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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。 IFbN ]N0  
插入排序: G2yQHTbl  
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package org.rut.util.algorithm.support; (R]b'3,E$  
n{"e8vQx  
import org.rut.util.algorithm.SortUtil; JN-W`2  
/** -ZH6*7!  
* @author treeroot HX#$ ^@Q(  
* @since 2006-2-2 8SN4E  
* @version 1.0 a 9!.e rM  
*/ v[]&yD  
public class InsertSort implements SortUtil.Sort{ MDauHtF,  
h\/T b8  
/* (non-Javadoc) `s8!zy+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 1T 8|>2m 3  
*/ "?>hQM1R  
public void sort(int[] data) { om{aws;  
int temp; o&RNpP*  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); A5^tus/y  
} !'(QF9%Q  
} -eFq^KP2  
} )E c /5=A  
4tlLh`-8  
} &%;K_asV;  
lpnPd{kE  
冒泡排序: }K|40oO5  
' 1D1y'  
package org.rut.util.algorithm.support; 7e=s`j  
ZjveXrx  
import org.rut.util.algorithm.SortUtil; fjLS_Q ;h  
Yu: !l>  
/** s:*" b'  
* @author treeroot !"SuE)WM  
* @since 2006-2-2 Lnc>O'<5P9  
* @version 1.0 [!YSW'  
*/ SquuK1P=  
public class BubbleSort implements SortUtil.Sort{ -d *je{c |  
s&L 6C[  
/* (non-Javadoc) zRFvWOxC\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -DWnDku8=  
*/ zXGi  
public void sort(int[] data) { k3UKGP1  
int temp;  %Krf,H  
for(int i=0;i for(int j=data.length-1;j>i;j--){ bG/[mZpRT  
if(data[j] SortUtil.swap(data,j,j-1); j7qGZ"8ak  
} ]O0:0Z\  
} @i(;}rx  
} {7^D!lis  
} ~IQw?a.E  
ZDr&Alp)o  
} K9c5HuGy  
u&r+ylbs I  
选择排序: 6tN!]  
"f4atuuXa  
package org.rut.util.algorithm.support; (tQ0-=z  
]dL#k>$0q  
import org.rut.util.algorithm.SortUtil; a H *5(E]  
1? Im"  
/** -op(26:W<  
* @author treeroot UgD&tD0fp  
* @since 2006-2-2 I2)#."=Ew  
* @version 1.0 THmmf_w@  
*/ -GT&46hX  
public class SelectionSort implements SortUtil.Sort { sW0<f& 3  
'\R/-.  
/* jbTsrj"g  
* (non-Javadoc) tjbI*Pw7(  
* Bn5$TiTcl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) L~HL*~#d  
*/ a1g aB:w5n  
public void sort(int[] data) { GI)eq:K_U8  
int temp; S\ ) ~9?  
for (int i = 0; i < data.length; i++) { ?U(`x6\:  
int lowIndex = i; nE=,=K~  
for (int j = data.length - 1; j > i; j--) { A;gU@8m  
if (data[j] < data[lowIndex]) { Mcqym8,q|3  
lowIndex = j; =4804N7  
} et}%E9  
} k/ hNap'0  
SortUtil.swap(data,i,lowIndex); Ax'o|RE)x  
} "w:?WS  
} !c;BOCqa  
>tTu1#t  
} >.r> aH  
lR0WDJv  
Shell排序: O_^t u?x  
 f~w!Z  
package org.rut.util.algorithm.support; DGO\&^GT^  
x?RYt4S  
import org.rut.util.algorithm.SortUtil; O9R[F  
X*e<g=  
/** ;0-Y),  
* @author treeroot 3oMhsQz~z  
* @since 2006-2-2 dr]Pns9  
* @version 1.0 S(Q=2Y  
