stack[++top]=data.length-1; qE?*:$  
F33&A<(,  
while(top>0){ s)X'PJ0&Bs  
int j=stack[top--]; 6qg_&woJ3  
int i=stack[top--]; uLXMEx<^  
F_0vh;Jo  
pivotIndex=(i+j)/2; QII-9 RxX"  
pivot=data[pivotIndex]; VsEMF i=  
:4RD .l  
SortUtil.swap(data,pivotIndex,j); .`qw8e}y#'  
t;X  !+  
file://partition t Dn{;ED<  
l=i-1; ~5LlIpf36|  
r=j; kU^*hd ]  
do{ Y&M}3H>E  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @vzv9c[  
SortUtil.swap(data,l,r); )fSO|4   
} pJ)PVo\cV  
while(l SortUtil.swap(data,l,r); k$]-fQM  
SortUtil.swap(data,l,j); j6x1JM  
<NRW^#g<x  
if((l-i)>THRESHOLD){ klSzmi4M  
stack[++top]=i;  <sdC#j  
stack[++top]=l-1; W ~(4t:hp  
} T^FeahA7;  
if((j-l)>THRESHOLD){ n?uVq6c  
stack[++top]=l+1; s*% pNE U  
stack[++top]=j; D|m] ]B  
} *^agwQ`  
+M@p)pyu  
} O#[+= ^  
file://new InsertSort().sort(data); 9?M>Y?4  
insertSort(data); iIrH&}2  
} 2Lravb3  
/** J* V@huF  
* @param data 66RqjP '2  
*/ %&EDh2w>  
private void insertSort(int[] data) { MPSoRA: h  
int temp; B,rpc\_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); QN!.~>  
} \~j6}4XS1.  
} }<G"w 5.<  
} z +NxO !y  
P!uwhha/g  
} St9+/Md=jQ  
[+7 Nu  
归并排序: 8Ter]0M&  
f~bZTf  
package org.rut.util.algorithm.support; 2Mqac:L  
sT&O%(  
import org.rut.util.algorithm.SortUtil; uLr 9*nxd  
[}p/pj=  
/** K8>-%ns  
* @author treeroot G3 h&nH,>  
* @since 2006-2-2 6:PQkr  
* @version 1.0 {~cG'S Y%  
*/ J2tD).G  
public class MergeSort implements SortUtil.Sort{ 4i<V^go"  
2y_R05O0  
/* (non-Javadoc) o XKH,r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }Z^r<-N  
*/ 8vP:yh@  
public void sort(int[] data) { s#f6qj  
int[] temp=new int[data.length]; 8[2.HM$Y  
mergeSort(data,temp,0,data.length-1); [X9s\H  
} #HgXTC  
0iy-FV;J  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,B^NH7A:  
int mid=(l+r)/2; 49/j9#hr  
if(l==r) return ; &DUt`Dr w  
mergeSort(data,temp,l,mid); Q#wl1P  
mergeSort(data,temp,mid+1,r); 4tZnYGvqe  
for(int i=l;i<=r;i++){ PP+-D~r`}  
temp=data; N.j?:  
} EUVB>%P  
int i1=l; Kzv*`  
int i2=mid+1; sE,Q:@H5  
for(int cur=l;cur<=r;cur++){ 9lT6fW`v1Q  
if(i1==mid+1) lDBn3U&z>  
data[cur]=temp[i2++]; 9!aQ@ J^  
else if(i2>r) rSGt`#E-s.  
data[cur]=temp[i1++]; Dg:2*m_!j{  
else if(temp[i1] data[cur]=temp[i1++]; zAr@vBfC%  
else d&!ZCq#_e  
data[cur]=temp[i2++]; z3 zN^ZT  
} 3n\eCdV-b<  
} U}r^M( s!  
