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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。 an5kR_=  
插入排序: Q Fqv,B\<  
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package org.rut.util.algorithm.support; rL+n$p X-  
n^(yW  
import org.rut.util.algorithm.SortUtil; )p_LkX(  
/** ^~IcQ!j/5  
* @author treeroot E@}j}/%'O  
* @since 2006-2-2 l8d%hQVqT  
* @version 1.0 u~T$F/]k>  
*/ H;!hp0y  
public class InsertSort implements SortUtil.Sort{ f*&JfP  
Fea\ eB  
/* (non-Javadoc) Jn[ K0GV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) $5AtI$TV_!  
*/ 5pyvs;As  
public void sort(int[] data) { <T% hfW  
int temp; <`p'6n79  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 7[<sl35  
} &,kB7r"  
} I;4CvoT  
} `1v!sSR0R  
$aI MQ[(  
} O]LuL&=s y  
S<9d^= a  
冒泡排序: l@F e(^5E  
78BuD[<X-  
package org.rut.util.algorithm.support; vl(v1[pU  
>2{HH\  
import org.rut.util.algorithm.SortUtil; iiDkk  
E4@fP] R+  
/** !eoec2h#5  
* @author treeroot v#2qwd3x  
* @since 2006-2-2 (_5+`YsV  
* @version 1.0 !3v"7l{LF  
*/ snNg:rT L  
public class BubbleSort implements SortUtil.Sort{ 4< >:]  
'>3RZ& O  
/* (non-Javadoc) 2EcYO$R!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hLD;U J?S  
*/ 3E@&wpj  
public void sort(int[] data) { 3Qr!?=nf  
int temp; &rWJg6/  
for(int i=0;i for(int j=data.length-1;j>i;j--){ EUS]Se2  
if(data[j] SortUtil.swap(data,j,j-1); Y9ce"*b  
} sO-R+G/^7  
} Kd1\D!#!6  
} %,q#f#  
} Cx'=2Y7  
ur[bh  
} E4ee_`p  
fy4JW,c  
选择排序: bUB6B  
rAdcMFW  
package org.rut.util.algorithm.support; 7B2Og{P  
'^Np<  
import org.rut.util.algorithm.SortUtil; a~EEow;A  
VQ 3&  
/** o=2`N2AL  
* @author treeroot HUI!IOh  
* @since 2006-2-2 ZKTBjOa]*  
* @version 1.0 $iJ #%&D  
*/ ,$[lOFs  
public class SelectionSort implements SortUtil.Sort { >2a#|_-T  
phSP+/w  
/* _)" 5 gv  
* (non-Javadoc) % 7:  
* | lfPd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uCr  
*/ ZSb+92g{L$  
public void sort(int[] data) { \$UU/\  
int temp; Z|wDM^Lf  
for (int i = 0; i < data.length; i++) { IT33E%G  
int lowIndex = i; FKm2slzb  
for (int j = data.length - 1; j > i; j--) { "t`e68{Ls  
if (data[j] < data[lowIndex]) { %LW~oI.  
lowIndex = j; ? D'-{/<4  
} ?`}U|]c  
} t\0JNi$2  
SortUtil.swap(data,i,lowIndex); 9:~^KQ{?  
} j zp%.4/j  
} hlEvL  
qT%E[qDS  
} H9[.#+ln  
50`r}s}  
Shell排序: cIkLdh   
j* ?MFvwE  
package org.rut.util.algorithm.support; svgi!=  
qeGOSGc_  
import org.rut.util.algorithm.SortUtil; T^>cT"ux_  
#2=30  
/** C`K/ai{4  
* @author treeroot /UAj]U  
* @since 2006-2-2 ^jA^~h3(W  
* @version 1.0 mL+ps x+  
*/ `8Ix&d3F  
public class ShellSort implements SortUtil.Sort{ %hQ`b$07t  
Z)0R$j`2  
/* (non-Javadoc) dGN*K}5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @) wXP@7  
*/ c+VUk*c3  
public void sort(int[] data) { qQryv_QP  
for(int i=data.length/2;i>2;i/=2){ Jy$-)  
for(int j=0;j insertSort(data,j,i); J],BO\ECH  
} c6.|; 4  
} c5u?\  
insertSort(data,0,1); =p:6u_@XWj  
} dksnW!  
sS|5x  
/** $^F2  
* @param data SOJHw6  
* @param j L;<]wKs  
* @param i 35et+9  
*/ C%h_!z":  
private void insertSort(int[] data, int start, int inc) { _uacpN/<|  
int temp; c-{]H8$v  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ymu#u   
} \!Pm^FD .  
