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[JAVA]用Java实现的各种排序

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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。 O~@fXMthh  
插入排序: $-vo}k%M  
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package org.rut.util.algorithm.support; ,EEPh>cXc  
$%2H6Eg0  
import org.rut.util.algorithm.SortUtil; /_\W+^fE  
/** 4MW ]EQ-  
* @author treeroot j@1)K3Hga  
* @since 2006-2-2 fgF;&(b  
* @version 1.0 Ec]|p6a3  
*/ x<B'.3y  
public class InsertSort implements SortUtil.Sort{ *'ZN:5%H  
x5Zrz<Y$w  
/* (non-Javadoc) hu5!ev2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A^Cj1:,  
*/ nr\q7  
public void sort(int[] data) { O}Le]2'  
int temp; Q M 1F?F  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); @"|i"Hk^  
} p-$Cs _{Z  
} \ijMw  
} u oVNK  
Qv#]81i(1  
} eN-au/kN  
E9 Y\X  
冒泡排序: 9=+-QdX+0]  
S>_27r{  
package org.rut.util.algorithm.support; ;-@=  
}zMf7<C  
import org.rut.util.algorithm.SortUtil; B|o%_:]+E  
I mym+  
/** R+=a`0_S  
* @author treeroot ?IYY'fS"  
* @since 2006-2-2 $L}aQlA1JM  
* @version 1.0 |3eGz%Sd  
*/ OXhAha`R  
public class BubbleSort implements SortUtil.Sort{ |)U|:F/{@  
;+Y i.Q/\  
/* (non-Javadoc) MagMZR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G?hK9@ |v  
*/ g+[kde;(^  
public void sort(int[] data) { kv?|'DN  
int temp; +=3CL2{An  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 9 $l>\.6  
if(data[j] SortUtil.swap(data,j,j-1); ``QHG&$ /  
} n2ndjE$  
} 0SV\{]2  
} [Ot,q/hBJ  
} 3]LN;s]ac  
B)=~8wsI:Z  
} ($!KzxF3  
%mI~ =^za  
选择排序: ~+n,1]W_  
BWq/TG=>  
package org.rut.util.algorithm.support; z&+ zl6  
d;G~hVu  
import org.rut.util.algorithm.SortUtil; H;KDZO9W  
3h=8"lRc  
/** "pvZ,l>8f  
* @author treeroot z,Lzgh  
* @since 2006-2-2 WeT* C  
* @version 1.0  46,j9x  
*/ f_6`tq m%  
public class SelectionSort implements SortUtil.Sort { Nhf~PO({&  
dcq#TBo8  
/* Q~,YbZ-7  
* (non-Javadoc) w2"]Pl  
* --k:a$Nt  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `T WN^0!]  
*/ Dy9\O77>  
public void sort(int[] data) { <8o(CA\  
int temp; $\\lx_)  
for (int i = 0; i < data.length; i++) { j, u#K)7{T  
int lowIndex = i; )pgrl  
for (int j = data.length - 1; j > i; j--) { 45+{nN[  
if (data[j] < data[lowIndex]) { @h?crJ6$  
lowIndex = j; zCe/Kukvy  
} Ok H\^  
} TT}]wZ  
SortUtil.swap(data,i,lowIndex); p2pAvlNoF  
} +]!lS7nsW  
} \2!!L=&4G  
/oP^'""@je  
} :BZ0 7`9  
)iLM]m   
Shell排序: s: |M].  
y!Cc?$]_Y  
package org.rut.util.algorithm.support; bI ITPxz  
_ Jc2&(;  
import org.rut.util.algorithm.SortUtil; <n0{7#PDqw  
hU {-a`  
/** yfe'>]7  
* @author treeroot %%}A|,  
* @since 2006-2-2 lpC @I^:  
* @version 1.0 &=q! Wdw~  
*/ 9`Q@'( m  
public class ShellSort implements SortUtil.Sort{ IB$7`7  
jj&s} _75  
/* (non-Javadoc) q~Jq/E"f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SS3-+<z  
*/ fC<m^%*zgA  
public void sort(int[] data) { z@h~Vb&I  
for(int i=data.length/2;i>2;i/=2){ i^2IW&+}e}  
for(int j=0;j insertSort(data,j,i); %|IUqjg  
} F]=B'ZI  
} O6c\KFBSJ  
insertSort(data,0,1); W{Q)-y  
} pj{\T?(  
t&RruwN_;  
/** B;t=B_oK  
* @param data E_:QSy5G  
* @param j .{so  
* @param i 1mW%  
*/ oyeG$mpg  
private void insertSort(int[] data, int start, int inc) { YD_]!HK}  
int temp; AFm1t2,+;  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); < oI8-f  
} AXW!]=?X  
} nWgv~{,x  
} ]7/gJ>g,  
P]6}\ ]~  
} Y E1Hpeb  
9){  
快速排序: $kz!zjC'  
Fb_S&!  
