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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。 a~TZ9yg+HL  
插入排序: wef^o"aP  
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package org.rut.util.algorithm.support; .qPfi] ty  
nAC#_\  
import org.rut.util.algorithm.SortUtil; 'i-O  
/** n\p\*wb  
* @author treeroot D}U<7=\3H  
* @since 2006-2-2 Bj[/ tQ  
* @version 1.0 6(^9D_"@  
*/ #E@i@'T  
public class InsertSort implements SortUtil.Sort{ YfU#kvE'  
io'Ovhf:  
/* (non-Javadoc) Bx!` UdRn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ABDUp:  
*/ pREY AZh  
public void sort(int[] data) { {4q:4 i  
int temp; Ax*~[$$~%  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); cb,sb^-  
} zQ+t@;g1  
} F7l:*r,O  
} .*7UT~o=CS  
xA E@cwg  
} EZfa0jJD  
ck+rOGv7{Z  
冒泡排序: dkp[?f)x  
X&8,.=kt"  
package org.rut.util.algorithm.support; yE9.]j  
sB/s17ar  
import org.rut.util.algorithm.SortUtil; p>O< "X@  
X1dG'PQ  
/** GP'Y!cl  
* @author treeroot :vT%5CQ  
* @since 2006-2-2 6x{IY  
* @version 1.0 :J-5Q]#  
*/ l!` 0I] }  
public class BubbleSort implements SortUtil.Sort{ * XGBym  
@&B!P3{f  
/* (non-Javadoc) ~l6Y<-!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~{Bi{aK2  
*/ [![ (h %  
public void sort(int[] data) { AwrK82  
int temp; wO%:WL$5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ >MrU^t  
if(data[j] SortUtil.swap(data,j,j-1); v |2j~  
} Cw5K*  
} O3: dOL/C  
} 2H "iN[2A  
} +eXfT*=u5  
0Wm-` ZA  
} <J`xCm K  
elB 8   
选择排序: Zw{tuO7}K  
 RZ%X1$  
package org.rut.util.algorithm.support; A$6b=2hc>  
VAt9JE;#  
import org.rut.util.algorithm.SortUtil; H12@12v  
8E[`H  
/** V,5}hQJ F  
* @author treeroot x&vD,|V!  
* @since 2006-2-2 W2N7  
* @version 1.0 #B9[U} 8  
*/ Th^#H  
public class SelectionSort implements SortUtil.Sort { kc[["w&  
&Qjl|2  
/* N Z`hy>LF^  
* (non-Javadoc) 6Qu*'  
* FM[To  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) RY< b]|  
*/ vDvGT<d  
public void sort(int[] data) { ^W'[l al.  
int temp; FJ"9Hs2  
for (int i = 0; i < data.length; i++) { hspg-|R  
int lowIndex = i; KLW+&.re8  
for (int j = data.length - 1; j > i; j--) { eMzCAO  
if (data[j] < data[lowIndex]) { &N0|tn  
lowIndex = j; n#cN[C9  
} QovC*1'  
} s\!vko'M  
SortUtil.swap(data,i,lowIndex); W F<V2o{k  
} KK$A 4`YoR  
} Ghc0{M<  
![^h<Om  
} Jo<6M'  
0g-ESf``{n  
Shell排序: q(Q9FonU  
1bkUT_  
package org.rut.util.algorithm.support; ,+.# eg  
J}CK|}  
import org.rut.util.algorithm.SortUtil; au* jMcq  
1+($"$ZC&B  
/** Beg5[4@  
* @author treeroot d2sq]Q  
* @since 2006-2-2 )xy6R]_b  
* @version 1.0 y@_?3m7B=  
*/ ~#\#!H7  
public class ShellSort implements SortUtil.Sort{ q2vz#\A?  
He3zV\X[Z  
/* (non-Javadoc) A!yLwkc:5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) s#ZH.z@J  
*/ IOl"Xgn5  
public void sort(int[] data) { 7gcG|kKT  
for(int i=data.length/2;i>2;i/=2){ Mk?I}  
for(int j=0;j insertSort(data,j,i); Xs@ ^D,  
} 5V!XD9P'  
} cyg>h X{U  
insertSort(data,0,1); yTiqG5r  
} 89mre;v`  
)n@3@NV  
/** @un }&URp  
* @param data +to9].O7y  
* @param j 8 GN{*Hg  
* @param i MDt?7c  
*/ c\MDOD%9  
private void insertSort(int[] data, int start, int inc) { Xm'K6JH'  
int temp; tb3fz")UC  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); d.o FlT  
} Ypj)6d  
} bz]O(`  
} |3ETF|)?  