} yR-.OF,c  
} nMqU6X>P!  
NU"X*g-x^  
} $ :/1U$  
PeZ=ONY5  
快速排序: >EG;2]M&  
b9Nw98`  
package org.rut.util.algorithm.support; `. Z".  
U6"50G~u  
import org.rut.util.algorithm.SortUtil; EO^0sF<  
O,PHAwVG%L  
/** Q}]u n]]Zt  
* @author treeroot 4}`MV.  
* @since 2006-2-2 ?e*vvu33!  
* @version 1.0 eyOAG4QTV  
*/ f}A^rWO  
public class QuickSort implements SortUtil.Sort{ Px`yD3  
-)/>qFj )  
/* (non-Javadoc) iZF{9@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) es{ 9[RHK  
*/ ;+\;^nS3d  
public void sort(int[] data) { ,KWeW^z'7  
quickSort(data,0,data.length-1); [;}c@  
} Rp1OC  
private void quickSort(int[] data,int i,int j){ _GS2&|7`  
int pivotIndex=(i+j)/2; e5Z\v0  
file://swap =W?c1EPLCx  
SortUtil.swap(data,pivotIndex,j); :.^{!  
D!CGbP(  
int k=partition(data,i-1,j,data[j]); OXo-(HLE  
SortUtil.swap(data,k,j); @g{ " E6  
if((k-i)>1) quickSort(data,i,k-1); ,wjL3c  
if((j-k)>1) quickSort(data,k+1,j); W\/0&H\i  
.x&>H  
} X9>ujgK  
/** wP'`!O[W  
* @param data `*B8IT)  
* @param i sz5@=  
* @param j ! JN@4  
* @return f/xBR"'  
*/ |?8wyP  
private int partition(int[] data, int l, int r,int pivot) { \% (R~ H  
do{ S<44{ oH  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); x<"e  
SortUtil.swap(data,l,r); vv3?ewr y  
} $k dfY'u  
while(l SortUtil.swap(data,l,r); FM5$83Q  
return l; Nz8iU@!a  
} [(1O_X(M  
=0A{z#6  
} M&L"yQA  
|2 Dlw]d  
改进后的快速排序: mdwY48b  
+KZc"0?  
package org.rut.util.algorithm.support; X~0P+E#  
yTk9+>  
import org.rut.util.algorithm.SortUtil; -kkXyO8js  
ZD*>i=S  
/** g`6S*&8I  
* @author treeroot K% ;O$ >  
* @since 2006-2-2 !zeBxR$&o  
* @version 1.0 Adh CC13B  
*/ IkupW|}rc  
public class ImprovedQuickSort implements SortUtil.Sort { V6c?aZ,O  
#RcmO **  
private static int MAX_STACK_SIZE=4096; z&eJ?wb  
private static int THRESHOLD=10; jU=)4nx  
/* (non-Javadoc) FU<rE&X2:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }k%>%xQ.  
*/ 5<61NnZ  
public void sort(int[] data) { _=rXaTp  
int[] stack=new int[MAX_STACK_SIZE]; ,YH.n>`s+  
{)G3*>sG3  
int top=-1; 9P]TIV.  
int pivot; .Xr_BJ _  
int pivotIndex,l,r; 1i{B47|  
&]5<^?3  
stack[++top]=0; Zhw _L  
stack[++top]=data.length-1; d(&vIjy  
T]+*} C  
while(top>0){ Z]aSo07  
int j=stack[top--]; YWTo]DJV  
int i=stack[top--]; sM4N`$Is23  
m<j ^cU#J  
pivotIndex=(i+j)/2; 3B,nHU  
pivot=data[pivotIndex]; L\"$R":3{d  
Z|)~2[Roa  
SortUtil.swap(data,pivotIndex,j); b{sFN !  