package org.rut.util.algorithm.support; 2CLB1  
GjQfi'vCk  
import org.rut.util.algorithm.SortUtil; U}AX0*S  
WH$HI/%*m  
/** 5cTY;@@  
* @author treeroot ^R_e  
* @since 2006-2-2 @.9I3E-=  
* @version 1.0 v5$s#f<   
*/ x>3@R0A 1:  
public class QuickSort implements SortUtil.Sort{ ")`S0n5e  
q-&P=Yk  
/* (non-Javadoc) 6?gi_3g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uP|FJLY  
*/ SkP[|g'56  
public void sort(int[] data) { `deY i2z  
quickSort(data,0,data.length-1); R]L2(' B  
} [ ]p"3 i  
private void quickSort(int[] data,int i,int j){ a6nlt? 1?D  
int pivotIndex=(i+j)/2; 5P ke8K  
file://swap 32>x^>G=>  
SortUtil.swap(data,pivotIndex,j); _l&ucA  
`wO}Hz  
int k=partition(data,i-1,j,data[j]); 7 .+al)hl  
SortUtil.swap(data,k,j); nX[;^v/  
if((k-i)>1) quickSort(data,i,k-1); ZK dh%8C  
if((j-k)>1) quickSort(data,k+1,j); Sb"2Im>  
&Ocu#Cb  
} J!p<oW)a!  
/** 0HibY[_PbD  
* @param data BQNp$]5s  
* @param i `,#!C`E 9  
* @param j uHvaZMu  
* @return bZ5n,KQA5  
*/ MCy~@)-IN  
private int partition(int[] data, int l, int r,int pivot) { 4rp6 C/i  
do{ ]VjLKFb~U  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _z"o1`{w  
SortUtil.swap(data,l,r); <GZhH:  
} b! tludb  
while(l SortUtil.swap(data,l,r); pXW`+<g0  
return l; 8(lCi$  
} Lb~\Y n'z  
|uUuFm  
} i21QJ6jPcI  
+/N1_  
改进后的快速排序: {;n0/   
DY3:#X`4  
package org.rut.util.algorithm.support; n|KKby.$  
qgexb\x\4  
import org.rut.util.algorithm.SortUtil; e\N0@   
w}k B6o]  
/** ]|LgVXEpx  
* @author treeroot z8iENECwj  
* @since 2006-2-2 14l; *  
* @version 1.0 yT:!%\F9  
*/ Pj!%ym3A  
public class ImprovedQuickSort implements SortUtil.Sort { !S,pRS+  
R^tcr)(  
private static int MAX_STACK_SIZE=4096; fVUKvZ}P*  
private static int THRESHOLD=10; L@A9{,9Pl  
/* (non-Javadoc) hqW$k w  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 'NjSu64W  
*/ rPTfpeqN)  
public void sort(int[] data) { 0yQe5i}  
int[] stack=new int[MAX_STACK_SIZE]; g i4  
yq6LH   
int top=-1; ETelbj;0  
int pivot; Oz>io\P94  
int pivotIndex,l,r; 9dYOH)f  
q/'MS[C  
stack[++top]=0; yJJ8 "s~i  
stack[++top]=data.length-1; [V5-%w^  
/v$]X4 S`  
while(top>0){ vKkf2 7  
int j=stack[top--]; zJ_My&~  
int i=stack[top--]; =t.F2'<[Z  
L>:FGNf^H  
pivotIndex=(i+j)/2; m X:bA5db  
pivot=data[pivotIndex]; S7#0*2#[o  
bZ1 0v;  
SortUtil.swap(data,pivotIndex,j); `~E<Sf<M  
5f3!NeI  
file://partition *a4 b  
l=i-1; :SeLkQC  
r=j; Y_lCcu#OA  
do{ Wa/geQE1<  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); mxhW|}_-j  
SortUtil.swap(data,l,r); OfLM  
} ]+,nA R  
while(l SortUtil.swap(data,l,r); P:a*t[+  
SortUtil.swap(data,l,j); *NjMb{[ZQ  
Dauo(Uhuo  
if((l-i)>THRESHOLD){ k>-'AWH^v  
stack[++top]=i; \S5V}!_  
stack[++top]=l-1; buc*rtHfA  
} |wJ),h8/  
if((j-l)>THRESHOLD){ 6#-Z@fz%  
stack[++top]=l+1; 1eF@_Y^a!  