DjvgKy=Jr_  
} B)8Hj).@B  
y/eX(l<{  
快速排序: 0u2uYiE-l  
yVzg<%CR^  
package org.rut.util.algorithm.support; :G/]rDtd  
k|'Mh0G0  
import org.rut.util.algorithm.SortUtil; \;gt&*$-  
pUGfm  
/** C/ VYu-p%  
* @author treeroot cLC7U?-  
* @since 2006-2-2 NI:N W-!  
* @version 1.0 VTfaZ/e.  
*/ :/%xK"  
public class QuickSort implements SortUtil.Sort{ 4{t$M}?N  
2tm-:CPG  
/* (non-Javadoc) ~la04wR28  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >Fk `h=Wd  
*/ T?{9Z  
public void sort(int[] data) { KdsvZim0>  
quickSort(data,0,data.length-1); "e<. n  
} l?_!eA  
private void quickSort(int[] data,int i,int j){ \RyA}P5 S  
int pivotIndex=(i+j)/2; -wMW@:M_  
file://swap Hd`p_?3]  
SortUtil.swap(data,pivotIndex,j); u?Mu*r?  
$OoN/^kv  
int k=partition(data,i-1,j,data[j]); [qMdOY%jx  
SortUtil.swap(data,k,j); ? 4Juw?  
if((k-i)>1) quickSort(data,i,k-1); 2_b'mepV  
if((j-k)>1) quickSort(data,k+1,j); ~(^*?(Z  
K/ m)f#  
} u@u.N2H.%  
/** FD+PD:cQn  
* @param data TFDCo_>o  
* @param i L b;vrh;A  
* @param j wN hR(M7  
* @return rss.F3dK  
*/ 1t=X: ]0j  
private int partition(int[] data, int l, int r,int pivot) { dU^<7 K:S  
do{ ATp  6-  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 4 xzJql  
SortUtil.swap(data,l,r); -8 =u{n  
} q'@Ei4  
while(l SortUtil.swap(data,l,r); L#q9_-(#  
return l; x`vs-Y:P  
} HTyF<K  
~7WXjVZ  
} #ic 2ofI  
]Ja8i%LjOG  
改进后的快速排序: e4%*I8 ^e  
e`M]ZG rr  
package org.rut.util.algorithm.support; 9Ru%E>el-  
Ilu`b|%D  
import org.rut.util.algorithm.SortUtil; ruA+1-<f  
13_~)V  
/** ;Jn0e:x`E  
* @author treeroot -7z y  
* @since 2006-2-2 e - ]c  
* @version 1.0 &dDI*v+  
*/ _Ge^ -7  
public class ImprovedQuickSort implements SortUtil.Sort { _s-HlE?C  
5po' (r|U  
private static int MAX_STACK_SIZE=4096; e0WSHg=6@  
private static int THRESHOLD=10; C!k9JAa$Z  
/* (non-Javadoc) yZ)aKwj%U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +xBK^5/x  
*/ s_Oh >y?Aq  
public void sort(int[] data) { TKu68/\)  
int[] stack=new int[MAX_STACK_SIZE]; KSB_%OI1  
Yj7= T%5  
int top=-1; 6aZt4Lw2\  
int pivot; /,N!g_"Z  
int pivotIndex,l,r; >dvWa-rNUT  
s?x>Yl %  
stack[++top]=0; 'BdmFKy1  
stack[++top]=data.length-1; ^!p<zZ  
+[8Kl=]L  
while(top>0){ Y!1^@;)^  
int j=stack[top--]; Q] yT  
int i=stack[top--]; C6V&R1"s  
X$|TN+Ub  
pivotIndex=(i+j)/2; !eAdm  
pivot=data[pivotIndex]; !:O/|.+Vmf  
={E!8"  
SortUtil.swap(data,pivotIndex,j); 6SBvn%  
^&';\O@)  
file://partition ;.Oh88|k  
l=i-1; Lr}b,  
r=j; mn; 7o~4  
do{ DkF2R @  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); oD#< ?h)(  
SortUtil.swap(data,l,r); }#W`<,*rL.  