q.*qZ\;K  
file://partition \]^|IViIQ  
l=i-1; nC z[#t  
r=j; ]M_)f  
do{ 4;_.|!LN  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Q)v8hNyUmA  
SortUtil.swap(data,l,r); sbgRl%  
} ; qvZ*  
while(l SortUtil.swap(data,l,r); +ISB"a  
SortUtil.swap(data,l,j); Re=bJ|wo  
8s|r'  
if((l-i)>THRESHOLD){ a-7nA  
stack[++top]=i; Dq\#:NnKvx  
stack[++top]=l-1; :D(:( `A=  
} P0W%30Dh  
if((j-l)>THRESHOLD){ hcej?W8j  
stack[++top]=l+1; 9[:nW p^  
stack[++top]=j; Odagaca  
} GG7N!eZ  
J9 /w_,,R$  
} f}*Xz.[bCp  
file://new InsertSort().sort(data); 4((Z8@iX/  
insertSort(data); 9~N7hLT  
} BWd?a6nU}  
/** -cG?lEh <  
* @param data B3K%V|;z )  
*/ a"~W1|JC"  
private void insertSort(int[] data) { e{"d6pF=  
int temp; $UKDXQF"  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |>VHV} 4)<  
} qWo|LpxWt  
} DD;PmIW  
} "|f;   
m|p}Jf!  
} A=BpB}b  
T%Z`:mf  
归并排序: ~]N% {;F}  
2PRGwK/  
package org.rut.util.algorithm.support; ? [ =P  
Oy z=|[^,W  
import org.rut.util.algorithm.SortUtil; cLamqZf3  
MECR0S9  
/** aX0sy\Z]j  
* @author treeroot ^E>}A  
* @since 2006-2-2 O#9Q+BD  
* @version 1.0 h4sEH  
*/  xU)~)eK  
public class MergeSort implements SortUtil.Sort{ qbB.Z#w  
>GqIpfn  
/* (non-Javadoc) GJ!usv u  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x< imMJ  
*/  d+=;sJ  
public void sort(int[] data) { i^j{l_-JE  
int[] temp=new int[data.length]; W&G DE  
mergeSort(data,temp,0,data.length-1); 594$X@ !v  
} \,~gA   
IDv@r\Xw  
private void mergeSort(int[] data,int[] temp,int l,int r){ ; <3w ,r  
int mid=(l+r)/2; W.>yIA%  
if(l==r) return ; !1|f,9C  
mergeSort(data,temp,l,mid); x%LWcT/  
mergeSort(data,temp,mid+1,r); .nT"f>S&'  
for(int i=l;i<=r;i++){ x}72jJe`  
temp=data; t,+p!"MRY  
} 7v1}8Uk  
int i1=l; }**^ g:  
int i2=mid+1; @@}A\wA-  
for(int cur=l;cur<=r;cur++){ UT"L5{c  
if(i1==mid+1) A9F Z`  
data[cur]=temp[i2++]; h%#@Xd>.  
else if(i2>r) v)BUt,A  
data[cur]=temp[i1++]; I9B B<~4o  
else if(temp[i1] data[cur]=temp[i1++]; Bojm lVg  
else HD Eqq  
data[cur]=temp[i2++]; )07M8o !^l  
} QiY7m<3  
} tBdvk>d  
erqg|TsFj  
} "x&H*"  
](^VEm}w;  
改进后的归并排序: MwXgaSV  
%$Mvq&ZZ  
package org.rut.util.algorithm.support; M,|o2'  
SrU,-mA W  
import org.rut.util.algorithm.SortUtil; OpYq qBf_  
@ -g^R4e<  
/** *j8w" 4  
* @author treeroot &:w{[H$-  
* @since 2006-2-2 !i{@B  
* @version 1.0 nbhx2@Teqe  
*/ *F2obpU  
public class ImprovedMergeSort implements SortUtil.Sort { 9v0f4Pbxm  
#kk_iS>8  
private static final int THRESHOLD = 10; Nqz-Mr`  
I5PaY.i  
/*  5Gg`+o  
* (non-Javadoc) @zSoPDYv,  
* H`m| R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %/s:G)  
*/ Onby=Y o6  
public void sort(int[] data) { 3K P6M=  
int[] temp=new int[data.length]; $  5  
mergeSort(data,temp,0,data.length-1); vP? "MG  
} }Li24JK  
zaR~fO  
private void mergeSort(int[] data, int[] temp, int l, int r) { BwrMRMq"  
int i, j, k; [K%J t  
int mid = (l + r) / 2; [JsQ/|=z  
if (l == r) lLo FM  
return; X=_N7!  
