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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。 ?8fa/e  
插入排序: 0Pu$1Fp  
q5YgKz?IC  
package org.rut.util.algorithm.support; { :'#Ts<  
`$SX%AZA  
import org.rut.util.algorithm.SortUtil; #g\O*oYaw  
/** pJ"Wg@+  
* @author treeroot gI6./;;x  
* @since 2006-2-2 w_q{C>- cR  
* @version 1.0 I0.{OJ-  
*/ _C DUUr  
public class InsertSort implements SortUtil.Sort{ 3N[Rrxe2  
`92P~Y~`W  
/* (non-Javadoc) c_4K  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fy 1- >~  
*/ &+5ij;AD  
public void sort(int[] data) { Q Yg V[\&  
int temp; b#nI#!p'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); lrjVD(R=g  
} :%-w/QwTR  
} ~pT1,1  
} }el7@Gv  
bWgRGJqt  
} ${)oi:K@:  
5pT8 }?7  
冒泡排序: p'`?CJq8  
$ \+x7"pI  
package org.rut.util.algorithm.support; +70x0z2  
h+R26lI1x  
import org.rut.util.algorithm.SortUtil; Xf#+^cQ  
A?bqDy  
/** 9.%t9RM^  
* @author treeroot i E?yvtr8  
* @since 2006-2-2 ds2%i  
* @version 1.0 >PzZt8e  
*/ g=/!Ry=  
public class BubbleSort implements SortUtil.Sort{ "Zfm4Nx "  
M5a&eO  
/* (non-Javadoc) @O`T|7v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uUiS:Tp]  
*/ 9=q&SG  
public void sort(int[] data) { [l/!&6  
int temp; jF@BWPtF=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ JZdRAL2#v  
if(data[j] SortUtil.swap(data,j,j-1); efNscgi  
} PN3 Qxi4F  
} >0z`H|;  
} h,?%,GI  
} OqWm5(u&S  
YkFAu8b>  
} C*}PL  
jddhX]>I  
选择排序: k;B[wEW@  
]$u C~b   
package org.rut.util.algorithm.support; + ZK U2N*  
jOU99X\0  
import org.rut.util.algorithm.SortUtil; ;X^#$*=Q  
@eM$S5&n$  
/** zO2=o5nF.  
* @author treeroot %JHv2[r^P  
* @since 2006-2-2 @j!(at4B  
* @version 1.0 4fIjVx  
*/ >8ryA$  
public class SelectionSort implements SortUtil.Sort { 'QQq0.  
xG;;ykh.]  
/* J'ZC5Xr  
* (non-Javadoc) #UE}JR3g  
* 'ieTt_1.G  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !Rc %  
*/ cQ]c!G|a4  
public void sort(int[] data) { wz)s  
int temp; EDz;6Z*4N  
for (int i = 0; i < data.length; i++) { -u(,*9]cJ*  
int lowIndex = i; Lk!m1J5  
for (int j = data.length - 1; j > i; j--) { \FUMfo^  
if (data[j] < data[lowIndex]) { 6J\ 2 =c`  
lowIndex = j; }L(ZLt8Q  
} Y0Tad?iC  
} a4.w2GR  
SortUtil.swap(data,i,lowIndex); n"`V| UTHP  
} gD51N()s,  
} 5S8>y7knQ  
 H~TuQ  
} L2p?] :-  
064k;|>D  
Shell排序: oNIYO*[  
< =~=IZ)  
package org.rut.util.algorithm.support; I-}ms  
U3C"o|   
import org.rut.util.algorithm.SortUtil; QJj='+R>  
G pI4QzR  
/** cxQAp  
* @author treeroot B~^*@5#0|  
* @since 2006-2-2 /{:XYeX  
* @version 1.0 %Z4*;VwQ  
*/ 7~FHn'xt  
public class ShellSort implements SortUtil.Sort{ 4#}aLP  
er5!n e  
/* (non-Javadoc) UOFb.FRP>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _  xym  
*/ n807?FORB  
public void sort(int[] data) { IIih9I`IR  
for(int i=data.length/2;i>2;i/=2){ uJCp  
for(int j=0;j insertSort(data,j,i); "AZ|u#0P  
} !qp$Xtf+  
} "0uM%*2  
insertSort(data,0,1); AmHj\NX$  
} (~eS$8>.  
