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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。 `#N7ym;s@  
插入排序: y]f| U-f:~  
BH=C  oD.  
package org.rut.util.algorithm.support; w9a6F  
$d7{q3K&1  
import org.rut.util.algorithm.SortUtil; '~'3x4Bo  
/** OAz -w  
* @author treeroot T k4"qGC.  
* @since 2006-2-2 }L*cP;m#  
* @version 1.0 Cqk6Igw  
*/ u@zBE? g  
public class InsertSort implements SortUtil.Sort{ $(%t^8{a~G  
9Uh nr]J.  
/* (non-Javadoc) bDPT1A`F  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S b3@7^  
*/ c}FZb$q#  
public void sort(int[] data) { *,DBRJ_*7  
int temp; zHCz[jlrMq  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K&noA  
} Q}jl1dIq  
} :!Tb/1  
} v4Q8RE?  
{z}OZHJN  
} ) 4'@=q  
/1lUFL2D  
冒泡排序: CR$5'#11)  
mWM!6"  
package org.rut.util.algorithm.support; ZK]C!8\2|  
|bz,cvlP W  
import org.rut.util.algorithm.SortUtil; ]={{$}8.  
bdCpGG9  
/** etH%E aF[  
* @author treeroot dGzZ_Vf  
* @since 2006-2-2 Oj0/[(D-  
* @version 1.0 `W8dayZt  
*/ ABp/uJI)  
public class BubbleSort implements SortUtil.Sort{ 5<ycF_  
u|D_"q~+6  
/* (non-Javadoc) A3N<;OOk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AHhck?M^  
*/ 9_ GR\\  
public void sort(int[] data) { cv["Ps#;`W  
int temp; aNCIh@m~  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Ol24A^  
if(data[j] SortUtil.swap(data,j,j-1); ,#r>#fi0  
} ""ICdZ_A  
} PZ"=t!  
} 9YpD\H`  
} .r?-O{2t  
!}^ {W)h[  
} ?J~(qaa;  
OE/O:F:1j  
选择排序: HLU'1As65  
JQ8wL _C>  
package org.rut.util.algorithm.support; X}xy v  
d1#;>MiU  
import org.rut.util.algorithm.SortUtil; ~8Z0{^  
:_Y@,CpIEg  
/** GKwm %A  
* @author treeroot PDo%ob\Ym  
* @since 2006-2-2 eVDI7W:(Sn  
* @version 1.0 i1 ?H*:]  
*/ iVt6rX  
public class SelectionSort implements SortUtil.Sort { x,z+l-y  
NQ!jkojD  
/* q8.K-"f(Q  
* (non-Javadoc) MD S;qZx=  
* 0> m-J  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aQaO.K2  
*/ n ||/3-HDj  
public void sort(int[] data) { 70L{u+wIy  
int temp; </|IgN$w`  
for (int i = 0; i < data.length; i++) { *O|Z[>  
int lowIndex = i; (AdQ6eGMb  
for (int j = data.length - 1; j > i; j--) { Q%(LMq4UG  
if (data[j] < data[lowIndex]) { W^q;=D6uh  
lowIndex = j; |[?"$g9v  
} ".eD&oX{  
} Z*QsDS  
SortUtil.swap(data,i,lowIndex); nJ4i[j8  
} Qsc%qt-l  
} /4]M*ls  
QOkPliX  
} m-UI^M,@<  
[dL4u^]{  
Shell排序: :0j9  
2*5Z| 3aX  
package org.rut.util.algorithm.support; ~w'M8(  
t+5JIQY>  
import org.rut.util.algorithm.SortUtil; RJ1 Q.o  
-1~bWRYq  
/** Mjrl KI}f/  
* @author treeroot $z]gy]F  
* @since 2006-2-2 Cw`v\ 9  
* @version 1.0 E3y"  
*/ g&H6~ +\  
public class ShellSort implements SortUtil.Sort{ `6b!W0$ -  
}r6SV%]:  
/* (non-Javadoc) HP2]b?C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) #m6 eG&a  
*/ _U)DL=a'  
public void sort(int[] data) { INsc!xOQ  
for(int i=data.length/2;i>2;i/=2){ e;56}w  
for(int j=0;j insertSort(data,j,i); h84}lxT^]  
} ^Pf FW  
} jAmAT /1  
insertSort(data,0,1); VC\43A,9  
} O/>$kG%ge  
6';'pHqe  
/** T+m`a #  
* @param data pIk&NI  
* @param j UjwA06  
* @param i }| _uqvin  
*/ o-B9r+N  
private void insertSort(int[] data, int start, int inc) { IDb|J%e^P  
int temp; ,YJ\ $?  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); Q_xE:#!;  
} yw2^kk93|  
} c-!rJHL`  
} T%Vii*?M  
#vYdP#nWb  
} Nrva?W_i  
Iw8;",e2  
快速排序: tB4- of3+  
a5:Q%F<!  