stack[++top]=j; ,whM22Af~{  
} U]mO7HK  
#VR`?n?,  
} ]E..43  
file://new InsertSort().sort(data); ~,+[M-  
insertSort(data); 't ;/,+:V  
} 1Kc{#+a^  
/** q8tug=c  
* @param data {5.?'vMp  
*/ jL2MW(d^Q  
private void insertSort(int[] data) { T-!|l7V~f  
int temp; pfNThMf  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4SBLu%=s%  
} Qv=Bq{N  
} dr>]+H=3E  
} cWc$ yE'  
]Y$&78u8t  
} o"f%\N0_8  
C7T;;1P?  
归并排序: LVWxd}0  
yOM -;h  
package org.rut.util.algorithm.support; h!~|6nj  
"pl[(rc+u  
import org.rut.util.algorithm.SortUtil; %rX\ P  
s'2y%E#  
/** ":z@c,  
* @author treeroot @US '{hO1p  
* @since 2006-2-2 ~.!?5(AH8z  
* @version 1.0 ,Zr  YJ<  
*/ WVsK rFZT  
public class MergeSort implements SortUtil.Sort{ uk1v7# p  
0-lPhnrp  
/* (non-Javadoc) n *Q4G}p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vLD:(qTi  
*/ >02i8:Tp5K  
public void sort(int[] data) { t2m  ^  
int[] temp=new int[data.length]; e4?<GT   
mergeSort(data,temp,0,data.length-1); ?WMi S]Q\  
} _4!7 zW^  
O]4W|WI3  
private void mergeSort(int[] data,int[] temp,int l,int r){ #SK#k<&P  
int mid=(l+r)/2; ~c9vdK  
if(l==r) return ; #{?m  
mergeSort(data,temp,l,mid); sCL/pb]  
mergeSort(data,temp,mid+1,r); Yoj~|qL  
for(int i=l;i<=r;i++){ >^sz5d+X  
temp=data; JJ*0M(GG  
} XC 57];-  
int i1=l; 1h& )I%`?  
int i2=mid+1; P=}H1 #  
for(int cur=l;cur<=r;cur++){ zl,bMtQ  
if(i1==mid+1) M55e=  
data[cur]=temp[i2++]; %y!   
else if(i2>r) U3(L.8(sA  
data[cur]=temp[i1++]; ~7KynE  
else if(temp[i1] data[cur]=temp[i1++]; )sMAhk|  
else AW]("pt  
data[cur]=temp[i2++]; \>w@=bq26  
} EgkZ$ah  
} G >I.  
s}z(|I rH  
} z2"2tFK  
q\-xg*'  
改进后的归并排序: WX+< 4j  
FA<Z37:  
package org.rut.util.algorithm.support; Z 5{*? 2  
|F8;+nAVF#  
import org.rut.util.algorithm.SortUtil; 1"*Nb5s  
U1OLI]P  
/** O1l4gduN|i  
* @author treeroot ~x76{.gT  
* @since 2006-2-2 #J'Z5)i|  
* @version 1.0 D>,$c  
*/ W ??;4  
public class ImprovedMergeSort implements SortUtil.Sort { 2{ jtQlc  
iA5* _tK5  
private static final int THRESHOLD = 10; =k[(rvU3  
]Hv*^Bak  
/* ])3lH%4-  
* (non-Javadoc) Q-H =wJ4R  
* ./aZV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q;{D8 #!  