6lCpf1>6@  
/** jC_'6sc`  
* @param data _}Qtx/Cg  
* @param j 0VcHz$ 6  
* @param i "b~C/-W I  
*/ umWs8-'Uw  
private void insertSort(int[] data, int start, int inc) { ">.tPn  
int temp; mW4Cc1*  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); YnuY/zDF  
} ,@c1X:  
} *1Bq>h:  
} t VO}{[U}  
z &X l  
} $1 "gFg  
L /:^;j`c  
快速排序: \#(1IC`as  
SGSyO0O  
package org.rut.util.algorithm.support; 0uIY6e0E  
Y ~g\peG7  
import org.rut.util.algorithm.SortUtil; =]]1x_GB  
J{^md0l  
/** Mib .,J~  
* @author treeroot eM_;rMCr}  
* @since 2006-2-2 [:.wCG5  
* @version 1.0 |,p"<a!+{w  
*/ WM`3QJb  
public class QuickSort implements SortUtil.Sort{ COsmVQ.  
d_d&su E  
/* (non-Javadoc) =TDKU  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }< H>9iJ:  
*/ jQ;/=9  
public void sort(int[] data) { -'g> i  
quickSort(data,0,data.length-1); w") G:K  
} )-_^vB  
private void quickSort(int[] data,int i,int j){ ~;3#MAG  
int pivotIndex=(i+j)/2; IK\~0L;ozE  
file://swap =X?fA,  
SortUtil.swap(data,pivotIndex,j); U!o7Nw@ z  
;.Bz'Q  
int k=partition(data,i-1,j,data[j]); ns%gb!FBJX  
SortUtil.swap(data,k,j); :-}K:ucaj  
if((k-i)>1) quickSort(data,i,k-1); b"A,q  
if((j-k)>1) quickSort(data,k+1,j); 0t? o6 e  
o3dqsQE%  
} )][U6e  
/** Ny2 Z <TW  
* @param data _i {Y0d+  
* @param i zawu(3?~)5  
* @param j  Rpgg :  
* @return !nSa4U,$w<  
*/ 8j;Un]  
private int partition(int[] data, int l, int r,int pivot) { e?.j8 Q ~  
do{ X#ttDB  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 3T8d?%.l  
SortUtil.swap(data,l,r); f-enF)z  
} 84QOW|1  
while(l SortUtil.swap(data,l,r); a$|U4Eqo  
return l; k}v`UiGM  
} >^~^#MT  
@w8} ]S  
} VIz(@  
$U*eq [  
改进后的快速排序: llP V{  
_K9`o^g%PJ  
package org.rut.util.algorithm.support; ^AH[]sE_  
gLX<> |)*  
import org.rut.util.algorithm.SortUtil; 4HGT gS  
i8V\x>9  
/** HpEd$+Mz  
* @author treeroot L]H'$~xx*  
* @since 2006-2-2 ;&&<zWq3h  
* @version 1.0 KMwV;r  
*/ P)`^rJ6  
public class ImprovedQuickSort implements SortUtil.Sort { FuiR\"Ww  
u9"yU:1keb  
private static int MAX_STACK_SIZE=4096; rS_G;}Zr  
private static int THRESHOLD=10; 2{&A)Z!I  
/* (non-Javadoc) rP4T;Clout  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Nu6NyYs  
*/ U`q keNd  
public void sort(int[] data) { d5l42^Z  
int[] stack=new int[MAX_STACK_SIZE]; ZU`9]7"87B  
Ax&!Nz+?  
int top=-1; gS~H1Ro  
int pivot; !G-+O#W`  
int pivotIndex,l,r; zG#5lzIu,  
F,Q;sq  
stack[++top]=0; 3P6O]x<-?  
stack[++top]=data.length-1; %3a-@!|1<  
>Bb X:  
while(top>0){ 3[ [oAp  
int j=stack[top--]; -x+3nb|.  