*/ 5'S~PQka*  
public class ShellSort implements SortUtil.Sort{ {!NX u  
*/y (~O6  
/* (non-Javadoc) 4x2,X`pe3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P:fcbfH+  
*/ Q$8K-5U%  
public void sort(int[] data) { i]}`e>fF  
for(int i=data.length/2;i>2;i/=2){ ]OLe&VRix  
for(int j=0;j insertSort(data,j,i); i2 G.<(3O  
} aW(H n[}^  
} G }U'?p  
insertSort(data,0,1); <L+y 6B  
} evGUl~</~  
;ji[ "b  
/** PiF&0;  
* @param data agj_l}=gO  
* @param j pvYBhTz0  
* @param i 67A g.f6-  
*/ Z&Xp9"j,@;  
private void insertSort(int[] data, int start, int inc) { }$Z0v`  
int temp; h+j{;evN  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); G!.%Qqs  
} `!@d$*:'  
}  r0,XR  
} cc{^0JT  
BTDUT%Yfg  
} vY!'@W  
V~fPp"F  
快速排序: pd}Cg'}X  
4N8(WI"4S  
package org.rut.util.algorithm.support; N'~l,{  
uc]`^,`2/  
import org.rut.util.algorithm.SortUtil; \JbOT%1  
~ ^*;#[<  
/** nj6|WJ  
* @author treeroot .^V9XN{'a  
* @since 2006-2-2 R_2T"  
* @version 1.0 J4#rOS  
*/ =pd#U  
public class QuickSort implements SortUtil.Sort{  giORc  
-^$`5Rk  
/* (non-Javadoc) Sd+bnq%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^]X\boWlI  
*/ '?uwUBi  
public void sort(int[] data) { rObg:(z&\  
quickSort(data,0,data.length-1); qaiR329fx  
} ,_z"3B)]  
private void quickSort(int[] data,int i,int j){ ,dXJCX8so  
int pivotIndex=(i+j)/2; {P'^X+B0*  
file://swap xP-\)d-.aN  
SortUtil.swap(data,pivotIndex,j); maOt/-  
T_Cj=>L  
int k=partition(data,i-1,j,data[j]); +{L=cWA"  
SortUtil.swap(data,k,j); S,vh  
if((k-i)>1) quickSort(data,i,k-1); U o[\1)  
if((j-k)>1) quickSort(data,k+1,j); ZK5 wZU  
#D-Ttla  
} HUalD3 \  
/** 'g:.&4x_w  
* @param data /q5!p0fH*  
* @param i ;}}k*< Z  
* @param j GS+Z(,J>=  
* @return 74fE%;F  
*/ "ifv1KZ#  
private int partition(int[] data, int l, int r,int pivot) { C9^C4   
do{ _*fOn@Vwo  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); >>%E?'9A  
SortUtil.swap(data,l,r); 3gs!ojG  
} #83pitcc  
while(l SortUtil.swap(data,l,r); y&6 pc   
return l; (D2N_l(`<  
} .O6(QI*  
s2"<<P[q'  
} HpIW H*  
`oOVR6{K9  
改进后的快速排序: s y>}2orj~  
`Ha<t.v(  
package org.rut.util.algorithm.support; Iad&Z8E  
'a G`qPB  
import org.rut.util.algorithm.SortUtil; N2 .Ym;^  
2:G/Oj h&]  
/** WB5M ![  
* @author treeroot zI"1.^Trn  
* @since 2006-2-2  }~Ir &   
* @version 1.0 97vQM  
*/ S!h=HE  
public class ImprovedQuickSort implements SortUtil.Sort { K)W:@,*  
ZKt`>KZ  
private static int MAX_STACK_SIZE=4096; Yht |^ =a  
private static int THRESHOLD=10; :gTtWJ04]  
/* (non-Javadoc) `X%Qt ~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) YnlZyw!  
