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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。 5N[Y2  
插入排序: %ZZ}TUI W  
3Y r   
package org.rut.util.algorithm.support; e~}+.B0  
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import org.rut.util.algorithm.SortUtil; ?s_q|d_  
/** Fm2t:,=  
* @author treeroot f.8L<<5 c  
* @since 2006-2-2 ,Y&kW'2  
* @version 1.0 =lffr?#&B  
*/ c''!&;[!  
public class InsertSort implements SortUtil.Sort{ D1Fc7! TV  
J}.p6E~j  
/* (non-Javadoc) #:{u1sq;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aH >.o 1;  
*/ ?pVODnP k  
public void sort(int[] data) { > h:~*g  
int temp; MZ+"Arzb  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); T$q]iSgu  
} $4eogI7N>w  
} f< '~K  
} :{Y,Nsa  
xAoozDj  
} )_&<u\cm L  
&2Y>yFB ,  
冒泡排序: =F:d#j>F  
8m6L\Z&  
package org.rut.util.algorithm.support; K1C#  
CBF>157B  
import org.rut.util.algorithm.SortUtil; >o[T#U  
f^]2qoN  
/** bGSgph  
* @author treeroot U 26Iz  
* @since 2006-2-2 /Ia#udkNMp  
* @version 1.0 U3Dy:K[  
*/ 3*'!,gK~[  
public class BubbleSort implements SortUtil.Sort{ HWHGxg['r  
}LE/{]A  
/* (non-Javadoc) 'Y-c*q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )qxL@w.  
*/ c8u&ev.U  
public void sort(int[] data) { ",K6zALJ  
int temp; w)}[)}T!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ %iX +"  
if(data[j] SortUtil.swap(data,j,j-1); 8 {QvB"w  
} =6%0pu]0  
} c5]1aFKz  
} PVvG  
} &-{4JSII  
<ZnAPh  
} t<`BaU  
?HBc7$nW  
选择排序: ?Jx8z`(  
GCIm_ n  
package org.rut.util.algorithm.support; fa6L+wt4O  
_H;ObTiB  
import org.rut.util.algorithm.SortUtil; &K\di*kN  
R!-RSkB  
/** <4VUzgX2  
* @author treeroot 3 =S.-  
* @since 2006-2-2 f:=?"MX7  
* @version 1.0 muY4:F.C(  
*/ mH8"k+k  
public class SelectionSort implements SortUtil.Sort { =?/J.[)<*  
\?}ZXKuJj  
/* ABx0IdOcI  
* (non-Javadoc) {Ji[d.cY  
* kdv>QZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) UyvFR@  
*/ <7)@Jds\  
public void sort(int[] data) { /FQumqbnt  
int temp; gsZCWT  
for (int i = 0; i < data.length; i++) { he!e~5<@y  
int lowIndex = i; ]pFYAe ?  
for (int j = data.length - 1; j > i; j--) { u9?85  
if (data[j] < data[lowIndex]) { 7o ;}"Y1  
lowIndex = j; uODpIxN  
} J \G8 g,@  
} N7[i443a  
SortUtil.swap(data,i,lowIndex); J\Se wg9  
} |}#Rn`*2y  
} WJhI6lu  
f^',J@9@  
} q3 9 RD  
"Z,'NL>&  
Shell排序: O!;!amvz  
44cyD _(  
package org.rut.util.algorithm.support; z*kn.sW  
92S<TAdPP  
import org.rut.util.algorithm.SortUtil; 5Rc 5/m  
*}LYMrP  
/** #LcF;1o%o2  
* @author treeroot 2!l)% F`  
* @since 2006-2-2 /#.6IV(  
* @version 1.0 =0O`VSb  
*/ (B[0BjU  
public class ShellSort implements SortUtil.Sort{ {@({po  
]ul]L R%.  