int i=stack[top--]; t,7%| {  
w w^\_KGu7  
pivotIndex=(i+j)/2; hN2A%ds*(j  
pivot=data[pivotIndex]; }qiZ%cT.G  
 pX_#Y)5  
SortUtil.swap(data,pivotIndex,j); @wcF#?J  
309 pl  
file://partition O6hzOyNX@  
l=i-1; /xk7Z q  
r=j; pJ] Ix *M  
do{ 0(7 IsG=t  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >}V?GK36  
SortUtil.swap(data,l,r); tVRN3fJH  
} `3F#k[IR  
while(l SortUtil.swap(data,l,r); /Sj~lHh  
SortUtil.swap(data,l,j); +]%S}<R  
T'5{p  
if((l-i)>THRESHOLD){ |Mq+QDTTw~  
stack[++top]=i; G\gjCp?!  
stack[++top]=l-1; TN0KS]^A3  
} O=2|'L'h!  
if((j-l)>THRESHOLD){ I_<VGU k  
stack[++top]=l+1; 6j(/uF4!#  
stack[++top]=j; vUpAW[[  
} g0grfGo2p  
m;dwt1'Zw  
} >R F|Q  
file://new InsertSort().sort(data); 2$Mnwxfk  
insertSort(data); .gJ2P?  
} mw 28E\U  
/** I`0-q?l  
* @param data XR+ SjCA  
*/ 0VNLhM(LM  
private void insertSort(int[] data) { `*8}q!.  
int temp; [7@ g*!+d  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); G}pFy0W\S  
} {U=J>#@G  
} Wzl/ @CPM  
} |q w0:c=7!  
#3rS{4[  
} V9oBSP'kt  
GY]P(NU  
归并排序: RM|J |R  
tY)L^.*7  
package org.rut.util.algorithm.support; kZw"a*6  
+5zXbfO  
import org.rut.util.algorithm.SortUtil; gs'M^|e)  
-%` ~3*L  
/** w jkh*Y  
* @author treeroot << >+z5D+  
* @since 2006-2-2 /w?e(v<  
* @version 1.0 KOy{?  
*/ lMY\8eobcB  
public class MergeSort implements SortUtil.Sort{ '3>;8(s l  
XKjrS 9:  
/* (non-Javadoc) Ljy797{f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) K{P-+(  
*/ ,clbD4  
public void sort(int[] data) { LIID(s!bX  
int[] temp=new int[data.length];  ~71U s  
mergeSort(data,temp,0,data.length-1); ; JkSZs3  
} Ce}`z L  
8 Rj5~+5  
private void mergeSort(int[] data,int[] temp,int l,int r){ ^@^8iZ  
int mid=(l+r)/2; ;\RV C 7  
if(l==r) return ; c[Fc3  
mergeSort(data,temp,l,mid); _KH91$iW8m  
mergeSort(data,temp,mid+1,r); ,R{&x7  
for(int i=l;i<=r;i++){ Sb`[+i' `  
temp=data; X"{%,]sb G  
} :'p)xw4K|  
int i1=l; M/<ypJ  
int i2=mid+1; 8 1Kf X {|  
for(int cur=l;cur<=r;cur++){ dtR"5TL<~}  
if(i1==mid+1) ['mpxtG  
data[cur]=temp[i2++]; k)b{ UFRW  
else if(i2>r) 7h 54j  
data[cur]=temp[i1++]; W[&nQW$E  
else if(temp[i1] data[cur]=temp[i1++]; <&E}db  
else =2p?_.|'  
data[cur]=temp[i2++]; (kxS0 ]=  
} o,rF15  
} KR?;7*qF  
!PA:#]J  
} 6F (z6_<  
0>|q[SC  
改进后的归并排序: ^EUR#~b5iy  
/!H24[tnk1  
package org.rut.util.algorithm.support; rbd0`J9fq  
^Hn}\5  
import org.rut.util.algorithm.SortUtil; 'NtI bS  
`jE[Xt"@  
/** .Pm5nS  
* @author treeroot UXct+l  
* @since 2006-2-2 .\XRkr'-  
* @version 1.0 ]K(a32VCH  
*/ ,j%\3g`  
public class ImprovedMergeSort implements SortUtil.Sort { QEJu.o  
oZ%uq78#[%  
private static final int THRESHOLD = 10; &hWELZe0vv  
b-& rMML  
/* iE'_x$i  
* (non-Javadoc) lju5+0BSb  
* 2y!n c%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) CF;Gy L1M  