if ((mid - l) >= THRESHOLD) sLb[ZQ;j  
mergeSort(data, temp, l, mid); H#G'q_uHH  
else PJ9JRG7j  
insertSort(data, l, mid - l + 1); H?M8j] R-)  
if ((r - mid) > THRESHOLD) r's4-\  
mergeSort(data, temp, mid + 1, r); 7RTp+FC]  
else dAohj QH:  
insertSort(data, mid + 1, r - mid); ( 8k3z`  
>lN{FJ  
for (i = l; i <= mid; i++) { r!#NFek}  
temp = data; Qq^>7OU>Co  
} A.*}<  
for (j = 1; j <= r - mid; j++) { TE^BfAw@  
temp[r - j + 1] = data[j + mid]; Uo5l =\  
} b'uH4[zX%  
int a = temp[l]; kQwBrb 4  
int b = temp[r]; EVrOu""  
for (i = l, j = r, k = l; k <= r; k++) { #W'jNX,h  
if (a < b) { >=[w{Vn'Mf  
data[k] = temp[i++]; ,]1K^UeZ  
a = temp; !dStl:B  
} else { `QAotSO+  
data[k] = temp[j--]; jcv3ES^  
b = temp[j]; \*1pFX#  
} EivZI<<a  
} .Mdxbs6.C  
} D@FJVF7c  
L0_R2E A  
/** 4:5CnK  
* @param data 315Rk!{AJ  
* @param l !2$O^ }6"  
* @param i \} P}H  
*/ OT\[qaK  
private void insertSort(int[] data, int start, int len) { zT`LPs6T  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K%$%9y  
} , B h[jb`y  
} )# M*@e$k  
} Ga"$_DyM  
} 5}E8Tl  
k g0Z(T:&8  
堆排序: 'l!tQD!  
p8Ts5n  
package org.rut.util.algorithm.support; \P+lb-~\"  
Hq< Vk.Nk  
import org.rut.util.algorithm.SortUtil; SPn0D9 b]  
g_5:o 3s  
/** +mYD DlvI  
* @author treeroot rG}o!I`z  
* @since 2006-2-2 pkM_ @K  
* @version 1.0 '$UlJDZ  
*/ mdtq-v  
public class HeapSort implements SortUtil.Sort{ j ]F  Zy  
r[JgCj+$&  
/* (non-Javadoc) {{SeD:hx  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l%rwJLN1  
*/ /t(dhz&xN  
public void sort(int[] data) {  5!NK  
MaxHeap h=new MaxHeap(); km4::'(6  
h.init(data); t/#[At5p=  
for(int i=0;i h.remove(); 9#@dQ/*  
System.arraycopy(h.queue,1,data,0,data.length); QY/36gK  
} 4JT9EKo  
K.dgQ-vn  
private static class MaxHeap{ zl=RK  
pEw &i  
void init(int[] data){ RiIJ#:6+^I  
this.queue=new int[data.length+1]; Ck/4h Z  
for(int i=0;i queue[++size]=data; Ti=~ycwi  
fixUp(size); \:'=ccf  
} U;LbP -{B  
} m("! M~1  
 Jx[IHE  
private int size=0; =k2In_  
bWW$_S pr  
private int[] queue; qWfG@hn  
AN\:  
public int get() { '&xv)tno  
return queue[1]; K\`L>B. 1  
} mflH&Bx9  
x$cs_q]J  
public void remove() { ^$4d'  
SortUtil.swap(queue,1,size--); 4M}u_}9  
fixDown(1); F9^8/Z  
} N;9@-Tb  
file://fixdown wh<+.Zp  
private void fixDown(int k) { R]0awV1b  
int j; e3yBB*@  
while ((j = k << 1) <= size) { w<lHY=z E  
if (j < size %26amp;%26amp; queue[j] j++; {]n5h#c 5*  
if (queue[k]>queue[j]) file://不用交换 @K7#}7,t  
break; U:M?Ji5CY  
SortUtil.swap(queue,j,k); /0uZ(F|>I  
k = j; #e((F,1z  
} Mp:tcy,*  
} ^^qB=N[';  
private void fixUp(int k) { H$9--p  