/* (non-Javadoc) aP2  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |>d5 6  
*/ 5B"j\TwQ  
public void sort(int[] data) {  O'_D*?  
for(int i=data.length/2;i>2;i/=2){ 8Kv=Zp,?`  
for(int j=0;j insertSort(data,j,i); |2^cPnv?G&  
} U@i+XZc"S  
} w+[r$+z!k  
insertSort(data,0,1); I>fEwMk~  
} @m#7E4 +  
02bv0  
/** o-49o5:1  
* @param data ?7(`2=J  
* @param j m~%IHWO'  
* @param i {Pdy KgM  
*/ J6=*F;x6E  
private void insertSort(int[] data, int start, int inc) { F~&bgl[YZ  
int temp; N^:)U"9*e  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); bW[Y:}Hk~  
} !,|yrB&`S  
} 29}(l#S}m  
} qm8[ ^jO&  
\_0nH`  
} td%EbxJK]`  
V"k*PLt  
快速排序: U^:+J-z{  
CH!Lf,G  
package org.rut.util.algorithm.support; DzH1q r  
b,~6cDU  
import org.rut.util.algorithm.SortUtil; = gOq >`  
c]#F^(-A`  
/** ub7|'+5  
* @author treeroot /+iU1m'(  
* @since 2006-2-2 Uz[#t1*  
* @version 1.0 4E<iIA\x  
*/ 6 [w_ /X"  
public class QuickSort implements SortUtil.Sort{ D O#4E<]5  
I6X_DPY  
/* (non-Javadoc) %^kBcId  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |3QKxS0  
*/ A^*0{F?,)  
public void sort(int[] data) { &Z#g/Hc  
quickSort(data,0,data.length-1); 4f'1g1@$  
} 'z>|N{-xG  
private void quickSort(int[] data,int i,int j){ FK{Vnj0  
int pivotIndex=(i+j)/2; R~PD[.\u  
file://swap yC(xi"!  
SortUtil.swap(data,pivotIndex,j); hZ[,.  
M9M~[[   
int k=partition(data,i-1,j,data[j]); R:fERj<s  
SortUtil.swap(data,k,j); MB%yC]w8  
if((k-i)>1) quickSort(data,i,k-1); {p=`"H>  
if((j-k)>1) quickSort(data,k+1,j); 'MVE5  
qwoF4_VN  
} (V!:6  
/** [x{'NwP?  
* @param data }f?$QSF  
* @param i W&T -E,  
* @param j M4~^tML>Ey  
* @return .SAOE'Foo  
*/ Lzm9Kh;  
private int partition(int[] data, int l, int r,int pivot) { ER;?[!  
do{ :G!i]1x<  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); :6:;Z qn  
SortUtil.swap(data,l,r); 8{^zXJi]m  
} O3 x9S,1i  
while(l SortUtil.swap(data,l,r); Pp#  
return l; qkPvE;"  
} =C gcRxng  
wxS.!9K  
} >cpT_M&C,  
z.P<)[LUc  
改进后的快速排序: IT!u4iH[  
+" |?P  
package org.rut.util.algorithm.support; z10J8Ms'  
#Ie/|  
import org.rut.util.algorithm.SortUtil; aQzx^%B1  
BE>^;`K  
/** # 3UrGom  
* @author treeroot n W:P"L  
* @since 2006-2-2 /Ps/m!  
* @version 1.0 8A'oK8Q  
*/ QM wrt  
public class ImprovedQuickSort implements SortUtil.Sort { 3)cH\gsg9  
AAuH}W>n  
private static int MAX_STACK_SIZE=4096; 0wQ'~8  
private static int THRESHOLD=10; X\sOeb:]  
/* (non-Javadoc) YS],o'T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) C&wp*  
*/ }w&W\g+E$  
public void sort(int[] data) { w=JO$7  
int[] stack=new int[MAX_STACK_SIZE]; icS% ])3LF  
?V&# nA  
int top=-1; r9sq3z|%  
int pivot; OYW:I1K<5  
int pivotIndex,l,r; &UrPb%=2H  
\Hb"bv  
stack[++top]=0; S*PcK>  
stack[++top]=data.length-1; bAOL<0RS9`  
@-zL"%%dw'  
while(top>0){ X/Sp!W-H  
int j=stack[top--]; [L(qrAQ2|z  
int i=stack[top--]; wB'GV1|jL  
'rl?'~={p  
pivotIndex=(i+j)/2; e\)r"!?H`  
pivot=data[pivotIndex]; -A1@a= q  
aN UU' [  
SortUtil.swap(data,pivotIndex,j); 8/gA]I 6=#  
AdU0 sZ+&c  
file://partition _"l2UDx  
l=i-1; f^Io:V\  
r=j; t9l]ie{"o.  