*/ r)t[QoD1  
public void sort(int[] data) { wiN0|h>,  
int[] temp=new int[data.length]; >j?5?J"  
mergeSort(data,temp,0,data.length-1); ;dzy 5o3  
} !BoGSI  
1`8s "T  
private void mergeSort(int[] data, int[] temp, int l, int r) { I1 ]YT  
int i, j, k; d4b!  r  
int mid = (l + r) / 2; 7\UHADr  
if (l == r) $>/d)o  
return; H(^Eh v>  
if ((mid - l) >= THRESHOLD) _`?0w#> 0  
mergeSort(data, temp, l, mid); :qo[@x{  
else tiZ H;t';<  
insertSort(data, l, mid - l + 1); 'Dfs&sm  
if ((r - mid) > THRESHOLD) p\[!=ZXFr\  
mergeSort(data, temp, mid + 1, r); 5HbHJ.|r  
else &y_t,8>5  
insertSort(data, mid + 1, r - mid); }U7IMONU  
b~.$1oZ  
for (i = l; i <= mid; i++) { ) 9Q+07  
temp = data; ,kJ'_mq  
} ,l&?%H9q  
for (j = 1; j <= r - mid; j++) { =CQfs6np:N  
temp[r - j + 1] = data[j + mid]; VD.TosVeWo  
} MXSD8]je  
int a = temp[l]; g (&cq  
int b = temp[r]; H>+/k-n-  
for (i = l, j = r, k = l; k <= r; k++) { 8#QT[H 4F  
if (a < b) { sV"tN2W@  
data[k] = temp[i++]; %wbdg&^  
a = temp; u(Mbp$R' ?  
} else { ,ojJ;w5D  
data[k] = temp[j--]; ] G["TX,  
b = temp[j]; 5RLO}Vn]  
} Szz j9K  
} ;<i u*a  
} 1sXCu|\q  
"==c  
/** "W5MZ  
* @param data  hE:~~ox  
* @param l O<vBuD2  
* @param i 9':Ipf&x  
*/ z_'^=9m  
private void insertSort(int[] data, int start, int len) { H r:*p6  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ;W{z"L;nX  
} 5j`sJvq  
} 8$-MUF,  
} 6Jgl"Jw8  
} j"jssbu}  
s~,!E  
堆排序: s $(%]~P  
S\Z*7j3;M  
package org.rut.util.algorithm.support; S[L@8z.Sj  
4<s;xSCL  
import org.rut.util.algorithm.SortUtil; \gP?uJ  
,.Ofv):=  
/** E]q>ggeNH  
* @author treeroot Ls2OnL9  
* @since 2006-2-2 7O)ATb#up  
* @version 1.0 }6l:'nW  
*/ Z*Ffdh>*:&  
public class HeapSort implements SortUtil.Sort{ :+ YHj )mN  
TD\TVK3P  
/* (non-Javadoc) g(P7CX+y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /,I?"&FWc  
*/ u4lM>(3Y}  
public void sort(int[] data) { ^fKKsfIf  
MaxHeap h=new MaxHeap(); UW":&`i  
h.init(data); H'S~GP4D  
for(int i=0;i h.remove(); m& AbH&;  
System.arraycopy(h.queue,1,data,0,data.length); ok--Jyhv#  
} -F`gRAr-  
bN?*p($/  
private static class MaxHeap{ L@MCB-@V  
lsV>sW4]Z  
void init(int[] data){ Gh_5$@ hF  
this.queue=new int[data.length+1]; t_^cqEr  
for(int i=0;i queue[++size]=data;  '0f!o&?g  
fixUp(size); J|xXo  
} 7_Vd%<:  
} 0of:tZU  
23LG)or.JC  
private int size=0; K;/f?3q  
BSS4}qyS  
private int[] queue; 0uKm)t/  
a/E(GQ,,  
public int get() { CV |Ae [  
return queue[1]; ~a=]w#-KD  
} AYNz {9  
<!dZ=9^^ 1  
public void remove() { OY"BaSEOw}  
SortUtil.swap(queue,1,size--); q|YnNk>1  
fixDown(1); Wr Wz+5M8  
} R]od/u/$  
file://fixdown v2|zIZ  
private void fixDown(int k) { v*excl~  
int j; KXTk.\c  
while ((j = k << 1) <= size) { L^^f.w#m  
if (j < size %26amp;%26amp; queue[j] j++; CEk [&39"  
if (queue[k]>queue[j]) file://不用交换 Iv7BIK^0  