package org.rut.util.algorithm.support; %lAJ]$m  
? r=cLC  
import org.rut.util.algorithm.SortUtil; )R+@vh#Q<$  
W\o(f W  
/** eP$0TDZ  
* @author treeroot xXM`f0s@+]  
* @since 2006-2-2 ]QM6d(zDA  
* @version 1.0 )Fk%, H-1  
*/ `9Zoq=/  
public class QuickSort implements SortUtil.Sort{ a0Cf.[L  
b40zYH`'{  
/* (non-Javadoc) n|Vs27  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  a= ;7  
*/ &96I4su  
public void sort(int[] data) { ^wCjMi(sj  
quickSort(data,0,data.length-1); PmO utYV  
} MRi QaUg2  
private void quickSort(int[] data,int i,int j){ mF [w-<:.d  
int pivotIndex=(i+j)/2; ScYw3i  
file://swap f@+[-yF  
SortUtil.swap(data,pivotIndex,j); as- Z)h[B  
&!vJ3:  
int k=partition(data,i-1,j,data[j]); kN >%y&cK  
SortUtil.swap(data,k,j); xWD=",0+  
if((k-i)>1) quickSort(data,i,k-1); wj9CL1Gx  
if((j-k)>1) quickSort(data,k+1,j);  qm&}^S  
Id(o6j^J_  
} =xWZJ:UnU  
/** \zw0*;&U  
* @param data {3]g3mj  
* @param i hWwh`Vw%  
* @param j 1+v&SU  
* @return *<#jr  
*/ 4:=']C  
private int partition(int[] data, int l, int r,int pivot) { <ZxxlJS)6  
do{ k:Sxs+)?1  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot);  ;?1H&  
SortUtil.swap(data,l,r); UP}Y s*  
} <Vm+Lt9  
while(l SortUtil.swap(data,l,r); 2?58=i%b  
return l; tzJdUZJ  
} \,i9m9;y  
aG}ju;  
} : I28Zi*  
m+||t  
改进后的快速排序: >xws  
gEbe6!; q3  
package org.rut.util.algorithm.support; a H'iW)  
QpwOrxI}  
import org.rut.util.algorithm.SortUtil; {$)zC*l  
r5> FU>7'  
/** oE[wOq +  
* @author treeroot j<>E Fd  
* @since 2006-2-2 #ok1qT9_  
* @version 1.0 A&rk5y;  
*/ O7 %<(  
public class ImprovedQuickSort implements SortUtil.Sort { &duWV6Acw  
XYhN;U}Z  
private static int MAX_STACK_SIZE=4096; at]=SA  
private static int THRESHOLD=10; >{p&_u.r-  
/* (non-Javadoc) mk8xNpk B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }&Un8Rg"h  
*/ G < Z)y#  
public void sort(int[] data) { bO>q`%&  
int[] stack=new int[MAX_STACK_SIZE]; trcG^uV  
Q{T6t;eH  
int top=-1; 7T9m@  
int pivot; MWl?pG!Y  
int pivotIndex,l,r; [ X]yj  
a7s+l=  
stack[++top]=0; l5QH8eNwME  
stack[++top]=data.length-1; x7)j?2  
<|[G=GA\S!  