*/ S|r,RBeZ  
public void sort(int[] data) { =w ! 6un  
int[] stack=new int[MAX_STACK_SIZE]; +%R{j|8#  
t6Nkv;)>@  
int top=-1; (?1/\r  
int pivot; z[WdJN{  
int pivotIndex,l,r; /kAbGjp0  
6[Wv g  
stack[++top]=0; DLO2$d  
stack[++top]=data.length-1; Ie(M9QMp  
_b9>ZF~  
while(top>0){ rA /T>ZM  
int j=stack[top--]; &]O^d4/  
int i=stack[top--]; X#Hl<d2  
ZuT5}XxF  
pivotIndex=(i+j)/2; Y_/w}HB  
pivot=data[pivotIndex]; uZa)N-=b2  
Y'yGhpT~  
SortUtil.swap(data,pivotIndex,j); ;%Kh~  
;]>a7o  
file://partition 7M<co,"  
l=i-1; Bdm05}c@u  
r=j; ak\[+wQ  
do{ ^ /)%s3  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); L:7 kp<E  
SortUtil.swap(data,l,r); TGGbO:s3  
} 4o<' fY  
while(l SortUtil.swap(data,l,r); 2%vG7o,#  
SortUtil.swap(data,l,j); {_ {zs!r  
EN5F*s@r  
if((l-i)>THRESHOLD){ g\pLQH  
stack[++top]=i; }pKKNZ`[  
stack[++top]=l-1; 28>/#I9/]  
} IQQ>0^Q~  
if((j-l)>THRESHOLD){ ]v#T9QQN  
stack[++top]=l+1; Bo0f`EC I  
stack[++top]=j; Z@0IvI  
} ZhFlR*EQ  
4e?MthJ>  
} Qn}M  
file://new InsertSort().sort(data); UZ!It>  
insertSort(data); 03gYl0B  
} "EnxVV  
/** VjJ}q*/3e  
* @param data |eK^Yhym  
*/ 84/#,X!=s  
private void insertSort(int[] data) { l:*.0Tj  
int temp; -'T^gEd) c  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); h059DiH  
} >dnDN3x  
} uOPLJ?%  
} 8aTo TA7JA  
?8YbTn1f)  
} ijmGk:L(  
_|7bpt9  
归并排序: wZt2%+$6m  
\hP.Q;"MtO  
package org.rut.util.algorithm.support; 2FQTu*p&B  
{T3~js   
import org.rut.util.algorithm.SortUtil; 7GRPPh<4  
a}[rk*QmZ  
/** /%TL{k&m$  
* @author treeroot ?~<NyJHN%  
* @since 2006-2-2 ]{18-=  
* @version 1.0 x!fgZr{  
*/ q-qz-cR  
public class MergeSort implements SortUtil.Sort{ EP{/]T  
(#nB90E{*  
/* (non-Javadoc) M:oZk&cs  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) f=- R<l  
*/ VYkUUp  
public void sort(int[] data) { @_ Tq>tOr&  
int[] temp=new int[data.length]; 6Oy6r  
mergeSort(data,temp,0,data.length-1); ohi0_mBz  
} #!t6'*  
,3W,M=j)  
private void mergeSort(int[] data,int[] temp,int l,int r){ Y?:" nhN  
int mid=(l+r)/2; <MJ-w1A  
if(l==r) return ; :A5h<=[  
mergeSort(data,temp,l,mid); .@psW0T%  
mergeSort(data,temp,mid+1,r); NtkZ\3  
for(int i=l;i<=r;i++){ `:W}yo<F  
temp=data; 8Fv4\dr  
} gdS@NUM  
int i1=l; ($t;Xab  
int i2=mid+1; XRi37|p  
for(int cur=l;cur<=r;cur++){ eg"A?S  
if(i1==mid+1) [X ]XH  
data[cur]=temp[i2++]; Q}#xfrprF  
else if(i2>r) y<PQ$D)  
data[cur]=temp[i1++]; zA| )9Dq  
else if(temp[i1] data[cur]=temp[i1++]; 6 2t 9SY  
else gSkY c{b  
data[cur]=temp[i2++]; wI?AZd;`'  
} :VE0eJ]J6  
} oo|Nu+  
K+`deH_d  
} } wx(P3BHD  
f<>CSjQ4c  
改进后的归并排序: fzUG1|$e  
Nb)Mh  
package org.rut.util.algorithm.support; ( ; _AP.  