break;  V13^SVM  
SortUtil.swap(queue,j,k); ~i-n_7+  
k = j; 0Wd5s{S  
} \sGJs8#v][  
} %.[AZ>  
private void fixUp(int k) { \ bNDeA&l  
while (k > 1) { z V $Z@o  
int j = k >> 1; @ &c@  
if (queue[j]>queue[k]) !/2kJOSp  
break; (N}\Wft%  
SortUtil.swap(queue,j,k); 2P57C;N8|  
k = j; 7TX$  
} Q-_;.xy#4  
} a&)$s;  
!G;BYr>X  
} Jv2V@6a(  
%Y`)ZKh  
} ADP[KZO$ 4  
ke*&*mx"L  
SortUtil: ygm=q^bV]s  
-}qay@cDt  
package org.rut.util.algorithm; '&/Y}]  
8QFRX'i  
import org.rut.util.algorithm.support.BubbleSort; Rv*x'w ==  
import org.rut.util.algorithm.support.HeapSort; #!z'R20PH  
import org.rut.util.algorithm.support.ImprovedMergeSort; \XY2s&"  
import org.rut.util.algorithm.support.ImprovedQuickSort; "gpfD-BX  
import org.rut.util.algorithm.support.InsertSort; N*w{NB7L  
import org.rut.util.algorithm.support.MergeSort; A}!D&s&UH  
import org.rut.util.algorithm.support.QuickSort; i/N68  
import org.rut.util.algorithm.support.SelectionSort; H_JT"~_2  
import org.rut.util.algorithm.support.ShellSort; }LBrk0]  
UL8"{-`_\  
/** ue *mTMN  
* @author treeroot pv|D{39Hs  
* @since 2006-2-2 0/+TQD!L  
* @version 1.0 /4BYH?*  
*/ %'F[(VB   
public class SortUtil { Se/]J<]  
public final static int INSERT = 1; !Je!;mEvI  
public final static int BUBBLE = 2; q[Y* .%~  
public final static int SELECTION = 3; YWhS<}^  
public final static int SHELL = 4; bir tA{q  
public final static int QUICK = 5; )Z?\9'6e4  
public final static int IMPROVED_QUICK = 6; imS&N.*3m  
public final static int MERGE = 7; MM+nE_9lV  
public final static int IMPROVED_MERGE = 8; [Az^i>iH  
public final static int HEAP = 9; nRZ T~S4  
b|Ed@C  
public static void sort(int[] data) { p t{/|P  
sort(data, IMPROVED_QUICK); 5geZ6]|  
} q|;+Wp?  
private static String[] name={ \4q1<j  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e3&.RrA  
}; C"}]PW  
/Bnh%6#ab  
private static Sort[] impl=new Sort[]{ IW|1)8d  
new InsertSort(), yw?UA  
new BubbleSort(), nG5:H.)  
new SelectionSort(), ]\R%@FCYc  
new ShellSort(), 9%Ftln6  
new QuickSort(), rFv=j :8  
new ImprovedQuickSort(), NE$=R"<Gv  
new MergeSort(), 7^8<[8  
new ImprovedMergeSort(), -,xsUw4  
new HeapSort() My >{;n=}  
}; r+l3J>:K  
q(@hYp#O"3  
public static String toString(int algorithm){ i3y>@$fRL\  
return name[algorithm-1]; 'v3> "b  
} ZYW=#df R  
c/}bx52>u  
public static void sort(int[] data, int algorithm) { *}i.,4+y   
impl[algorithm-1].sort(data);  F_%&,"$  
} XAr YmO  
r`'n3#O*  
public static interface Sort { [[:wSAO>6'  
public void sort(int[] data); b _0Xi  
} I%G6V a@  
FZtIC77X5  
public static void swap(int[] data, int i, int j) { \.dvRI'  
int temp = data; ~); 7D'[  
data = data[j]; yX8$LOjE  
data[j] = temp; 5SY(:!  
} VJ(#FA2  
} w+owx(mN@  
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