} n]C%(v!u3  
while(l SortUtil.swap(data,l,r); =Q8H]F  
SortUtil.swap(data,l,j); %6IlE.*,  
<\d|=>;  
if((l-i)>THRESHOLD){ $,e?X}4  
stack[++top]=i; )y/DGSd  
stack[++top]=l-1; PVD ~W)0m*  
} ?%xhe  
if((j-l)>THRESHOLD){ teOBsFy/I  
stack[++top]=l+1; "H="Ip!s  
stack[++top]=j; x !:9c<  
} !` M;#  
3q|cZQK!1  
} >4|c7z4  
file://new InsertSort().sort(data); lKV\1(`  
insertSort(data); k BiBXRt  
} 29iIG 'N  
/** gF,[u  
* @param data !&a;P,_Fb  
*/ yXTK(<'  
private void insertSort(int[] data) { -q&7J' N  
int temp; U%^eIXV|  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); I)XOAf$6  
} ;]&~D +XH  
} 2l)9Lz=;L  
} 7edPH3  
Od!F: <  
} eN]>l  
?bt`fzX{l  
归并排序: 5rfH;`  
j FPU zB"  
package org.rut.util.algorithm.support; 4P4 Fo1  
O@r.>  
import org.rut.util.algorithm.SortUtil; ckf<N9  
RrO0uadmn  
/** 5i4V5N>3  
* @author treeroot 77xq/c[)  
* @since 2006-2-2 p]h*6nH>~  
* @version 1.0 `*" H/QG  
*/ 9QH9gdiw  
public class MergeSort implements SortUtil.Sort{ 0eqi1;$b]  
xBL$]>  
/* (non-Javadoc) b'7z DZI]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8Q^6ibE  
*/ *,W!FxJ  
public void sort(int[] data) { c/<Sa|'  
int[] temp=new int[data.length]; 9|N" @0<B  
mergeSort(data,temp,0,data.length-1); R81{<q'%X  
} 5@+4  
crJ7pe9  
private void mergeSort(int[] data,int[] temp,int l,int r){ f2O*8^^Y{Q  
int mid=(l+r)/2; qY$*#*Q  
if(l==r) return ; ?E+:]j_  
mergeSort(data,temp,l,mid); O}K_l1  
mergeSort(data,temp,mid+1,r); -t@y\vZF,  
for(int i=l;i<=r;i++){ Q%& _On  
temp=data; WxVn&c\  
} ':4}O#  
int i1=l; &o*s !u  
int i2=mid+1; &c!j`86y*  
for(int cur=l;cur<=r;cur++){ @K$VV^wp  
if(i1==mid+1) %@lV-(5q  
data[cur]=temp[i2++]; 29Gwv  
else if(i2>r) %XP_\lu]  
data[cur]=temp[i1++]; G$;] ?g  
else if(temp[i1] data[cur]=temp[i1++]; %RQC9!  
else f0 uUbJ5  
data[cur]=temp[i2++]; eVw\v#gd  
} [j)\v^m  
} ]#Vo}CVP  
+Lm3vj_ N  
} lAdDu  
1B)Y;hg6&  
改进后的归并排序: TL},Unq  
PIZ C;K4|  
package org.rut.util.algorithm.support; ~L%Pz0Gg  
M}Nb|V09  
import org.rut.util.algorithm.SortUtil; 9 wO/?   