while (k > 1) { SYOND>E  
int j = k >> 1; l23_K7  
if (queue[j]>queue[k]) /o*r[g7<  
break; BHy#g>KUF  
SortUtil.swap(queue,j,k); 6HW<E~G'6  
k = j; .nJErC##  
} loZJV M  
} y<.0+YL-e+  
(A}##h  
} ;3s_#L  
L 5J=+k,  
} =cs;avtL  
)Fe-C  
SortUtil: Eb7qM.Q] &  
l4I@6@  
package org.rut.util.algorithm; ZTfs&5  
D0Oh,Fe#M\  
import org.rut.util.algorithm.support.BubbleSort; <(TTYf8lS  
import org.rut.util.algorithm.support.HeapSort; x JQde 4  
import org.rut.util.algorithm.support.ImprovedMergeSort; }eXzs_  
import org.rut.util.algorithm.support.ImprovedQuickSort; =toqEm~  
import org.rut.util.algorithm.support.InsertSort; j{?,nJdQ  
import org.rut.util.algorithm.support.MergeSort; 2$. ubA  
import org.rut.util.algorithm.support.QuickSort; (30{:o&^  
import org.rut.util.algorithm.support.SelectionSort; ;;pxI5  
import org.rut.util.algorithm.support.ShellSort; c^S^"M|  
9[N+x2q  
/** lX/6u E_%  
* @author treeroot dq%7A=-  
* @since 2006-2-2 jhr{JApbJv  
* @version 1.0 :vz_f$=  
*/ g4cmYg3  
public class SortUtil { *z!!zRh3x  
public final static int INSERT = 1; m64 6|G5  
public final static int BUBBLE = 2; J*Dj`@`4`g  
public final static int SELECTION = 3; -9Wx;u4]o  
public final static int SHELL = 4; @%q0fj8b  
public final static int QUICK = 5; lR\=] ]7I>  
public final static int IMPROVED_QUICK = 6; HaXlc8  
public final static int MERGE = 7; >:!TfuU^R  
public final static int IMPROVED_MERGE = 8; JEL =,0J  
public final static int HEAP = 9; qOVs9'R  
 O;h]  
public static void sort(int[] data) { (9]`3^_,J  
sort(data, IMPROVED_QUICK); ,R5NKWo  
} <7fF9X  
private static String[] name={ ]1>U@oK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" :A%uXgK<k  
}; TBHIcX  
eN fo8xUG  
private static Sort[] impl=new Sort[]{ b*S :wfw  
new InsertSort(), g^OU+7o  
new BubbleSort(), 8aQ\Yx  
new SelectionSort(), B<i )je!  
new ShellSort(), 8  !]$ljg  
new QuickSort(), \Q7Nz2X  
new ImprovedQuickSort(), R ,-y  
new MergeSort(), 9!zUv:;  
new ImprovedMergeSort(), 2siUpmX  
new HeapSort() Gnop  
}; !:PF |dZ  
FVNxjMm,  
public static String toString(int algorithm){ R| [mp%Q  
return name[algorithm-1]; Y [k%<f  
} 4vq,W_n.hQ  
xwhH_[  
public static void sort(int[] data, int algorithm) { 2qLRcA=R  
impl[algorithm-1].sort(data); SV}q8z\  
} p(in.Xz  
>H?l[*9  
public static interface Sort { 9 =7),`$  
public void sort(int[] data); j38>,9u,  
} 1A"h!;0  
*xR;}%s\  
public static void swap(int[] data, int i, int j) { 4 :RL[;  
int temp = data; y Dg  
data = data[j]; gVjI1{WTK  
data[j] = temp; <yz)iCU?  
} hG .>>  
} xjB2?:/2  
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