" Rn@yZV  
import org.rut.util.algorithm.SortUtil; UQjYWXvi  
pW_mS|  
/** *A0*.>@N  
* @author treeroot izR#XeBm  
* @since 2006-2-2 rLA^ &P:  
* @version 1.0 L$ZsNs+  
*/ PoD/i@  
public class ImprovedMergeSort implements SortUtil.Sort { &;U F,  
3|D.r-Q  
private static final int THRESHOLD = 10; f{h2>nEj \  
v.c.5@%%o  
/* *S'?u_Y7  
* (non-Javadoc) a0 's6C  
* 4)Ew rU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q oEZ>  
*/ .x1.`Y   
public void sort(int[] data) { =.qPjp_Qd  
int[] temp=new int[data.length]; G$2Pny<!  
mergeSort(data,temp,0,data.length-1); 9/{ 8Y&  
} A @e!~  
z&z5EtFUTh  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,r;E[k@  
int i, j, k;  p]jG ,S  
int mid = (l + r) / 2; K4b2)8  
if (l == r) @{ L|&Mk!  
return; bjq.nn<=  
if ((mid - l) >= THRESHOLD) o)8VJ\ &  
mergeSort(data, temp, l, mid); kArF Gb2c  
else L;fz7?_j  
insertSort(data, l, mid - l + 1); =)J )xH!N  
if ((r - mid) > THRESHOLD) (/7cXd@\6  
mergeSort(data, temp, mid + 1, r); YD#L@:&gv  
else ?O0,)hro  
insertSort(data, mid + 1, r - mid); ~J >Jd  
_)6r@fZ.p  
for (i = l; i <= mid; i++) { r(<91~Ww  
temp = data; 3gv?rJV  
} r9p ((ir  
for (j = 1; j <= r - mid; j++) { ;rl61d}NH#  
temp[r - j + 1] = data[j + mid]; ~I]aUN  
} O~Svk'.)  
int a = temp[l]; fC/P W`4Ae  
int b = temp[r]; F(w<YU %6  
for (i = l, j = r, k = l; k <= r; k++) { CKX3t:HP0  
if (a < b) { d"S\j@  
data[k] = temp[i++]; _p<wATv?7t  
a = temp; %&wi@ *#  
} else { 7wHd*{^9N  
data[k] = temp[j--]; h~ q5GhY!9  
b = temp[j]; qA t#0  
} CHDt^(oa!B  
} xu >grj  
} 8v6AfTo%  
RtEx WTc  
/** Q1!+wC   
* @param data L;=LAQ6[  
* @param l 4^!%>V"d/  
* @param i |#Q0UM|'Q  
*/ EmyE%$*T  
private void insertSort(int[] data, int start, int len) { 1w+)ne_&  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); gFXz:!A  
} 31N5dIi,  
} [Bj\h7 G  
} w8F`RRHEE  
} 'fZ\uMdTx  
hJ?PV@xy  
堆排序: ^~s!*T)\  
H-eHX3c7  
package org.rut.util.algorithm.support; )U{\c2b  
hLT?aQLx  
import org.rut.util.algorithm.SortUtil; H%{k.#O  
$)6x3&]P  
/** 7_J0[C!G  
* @author treeroot }/jWa |)f  
* @since 2006-2-2 gI/(hp3ob  
* @version 1.0 {uxTgX  
*/ I(j$^DA.  
public class HeapSort implements SortUtil.Sort{ >|mZu)HIY;  
8Ep!  
/* (non-Javadoc) 3teP6|K'g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xdMY2u  
*/ z7pw~Tqlz  
public void sort(int[] data) { eKRE1DK  
MaxHeap h=new MaxHeap(); k{bC3)'$#R  
h.init(data); {gzVbZ#  
for(int i=0;i h.remove(); CW FE{  
System.arraycopy(h.queue,1,data,0,data.length); ),2|TlQ  
} 8_M"lU0[  
Q~`{^fo1  
private static class MaxHeap{ 'ZAIe7i&  
KLjvPT\  
void init(int[] data){ |{MXDx  
this.queue=new int[data.length+1]; V/RV,K1/  
for(int i=0;i queue[++size]=data; ^JGwCHeb|H  
fixUp(size); PoLk{{l3  
} xRZ/[1f!  