do{ $Iz*W]B!  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); VcX89c4\  
SortUtil.swap(data,l,r); @3*S:;x  
} -qyhg-k6  
while(l SortUtil.swap(data,l,r); G'#Uzwo  
SortUtil.swap(data,l,j); db*yA@2Lg  
U\y:\+e l  
if((l-i)>THRESHOLD){ ly9tI-E  
stack[++top]=i; p`qy57  
stack[++top]=l-1; -sqd?L.p  
} unvS`>)Np  
if((j-l)>THRESHOLD){ Nb3uDA5R  
stack[++top]=l+1; SL[EOz#  
stack[++top]=j; zu_bno!  
} E%%iVFPX  
L$t.$[~L  
} A'6-E{  
file://new InsertSort().sort(data); vC^Ul  
insertSort(data); b9R0"w!ml  
} i"`N5  
/** ^#gJf*'UE  
* @param data g|Tkl  
*/ 6c6w w"  
private void insertSort(int[] data) { 6w `.'5  
int temp; !&adO,jN+=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ()^tw5e'^  
} Ak kth*p  
} w ,*#z  
} Ua.%?V  
lJ Jn@A  
} <5!)5+G  
cv5+[;(b  
归并排序: 50e vWD  
RF}R~m9]  
package org.rut.util.algorithm.support; kO/YO)g  
C1==a FD  
import org.rut.util.algorithm.SortUtil; Df@b;-E  
]T=o>%  
/** GYrUB59  
* @author treeroot s|][p|  
* @since 2006-2-2 LFAefl\  
* @version 1.0 soOfk!b  
*/ ]+5Y\~I  
public class MergeSort implements SortUtil.Sort{ ;w;+<Rd  
BsR3$  
/* (non-Javadoc) QL\3|'a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) e7yn"kd  
*/ /Yj; '\3  
public void sort(int[] data) { pS "A{k)i  
int[] temp=new int[data.length]; *SYuq)  
mergeSort(data,temp,0,data.length-1); vt#&YXu{A  
} zmg :Z p=  
1()pKBHf  
private void mergeSort(int[] data,int[] temp,int l,int r){ +^q- v-  
int mid=(l+r)/2; 8&:dzS  
if(l==r) return ; V#+M lN  
mergeSort(data,temp,l,mid); ZEB,Q~  
mergeSort(data,temp,mid+1,r); %_(^BZd  
for(int i=l;i<=r;i++){ B A i ^t  
temp=data; Lh-+i  
} Tdxc%'l  
int i1=l; )_kU,RvZ  
int i2=mid+1; m'KEN<)s  
for(int cur=l;cur<=r;cur++){ ll ^I ;o0  
if(i1==mid+1) RgD:"zeM  
data[cur]=temp[i2++]; XzW\p8D^u  
else if(i2>r) L*6>S_l[  
data[cur]=temp[i1++]; ;ykX]5jGh  
else if(temp[i1] data[cur]=temp[i1++]; bSW~hyI w  
else "`V:4uz  
data[cur]=temp[i2++]; zUA -  
} G%dzJpC(  
} ]4Q~x  
# ';b>J  
} MFz6y":~  
 Cy5M0{  
改进后的归并排序: b2^O$ l  
?s]?2>p  
package org.rut.util.algorithm.support; ^3C%&  
fM3ZoH/  
import org.rut.util.algorithm.SortUtil; RijFN.s  
R=C+]  
/** g6H`uO  
* @author treeroot brdY97s4  
* @since 2006-2-2 n],"!>=+  
* @version 1.0 @Ll^ze&HI  
*/ \98|.EG  
public class ImprovedMergeSort implements SortUtil.Sort { {tuGkRY2 ~  
UAds$ 9  
private static final int THRESHOLD = 10; hM[I}$M&O  
JD ~]aoH  
/* KkSv2 3In  
* (non-Javadoc) #;\tgUQ  
* in>?kbaG+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Np?/r}  
*/ rW2l+:@c  
public void sort(int[] data) { -e.ygiK.`S  
int[] temp=new int[data.length]; BAy)P1  
mergeSort(data,temp,0,data.length-1); >L^ 2Z*  
} AQs_(LR  
Ku8qn \2"  
private void mergeSort(int[] data, int[] temp, int l, int r) { }q)dXFL=I#  
int i, j, k; DuRC1@e  
int mid = (l + r) / 2; {;={ abj  
if (l == r) 9-.`~v  
return; 5r^u7k  
if ((mid - l) >= THRESHOLD) 2SYV2  
mergeSort(data, temp, l, mid); Cp]q>lM"  
else G C@U['  
insertSort(data, l, mid - l + 1); CMfR&G,)  
if ((r - mid) > THRESHOLD) `o%Ua0x2  
mergeSort(data, temp, mid + 1, r); 2*Mu"v,  
else e9eBD   
insertSort(data, mid + 1, r - mid); ;h4w<OqcM  
|E FbT>  
for (i = l; i <= mid; i++) { 8'0KHn{#  
temp = data; `7_s@4:  
} `%.x0~ ih  
for (j = 1; j <= r - mid; j++) { k&o1z'<C  
temp[r - j + 1] = data[j + mid]; gP=@u.  