*/ 9RbGa Y&  
public void sort(int[] data) { *q\HFI  
int[] temp=new int[data.length]; # khyy-B=  
mergeSort(data,temp,0,data.length-1); >Rx8 0  
} =[v2   
vr8J*36{  
private void mergeSort(int[] data, int[] temp, int l, int r) { YA1{-7'Q  
int i, j, k; ]JhDRJ\  
int mid = (l + r) / 2; R|cFpRe  
if (l == r) Sm~? zU[k/  
return; u|:UFz^p  
if ((mid - l) >= THRESHOLD) Cf WK6>  
mergeSort(data, temp, l, mid); %-0em!tUV  
else Q_UCF'f;}  
insertSort(data, l, mid - l + 1); x);?jxd  
if ((r - mid) > THRESHOLD) 61t-  
mergeSort(data, temp, mid + 1, r); q70YNk}  
else +J}k_'4&  
insertSort(data, mid + 1, r - mid); n?7hp%}  
U?+30{hb  
for (i = l; i <= mid; i++) { 'Sb6 w+  
temp = data; 7.F& {:@_  
} }(f,~?CP]  
for (j = 1; j <= r - mid; j++) { $u0+29T2O  
temp[r - j + 1] = data[j + mid]; 1.u gXD  
} FW6E)df  
int a = temp[l]; f%(e,KgW=  
int b = temp[r]; \?p9qR;"4  
for (i = l, j = r, k = l; k <= r; k++) { h}c6+@w&-  
if (a < b) { @$N*lrM2  
data[k] = temp[i++]; 2={K-s20  
a = temp; q%)*,I<  
} else { =~(LJPo6  
data[k] = temp[j--]; yF [@W<  
b = temp[j]; H/ B^N,oi  
} CC]@`R5  
} Is#v6:#^  
} U:T5o]P<  
cZ7F1H~  
/** b5iJ m-  
* @param data yx`r;|ds}  
* @param l ]#WX|0''^  
* @param i Hme@9(zD.  
*/ SFm.<^6  
private void insertSort(int[] data, int start, int len) { z!uB&2C{k  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 55jY` b .  
} -* -zU#2|  
} ix_$Ok  
} LRLhS<9  
} uDMUy"8&!  
z; z'`A  
堆排序: FC/>L  
"KQ\F0/  
package org.rut.util.algorithm.support; o*5e14W(:  
R}K5'`[%ZY  
import org.rut.util.algorithm.SortUtil; a 7mKshY(  
P PIG?fK)  
/** P^d . ,  
* @author treeroot lk *QV  
* @since 2006-2-2 +{l3#Y  
* @version 1.0 #,|_d>p:  
*/ O(WMTa'%  
public class HeapSort implements SortUtil.Sort{ =kZwB*7  
|M{,}.*CU  
/* (non-Javadoc) ysw6hVb  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?X5glDZ$  
*/ SieV%T0t1  
public void sort(int[] data) { 13NS*%~7[  
MaxHeap h=new MaxHeap(); PrYWha=c-  
h.init(data); Wb-'E%K  
for(int i=0;i h.remove(); '~vSH9nx/  
System.arraycopy(h.queue,1,data,0,data.length); 1:~m)"?I_^  
} p<^/T,&I  
f<t*#]<  
private static class MaxHeap{ ^9m]KEucd7  
Ee?K|_\${  
void init(int[] data){ OM&\Mo  
this.queue=new int[data.length+1]; MRY)m@*+6  
for(int i=0;i queue[++size]=data; 9pgct6BO  
fixUp(size); 'a}{s>{O  
} 2I7P}=  
} |z~?"F6 Y<  
:97`IV%  
private int size=0; T2d pn%I  
O6pjuhMx  
private int[] queue; H{BjxZ~)  
-4]6tt'G  
public int get() { ]k8XLgJ  
return queue[1]; ZBGI_9wZ  
} oAL-v428  
X DX_c@U  
public void remove() { ,'j5tU?c  
SortUtil.swap(queue,1,size--); it,%T)2H  
fixDown(1); wKYfqNCH  
} 38#(ruv  
file://fixdown mf3G$=[  
private void fixDown(int k) { LP~$7a  
int j; Rq 7ksTo  
while ((j = k << 1) <= size) { "hvw2lyp3  
if (j < size %26amp;%26amp; queue[j] j++; ZFzOW  