OUEI~b1  
/** E?30J3S  
* @author treeroot 1Pk mg%+  
* @since 2006-2-2 iNod</+"K  
* @version 1.0 r0\cc6  
*/ ?EI'^xg  
public class ImprovedMergeSort implements SortUtil.Sort { op hH9D  
de> ?*%<  
private static final int THRESHOLD = 10; =X-^YG3x  
P?9nTG  
/* \Fj5v$J-  
* (non-Javadoc) <y@,3DD3A9  
* p91`<>Iw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |@ikx{W  
*/ <^lJr82  
public void sort(int[] data) { }3v'Cp0L  
int[] temp=new int[data.length]; $[Tt#CJ w  
mergeSort(data,temp,0,data.length-1); zRwb"  
} `]*%:NZP@  
J=I:T2bV&s  
private void mergeSort(int[] data, int[] temp, int l, int r) { ic%?uWN  
int i, j, k; .6>  hD1'  
int mid = (l + r) / 2; i 8l./Yt/  
if (l == r) XB0a dp  
return; &|v{#,ymeb  
if ((mid - l) >= THRESHOLD) h ?uqLsRl  
mergeSort(data, temp, l, mid); 06 QU  
else 5Z/yhF.{  
insertSort(data, l, mid - l + 1); 5]jx5!N  
if ((r - mid) > THRESHOLD) )O,wRd>5  
mergeSort(data, temp, mid + 1, r); 2Y400  
else >(hSW~i~  
insertSort(data, mid + 1, r - mid); N>+P WE$  
S8 :"<B)  
for (i = l; i <= mid; i++) { &J8 Z@^  
temp = data; hf;S]8|F  
} V,V*30K5  
for (j = 1; j <= r - mid; j++) { 6}ce1|mkg/  
temp[r - j + 1] = data[j + mid]; }$o*  
} IUOxGJ|rO  
int a = temp[l]; B\\6#  
int b = temp[r]; Lp_$?MCD.  
for (i = l, j = r, k = l; k <= r; k++) { `/z_rqJ0CL  
if (a < b) { k@#5$Ejc2  
data[k] = temp[i++]; ,zQo {.  
a = temp; UQ/qBbn  
} else {  s[3e=N  
data[k] = temp[j--]; y8G&Wg aCi  
b = temp[j]; FY$fV"s  
} gX[|;IZ0o  
} )FRM_$t  
} bF*NWm$Lf  
h@=7R  
/** wZ#Rlv,3Wa  
* @param data ~A6"sb=  
* @param l {J (R  
* @param i MR`:5e  
*/ 1%%'6cWWu  
private void insertSort(int[] data, int start, int len) { WzjL-a(  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); yQ9ZhdQS  
} Mtm/}I  
} ^$!987"  
} W4(v6>5l  
} sONBQ9  
Bs[nV}c>>  
堆排序: wu A^'T  
)l_@t(_  
package org.rut.util.algorithm.support; +noZ<KFW "  
S=' wJ@?;  
import org.rut.util.algorithm.SortUtil; Ht#@'x  
Cezh l  
/** PocYFhWQ`  
* @author treeroot qD#VbvRc9+  
* @since 2006-2-2 bp#:UUO%S  
* @version 1.0 2R]&v;A  
*/ J{`eLmTu  
public class HeapSort implements SortUtil.Sort{ Y2C9(Zk U  
X APYpBgm  
/* (non-Javadoc) ~4\,&HH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) VU|;:  
*/ Wqra8u#  
public void sort(int[] data) { oBA`|yW{U  
MaxHeap h=new MaxHeap(); Cp#)wxi6[y  
h.init(data); A3HF,EG  
for(int i=0;i h.remove(); {XgnZ`*  
System.arraycopy(h.queue,1,data,0,data.length); 5o#Yt  
} FW8-'~  
rz%<AF Z  
private static class MaxHeap{ Rs*v m  
$<|ocUC7  
void init(int[] data){ Q.+|xwz  
this.queue=new int[data.length+1]; [$\z'}  
for(int i=0;i queue[++size]=data; \?DR s  
fixUp(size); t|V0x3X  
} T$KF< =  
} C)Jn[/BD  
k;I  &.H  
private int size=0; EATu KLP\  
3$VxRz)  
private int[] queue; 3LDsxE=N:q  
Gs dnf 7  
public int get() { ;Wc4qJ.@  
return queue[1]; (vc|7DX M  
}  iEIg:  
8!mc@$Z  
public void remove() { I;7nb4]AmF  
SortUtil.swap(queue,1,size--); 1tB[_$s  
fixDown(1); BByCM Y  
} a{SBCy  
file://fixdown B&Y_2)v  
private void fixDown(int k) { 2 -Xdoxw  
int j; #eK=  
while ((j = k << 1) <= size) { ow6*Xr8eQ  
if (j < size %26amp;%26amp; queue[j] j++; ]JE TeZ^/  
if (queue[k]>queue[j]) file://不用交换 Z{R[Wx  
break; |>2FRPK  
SortUtil.swap(queue,j,k); %+-C3\'  
k = j; {f/]5x(_  
} {_#yz\j  
} hXn3,3f3oZ  
private void fixUp(int k) { YE}s  
while (k > 1) { w!SkWS b,~  
int j = k >> 1; l&$$w!n0w  
if (queue[j]>queue[k]) @ O>&5gB1u  
break; 8' K0L(3[  
SortUtil.swap(queue,j,k); ;n6b%,s  
k = j; -x`G2i  
} 1mH%H*#  
} R}:KE&tq  
!}KqB8;  
} ~u87H?  