}  hRqr  
H`jnChD:M'  
private int size=0; B/Ltb^a  
s0DT1s&  
private int[] queue; 'f8'|o)  
;_0frX  
public int get() { $y%IM`/w  
return queue[1]; LtV,djk  
} "d2JNFIHb  
u,]qrlx{  
public void remove() { : Xu9` 5  
SortUtil.swap(queue,1,size--); gP>W* ]0r1  
fixDown(1); lBudC  
} z6|kEc"{  
file://fixdown z&\N^tBv  
private void fixDown(int k) { Y/ %XkDC~  
int j; 7tne/Yz  
while ((j = k << 1) <= size) { szD9z{9"y  
if (j < size %26amp;%26amp; queue[j] j++; Az/B/BLB  
if (queue[k]>queue[j]) file://不用交换 g*!1S  
break; Bve',.xH  
SortUtil.swap(queue,j,k); eV"Uv3  
k = j; dV /Es  
} .UvDew/Y  
} ,:0!+1  
private void fixUp(int k) { szXqJG8|  
while (k > 1) { IA$=  
int j = k >> 1; ^-F#"i|Cn  
if (queue[j]>queue[k]) h;R>|2A  
break; G[n;%c~`+  
SortUtil.swap(queue,j,k); )_}xK={  
k = j; f/"IC;<~t>  
} FytGg[#]  
} 2 ]n4)vv,  
WA.c.{w\  
} t ;fJ`.  
ULO_?4}B  
} _>3#dk  
$"va8,  
SortUtil: qRq4PQ@  
En4!-pWHQ  
package org.rut.util.algorithm; O\h%ZLjfO  
#"C!-kS'=  
import org.rut.util.algorithm.support.BubbleSort; l< HnPR/  
import org.rut.util.algorithm.support.HeapSort; !Z0S@]C  
import org.rut.util.algorithm.support.ImprovedMergeSort; )S}.QrG  
import org.rut.util.algorithm.support.ImprovedQuickSort; bGK-?BE5+A  
import org.rut.util.algorithm.support.InsertSort; 6XnUs1O  
import org.rut.util.algorithm.support.MergeSort; o\fPZ`p-m~  
import org.rut.util.algorithm.support.QuickSort; RFq=`/>dG  
import org.rut.util.algorithm.support.SelectionSort; X.ZG-TC  
import org.rut.util.algorithm.support.ShellSort; i O$ ?No  
[7  t  
/** C8=rsh  
* @author treeroot /l8w b~vl  
* @since 2006-2-2 U&SSc@of  
* @version 1.0 9t8ccr  
*/ A,c_ME+DVB  
public class SortUtil {  O`Htdnu  
public final static int INSERT = 1; SZ:R~4 A  
public final static int BUBBLE = 2; N|8^S  
public final static int SELECTION = 3; ),$^h7[n  
public final static int SHELL = 4; IR32O,)  
public final static int QUICK = 5; {MUO25s02  
public final static int IMPROVED_QUICK = 6; 4L r,}t A  
public final static int MERGE = 7; X^i3(N  
public final static int IMPROVED_MERGE = 8; w:](F^<s,  
public final static int HEAP = 9; v~0lZe  
=w<iYO  
public static void sort(int[] data) { ,V''?@  
sort(data, IMPROVED_QUICK); >f D%lq;  
} Ex6Kxd}8  
private static String[] name={ R<^E?FI   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 9f CU+s  
}; bNHs jx@  
rddn"~lm1  
private static Sort[] impl=new Sort[]{ v!=e]w6{  
new InsertSort(), Z1p%6f`  
new BubbleSort(), w9Nk8OsL  
new SelectionSort(), &SPIu,  
new ShellSort(), G]dHYxG  
new QuickSort(), e~nh95  
new ImprovedQuickSort(), I<" UQ\)  
new MergeSort(), iZ0(a   
new ImprovedMergeSort(), :Ye~I;" 8  
new HeapSort() rEWuWv$  
}; "$q"Kilj%  
`W7;-  
public static String toString(int algorithm){ #IeG/t(  
return name[algorithm-1]; p*JP='p  
} @P[%6 d  
mS.!lkV  
public static void sort(int[] data, int algorithm) { Ds@K%f(.?w  
impl[algorithm-1].sort(data); B5_QH8kt7  
} `.wgRUhFH;  
w1 A-_  
public static interface Sort { slLTZ]  
public void sort(int[] data); 0|{":i_s  
} 1uz K(j8w  
ncpA\E;ff^  
public static void swap(int[] data, int i, int j) { T,B%iZgCh  
int temp = data; QRF:6bAxsL  
data = data[j]; #nKGU"$+  
data[j] = temp; k"cKxzB  
} G$~hAZ  
} Y"dTm;&  
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