} Gx-tPW}  
int a = temp[l]; $u{ 8wF/)  
int b = temp[r]; ^S^7 u  
for (i = l, j = r, k = l; k <= r; k++) { &Fl* ,  
if (a < b) { .*L_*}tno  
data[k] = temp[i++]; 'In qa;TQz  
a = temp; 88+J(^y>  
} else { r%II` i  
data[k] = temp[j--]; CQ#%v%  
b = temp[j]; 5x}Or fDU  
} v H vwH  
} Nk shJ2  
} %|3NCyJ*7  
z.*=3   
/** ET q~, g'  
* @param data -42jeJS  
* @param l ?N@p~ *x  
* @param i _pR7sNeV  
*/ / Hexv#3  
private void insertSort(int[] data, int start, int len) { x2z%J,z@4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); g/x\#W  
} !J+< M~o}  
} B#(2,j7M  
} M2y"M,k4  
} /yL:_6c-  
A[X~:p.^G  
堆排序: Js!V,={iX  
%/=#8v4*  
package org.rut.util.algorithm.support; I)F3sS45}  
( O/+.qb  
import org.rut.util.algorithm.SortUtil; }&Jml%F4uR  
,a?$F1Z-  
/** |.[4$C  
* @author treeroot r!J?Lc])8  
* @since 2006-2-2 ejC== Fkc  
* @version 1.0 Gv zw=~8  
*/ `Hq)g1a7q  
public class HeapSort implements SortUtil.Sort{ qlfYX8edZ  
9% AL f 9  
/* (non-Javadoc)  e{33%5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Z CS{D  
*/ ]o\y(!  
public void sort(int[] data) { sz%'=J~!V  
MaxHeap h=new MaxHeap(); VC@{cVT  
h.init(data); Xm}~u?$3  
for(int i=0;i h.remove(); VwV`tKit  
System.arraycopy(h.queue,1,data,0,data.length); fdRw:K8  
} |,Xrt8O/[  
pg'3j3JW$  
private static class MaxHeap{ |KxFi H  
GP\Pk/E  
void init(int[] data){ 4#BoS9d2I<  
this.queue=new int[data.length+1]; xl~%hwBd  
for(int i=0;i queue[++size]=data; ZNvnVW<  
fixUp(size); +]%d'h  
}  uM9[  
} T7{Z0-  
+\a`:QET  
private int size=0; Ll !J!{  
S@a#,,\[  
private int[] queue; dM1)wkbET  
Cq,ox'kGl  
public int get() { 1>SCY _C v  
return queue[1]; OO:^#Mvv5  
} L27i_4E,  
[fU2$(mT+  
public void remove() { '_~=C-g  
SortUtil.swap(queue,1,size--); t$z FsFTQ  
fixDown(1); |*im$[g=-  
} "gD)Uis  
file://fixdown !v2D 18(  
private void fixDown(int k) { 12Hy.l  
int j; \Om< FH}  
while ((j = k << 1) <= size) { z Lw=*  
if (j < size %26amp;%26amp; queue[j] j++; VR/>V7*7@  
if (queue[k]>queue[j]) file://不用交换 J['paHSF  
break; 5CxD ys&<  
SortUtil.swap(queue,j,k); &r6VF/  
k = j; %jK-}0Tu  
} c D+IMlT  
} Mlp[xk|  
private void fixUp(int k) { '[fo  
while (k > 1) { VR>;{>~  
int j = k >> 1; fL8+J]6A6  
if (queue[j]>queue[k]) p*rBT,'  
break; pNo<:p  
SortUtil.swap(queue,j,k); 05\A7.iy  
k = j; {iqH 27\E  
} h,q%MZ==^s  
} L_.BcRy  
;K:)R_H  
} aZYa<28?L%  
dE*n!@  
} ;wfzlUBC  
Nt^R~#8hF>  