[zkikZy  
} o.-C|IXG  
}-@4vl x$  
SortUtil: ' GG=Ebt  
Ad$n4Ze  
package org.rut.util.algorithm; is?2DcSl5  
gRJfX %*F  
import org.rut.util.algorithm.support.BubbleSort; S/[E 8T"  
import org.rut.util.algorithm.support.HeapSort; *[+)7  
import org.rut.util.algorithm.support.ImprovedMergeSort; %Sk@GNI_  
import org.rut.util.algorithm.support.ImprovedQuickSort; 9\;|x  
import org.rut.util.algorithm.support.InsertSort; 7^*"O&y_al  
import org.rut.util.algorithm.support.MergeSort; awewYf$li  
import org.rut.util.algorithm.support.QuickSort; ?=;qK{)37  
import org.rut.util.algorithm.support.SelectionSort; ^Q+i=y{W  
import org.rut.util.algorithm.support.ShellSort; m~#%Q?_ %  
J#2!ZQE 3  
/** lb*8G  
* @author treeroot ww k PF  
* @since 2006-2-2 KvPX=/&Zu  
* @version 1.0 Zm ogM7B  
*/ BV`-=wRC  
public class SortUtil { a4i:|   
public final static int INSERT = 1; 5S{7En~zUE  
public final static int BUBBLE = 2; !ZRs;UZ>o  
public final static int SELECTION = 3; o>/O++7Ra  
public final static int SHELL = 4; c`*TPqw(B[  
public final static int QUICK = 5; ,m=4@ofX  
public final static int IMPROVED_QUICK = 6; -fI@])$9J  
public final static int MERGE = 7;  j2l55@  
public final static int IMPROVED_MERGE = 8; 8qEK+yi,  
public final static int HEAP = 9; ^!8P<y  
_c$9eAe  
public static void sort(int[] data) { B[4pX +f  
sort(data, IMPROVED_QUICK); {<>K]P~wD  
} sOCs13A"  
private static String[] name={ WY:&ugGx  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" llV3ka^!  
}; Z?Hs@j  
G~7 i@Zs  
private static Sort[] impl=new Sort[]{ gb=/#G0R  
new InsertSort(), 6 15s5ZA  
new BubbleSort(), ] b9-k  
new SelectionSort(), aVL=K  
new ShellSort(), %M|,b!eF  
new QuickSort(), >>i@r@  
new ImprovedQuickSort(), 3bZIYF2@  
new MergeSort(), ORXm&z)  
new ImprovedMergeSort(), wa=uUM_4u^  
new HeapSort() 3@Z#.FV~C[  
}; #@@Mxr'F  
_p-t<ytnh  
public static String toString(int algorithm){ vsWHk7 9  
return name[algorithm-1]; h N2:d1f0  
} wkqX^i7ls  
S [h];eM  
public static void sort(int[] data, int algorithm) { %?^6).aEK  
impl[algorithm-1].sort(data); W!!S!JF  
} obrl#(\P  
vDl- "!G1  
public static interface Sort {  Uo12gIX  
public void sort(int[] data); <GHYt#GIZ+  
} [[d(jV=*  
@~c6qh  
public static void swap(int[] data, int i, int j) { ]ul$*  
int temp = data; x_Jwd^`t!  
data = data[j]; 1i:|3PA~  
data[j] = temp; %CUGm$nH  
} 'I;!pUfVp  
} km^^T_ M/  
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