if (queue[k]>queue[j]) file://不用交换 S:d` z'  
break; Q3D xjD  
SortUtil.swap(queue,j,k); 8+gn Wy  
k = j; r,}Zc W+  
} 4q[r KNl  
} 'Zzm'pC  
private void fixUp(int k) { 1/n3qJyx2}  
while (k > 1) { s0:1G -I  
int j = k >> 1; ,d7@*>T&  
if (queue[j]>queue[k]) +a|4XyN  
break; DlP}Fp{  
SortUtil.swap(queue,j,k); %vksN$^  
k = j; j% nd  
} ~i \69q%  
} ^K"`k43{  
]?r8^LyZ4  
} i8{jMe!Sa  
d_`Ze.^   
} 0jXIx2y  
!xvPG  
SortUtil: >Cf`F{X' U  
Jx}5`{\  
package org.rut.util.algorithm; Xy{b(b;9  
mVkn~LD:0  
import org.rut.util.algorithm.support.BubbleSort; =4I361oMf  
import org.rut.util.algorithm.support.HeapSort; b{oNV-<&{  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y /+ D4^ L  
import org.rut.util.algorithm.support.ImprovedQuickSort; p.%$  
import org.rut.util.algorithm.support.InsertSort; D>mLSh  
import org.rut.util.algorithm.support.MergeSort; ;f><;X~KX  
import org.rut.util.algorithm.support.QuickSort; *0U(nCT&m  
import org.rut.util.algorithm.support.SelectionSort; U +]ab  
import org.rut.util.algorithm.support.ShellSort; |Mh;k 6  
]X5*e'  
/** a'\`Mi@rb  
* @author treeroot QV't+)uUVo  
* @since 2006-2-2 y`BLIEI  
* @version 1.0 "7 l}X{b  
*/ \yxr@z1_b  
public class SortUtil { E,rPM  
public final static int INSERT = 1; )#Id 2b~  
public final static int BUBBLE = 2; UJZa1p@L  
public final static int SELECTION = 3; {R#nGsrt;  
public final static int SHELL = 4; IP >An8+  
public final static int QUICK = 5; 2::T,Z  
public final static int IMPROVED_QUICK = 6; @iaN@`5I6s  
public final static int MERGE = 7; N>~*Jp2;  
public final static int IMPROVED_MERGE = 8; fSTEZH  
public final static int HEAP = 9; Nwc(<  
ijTtyTC  
public static void sort(int[] data) { M *}$$Fe|  
sort(data, IMPROVED_QUICK); =_XcG!"  
} 1#@'U90xf  
private static String[] name={  }QI*Ns  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" `A'*x]l  
}; X#o:-FKf  
ABSeX  
private static Sort[] impl=new Sort[]{ A=])pYE1  
new InsertSort(), 8RK\B%UW  
new BubbleSort(), QdRMp n}q  
new SelectionSort(), JDP#tA3  
new ShellSort(), JWBWa-  
new QuickSort(), s?2;u p*D  
new ImprovedQuickSort(), KyDBCCOv  
new MergeSort(), xs:{%ki  
new ImprovedMergeSort(), R0|X;3  
new HeapSort() & #|vGhA  
}; 7#&s G  
qEpBzQ&gX6  
public static String toString(int algorithm){ g&[g?L  
return name[algorithm-1]; 9\;EX  
} V *] !N  
#4Z$O(  
public static void sort(int[] data, int algorithm) { Vlf@T  
impl[algorithm-1].sort(data); 5 9 09O  
}  2AluH8X/  
,s2.l/5r;C  
public static interface Sort { YK-R|z6K  
public void sort(int[] data); &sRyM'XI  
} WP>O7[|  
/ [19ITZ  
public static void swap(int[] data, int i, int j) { #B?7{#.1  
int temp = data; &#;,P :.'  
data = data[j]; 4>|5B:  
data[j] = temp; 4[#.N 3Y4*  
} ,^[s4 =3X?  
} /j^zHrLN  
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