SortUtil: mJu;B3@  
\k1psqw^O  
package org.rut.util.algorithm; J(0.eD91v  
$-$^r;  
import org.rut.util.algorithm.support.BubbleSort; zLlu% Oc  
import org.rut.util.algorithm.support.HeapSort; f~u]fpkz  
import org.rut.util.algorithm.support.ImprovedMergeSort; Yw=Ve 0  
import org.rut.util.algorithm.support.ImprovedQuickSort; xn&G`  
import org.rut.util.algorithm.support.InsertSort; F7`3,SzHp  
import org.rut.util.algorithm.support.MergeSort; 0+0+%#?  
import org.rut.util.algorithm.support.QuickSort; tt`j!!  
import org.rut.util.algorithm.support.SelectionSort; A e&t#,)  
import org.rut.util.algorithm.support.ShellSort; yVm~5Y&Z  
k~u$&a  
/** x-k}RI  
* @author treeroot ^o]ZDc  
* @since 2006-2-2 g*b`V{/Vw  
* @version 1.0 V+X>t7.Q  
*/ nZa.3/7dJ  
public class SortUtil { D*Y4B ?,  
public final static int INSERT = 1; {Q[{H'Oa  
public final static int BUBBLE = 2; @^:R1c![s  
public final static int SELECTION = 3; o~,dkV  
public final static int SHELL = 4; ja}_u}:  
public final static int QUICK = 5; {[PoLOCI  
public final static int IMPROVED_QUICK = 6; D[m;rcl  
public final static int MERGE = 7; |k:MXI  
public final static int IMPROVED_MERGE = 8; l [?o du4  
public final static int HEAP = 9; M"2Tuwz  
n'{cU(  
public static void sort(int[] data) { *D1 ^Se  
sort(data, IMPROVED_QUICK); ]'=]=o~4  
} S1&mY'c  
private static String[] name={ ozF>2`K }  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" bR6.Xdt.n  
}; R+FBCVU&TJ  
^$SI5WK&)  
private static Sort[] impl=new Sort[]{ &Vfdq6Y]  
new InsertSort(), LFob1HH*8  
new BubbleSort(), 0'`>20Y  
new SelectionSort(), Iodk1Y;  
new ShellSort(), >6Y\CixN  
new QuickSort(), /=A?O\B7  
new ImprovedQuickSort(), ('pNAn!]  
new MergeSort(), ~isrE;N1|  
new ImprovedMergeSort(), k/YEUC5  
new HeapSort() q?g4**C  
}; m'k.R j  
Vm6G5QwM  
public static String toString(int algorithm){ H#x=eDU|k  
return name[algorithm-1]; \Q<c Y<  
} 7OX5"u!2  
PI(;t9]b  
public static void sort(int[] data, int algorithm) { b;#3X)  
impl[algorithm-1].sort(data); wl #Bv,xf  
} 5 G cdz  
e5_a.c  
public static interface Sort { 2`I" QU  
public void sort(int[] data); An!1>`8r  
} vO!p8r F  
" l vPge  
public static void swap(int[] data, int i, int j) { }z1aKa9  
int temp = data; jIwz G+)$P  
data = data[j]; sL|*0,#K  
data[j] = temp; wgxr8;8`q  
} FjqoO.  
} ?47q0C  
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