6f$h1$$)^  
} k!%[W,*  
&n5Lc`  
改进后的归并排序: d;Uzl 1;  
qQL]3qP  
package org.rut.util.algorithm.support; ZO`{t1   
!!WSGZUR  
import org.rut.util.algorithm.SortUtil; )v4?+$g  
@R!f(\  
/** Hl@)j   
* @author treeroot #D{jNSB  
* @since 2006-2-2 M-  f)\`I  
* @version 1.0 8Z^9r/%*Z  
*/ |'C {nTX  
public class ImprovedMergeSort implements SortUtil.Sort { p=tj>{  
]#UyYgPk  
private static final int THRESHOLD = 10; 6$d3Ap@Gl  
dHE\+{K%-  
/* > @Ux8#  
* (non-Javadoc) k8]uy2R6}  
* G!y~Y]e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~"oxytJ  
*/ @0XqUcV  
public void sort(int[] data) { {5ujKQOcR  
int[] temp=new int[data.length]; =bVaB<!  
mergeSort(data,temp,0,data.length-1); 5CSihw/5  
} YW|KkHi*  
(sngq{*%%z  
private void mergeSort(int[] data, int[] temp, int l, int r) { (c{<JYEC  
int i, j, k; Rf &~7h'+  
int mid = (l + r) / 2; [Rqv49n*V  
if (l == r) r%*UU4xvB  
return; `M "O #  
if ((mid - l) >= THRESHOLD) fvW7a8k3  
mergeSort(data, temp, l, mid); s'&/8RR  
else ^,Paih 2  
insertSort(data, l, mid - l + 1); JN9 W:X.  
if ((r - mid) > THRESHOLD) YKjm_)8]w  
mergeSort(data, temp, mid + 1, r); i.0}d5Y  
else ur'a{BI2R  
insertSort(data, mid + 1, r - mid); s^ t1T&  
XQ+KI:g2  
for (i = l; i <= mid; i++) { ^|z  
temp = data; MjO.s+I  
} 1 LgzqRq  
for (j = 1; j <= r - mid; j++) { jIZpv|t)  
temp[r - j + 1] = data[j + mid]; g3p*OYf  
} RhJ{#G~:%  
int a = temp[l]; DPrFBy  
int b = temp[r]; RHV& m()Q  
for (i = l, j = r, k = l; k <= r; k++) { -ejH%CT  
if (a < b) { xMk0Xf'_  
data[k] = temp[i++]; +Om(&\c(6  
a = temp; YTiXU Oj  
} else { y4aW8J#  
data[k] = temp[j--]; .t/XW++  
b = temp[j]; D ^ mfWJS  
} *vx!twu1o  
} vOb=>  
} Q:.q*I!D<4  
S7tc  
/** &ukYTDM  
* @param data oW:p6d  
* @param l .%{3#\  
* @param i e8HGST`  
*/ b%w?YR   
private void insertSort(int[] data, int start, int len) { MGH(= w1  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); xWY%-CWY.  
} G(LGa2;Zg  
} `0@onDQVc=  
} s~ZLnEb  
} (#Vkk]-p  
3"ALohlL  
堆排序: nLn3kMl4  
!J3dlUFRO  
package org.rut.util.algorithm.support; +{Qk9Z  
3h:"-{MW.  
import org.rut.util.algorithm.SortUtil; K{eq'F5M  
o6JCy\Bx  
/** Lh0qB)>  
* @author treeroot XBd/,:q  
* @since 2006-2-2 B}Q.Is5  
* @version 1.0 D4e*Wwk  
*/ -;/;dz;  
public class HeapSort implements SortUtil.Sort{ _K(w &Kr  
4Wz@^7|V5  
/* (non-Javadoc) *]<M%q!<6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `)sC".b7  
*/ -;5WMX 6  
public void sort(int[] data) { 5)g6yV'  
MaxHeap h=new MaxHeap(); E$B7E@(U  
h.init(data); [,A*nU$  
for(int i=0;i h.remove(); Gqe?CM  
System.arraycopy(h.queue,1,data,0,data.length); PuKT0*_ 7  
} vM_UF{a$=  
dso6ZRx  
private static class MaxHeap{ -6wjc rTD  
84xA/BRW  
void init(int[] data){ <m;idfn  
this.queue=new int[data.length+1]; \k?Fu=@  
for(int i=0;i queue[++size]=data; C%hMh/Li;  
fixUp(size); }.j<kmd  
} 6Fp}U  
} +;Yd<~!c Z  
j<H5i}  
private int size=0; 6[r-8_  
DG2CpR)S  
private int[] queue; N3J T[7  
\UBTNY,  
public int get() { Nqf6CPXE  
return queue[1]; in>Os@e#  
} * z,] mi%  
+M@,CbqD  
public void remove() { PtfxF]%H  
SortUtil.swap(queue,1,size--); F+%6?2 J  
fixDown(1); j c%  
} "])yV    
file://fixdown QqpXUyHp[  
private void fixDown(int k) { I_QWdxn  
int j; oqLM-=0<}  
while ((j = k << 1) <= size) { <4l;I*:2&  
if (j < size %26amp;%26amp; queue[j] j++; 4z {jWNM)N  
if (queue[k]>queue[j]) file://不用交换 Z/ Vb_  
break; fdU`+[_  
SortUtil.swap(queue,j,k); XsOz {?G  
k = j; <a=,{O  
} ]@Gw$  
} # Uc0 W  
private void fixUp(int k) { Sbf+;:D  
while (k > 1) { &OK[n1M  
int j = k >> 1; ; M)l7f  
if (queue[j]>queue[k]) 9E@}@ZV(  
break; uA`EJ )d  
SortUtil.swap(queue,j,k); P4h^_*d  
k = j; #2dd`F8  
} `E@TPdu  
} &CtWWKS"  
M1>2Q[h7  
} Mg7nv\6  
]]R!MnU:$  
} *hm;C+<~  
#b^x!lR  
SortUtil: >q+q];=(  
[/P}1 c[)U  
package org.rut.util.algorithm; \A~r~  
E%+aqA)f  
import org.rut.util.algorithm.support.BubbleSort; '[T#d!T  
import org.rut.util.algorithm.support.HeapSort; F9N/_H*+  
import org.rut.util.algorithm.support.ImprovedMergeSort; /o/0 9K  
import org.rut.util.algorithm.support.ImprovedQuickSort; ])v,zp"u  
import org.rut.util.algorithm.support.InsertSort; /,tQdD&  
import org.rut.util.algorithm.support.MergeSort; ,JL Y oE+  
import org.rut.util.algorithm.support.QuickSort; E/<5JhI9~  
import org.rut.util.algorithm.support.SelectionSort; X+R?>xq{=h  
import org.rut.util.algorithm.support.ShellSort; ~|FKl%  
&,4 3&pFU  
/** t;^NgkP{$  
* @author treeroot H#Aar  
* @since 2006-2-2 Y{Yp N  
* @version 1.0 v/1&V+"^kd  
*/ &efwfnG<  
public class SortUtil { %T_4n^beFQ  
public final static int INSERT = 1; 31FQ=(K  
public final static int BUBBLE = 2; o3s ME2  
public final static int SELECTION = 3; ZRD@8'1p  
public final static int SHELL = 4; qGH s2Og  
public final static int QUICK = 5; f^EDiG>b`  
public final static int IMPROVED_QUICK = 6; ^")SU(`  
public final static int MERGE = 7; kS\A_"bc  
public final static int IMPROVED_MERGE = 8; p!XB\%sv'"  
public final static int HEAP = 9; &*w)/W  
t V]BcDp  
public static void sort(int[] data) { QcXqMx  
sort(data, IMPROVED_QUICK); KX|7mr90K  
} SL j2/B0  
private static String[] name={ f{[] m(X;  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" O<H5W|cM  
}; G#|`Bjv"aP  
|q( .j4[i  
private static Sort[] impl=new Sort[]{ P ~sX S  
new InsertSort(), z. 6-D  
new BubbleSort(), vz~QR i*  
new SelectionSort(), H7I&Ky  
new ShellSort(), m$w'`[H  
new QuickSort(), L{2KK]IF  
new ImprovedQuickSort(), ~boTh  
new MergeSort(), 3BSJ|o<"=  
new ImprovedMergeSort(), `Dn"<-9:  
new HeapSort() 9"jhS0M  
}; [1 ?  
8}Qmhm`_j=  
public static String toString(int algorithm){ a$~pAy5C  
return name[algorithm-1]; 7e`ylnP!  
} \dq}nOsX*  
{dbPMx  
public static void sort(int[] data, int algorithm) { ^xpiNP!?a  
impl[algorithm-1].sort(data); ;1wRo`RD  
} S(c&XJR  
8ph*S&H  
public static interface Sort { )PU_'n=>  
public void sort(int[] data); oa K&!$S]  
} ]W7e2:Hra  
a%fMf[Fu  
public static void swap(int[] data, int i, int j) { 5d4/}o}%"  
int temp = data; @_+B'<2  
data = data[j]; <6djdr1:b  
data[j] = temp; ?FRuuAS  
}  ^O9_dP:  
} kt0ma/QpP  
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