while(top>0){ 5drc8_fZ  
int j=stack[top--]; @H2c77%  
int i=stack[top--]; q`_d>l  
je@F:5  
pivotIndex=(i+j)/2; F]DRT6)  
pivot=data[pivotIndex]; W~(@*H  
7Vd"k;:X  
SortUtil.swap(data,pivotIndex,j); Rd@34"O  
_^;+_6&[  
file://partition QPB@qx#@  
l=i-1; 5[}3j1  
r=j; Osncl5PD)  
do{ 9W88_rE'e}  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ".A+'pJ  
SortUtil.swap(data,l,r); yoiKt; S  
} 0YK`wuZGS  
while(l SortUtil.swap(data,l,r); =NLsT.aa  
SortUtil.swap(data,l,j); gcDo o2RE  
ms2y[b  
if((l-i)>THRESHOLD){ =&G<^7  
stack[++top]=i; |b" h+  
stack[++top]=l-1; ]=\vl>W  
} ?3 {&"  
if((j-l)>THRESHOLD){ DKw%z8ft|  
stack[++top]=l+1; C4wJSQl_I  
stack[++top]=j; )Be?axI  
} d5h]yIz^  
3<.]+ukm  
} (?R;u>  
file://new InsertSort().sort(data); )@+lfIE(l  
insertSort(data); VWDXEa9  
} ^Z1t'-xZ  
/** j06?Mm_c2  
* @param data e59P6/z  
*/ "zFv? ay  
private void insertSort(int[] data) { vU,AOK[l{  
int temp; kHLpa/A  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); zj:= 9$  
} !lQGoXQ'4  
} D+edTAQ8  
} ev~/Hf  
C+ibLS4i  
} 7{F(NJUO1  
${I$@qq83  
归并排序: z\64Qpfm  
n[DQ5l  
package org.rut.util.algorithm.support; & D@/_m $  
n.9k<  
import org.rut.util.algorithm.SortUtil; vC$Q4>m  
T,N"8N{K"  
/** rHe*/nN%*  
* @author treeroot pkTg.70wU  
* @since 2006-2-2 0-Z sV3I&  
* @version 1.0 )Dn~e#  
*/ V)x(\ls]SX  
public class MergeSort implements SortUtil.Sort{ qkQ _#  
E.~;  
/* (non-Javadoc) a(Q4*XH4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =2+';Xk\  
*/ 81?7u!=ic+  
public void sort(int[] data) { x~1.;dBF  
int[] temp=new int[data.length]; T'YHV}b}vX  
mergeSort(data,temp,0,data.length-1); kg@D?VqJP  
} x1H?e8  
MtE18m "z  
private void mergeSort(int[] data,int[] temp,int l,int r){ 9gjI;*(z1  
int mid=(l+r)/2; _<Hx1l~  
if(l==r) return ; Twqkd8[  
mergeSort(data,temp,l,mid); ! C}t)R]^  
mergeSort(data,temp,mid+1,r); ^Ej4^d  
for(int i=l;i<=r;i++){ /P_1vQq  
temp=data; dzA5l:5  
} IX/FKSuq  
int i1=l; !%w#h0(b  
int i2=mid+1; D2hEI2S  
for(int cur=l;cur<=r;cur++){ OPm ?kr  
if(i1==mid+1) Xxl>,QUA  
data[cur]=temp[i2++]; )HZUCi/F]  
else if(i2>r) \=n0@1Q=>  
data[cur]=temp[i1++]; O<}^`4d  
else if(temp[i1] data[cur]=temp[i1++]; /WIO@c  
else Z)iRc$;  
data[cur]=temp[i2++]; r]!<iw  
} b1X.#pz7F  
} nq'vq] ]  
 ?gZJ v  
} a2:Tu  
RX]x3-  
改进后的归并排序: G`!ff  
_W@SCV)yH  
package org.rut.util.algorithm.support; 7lP3\7wD@9  
/ D9FjOP  
import org.rut.util.algorithm.SortUtil; Rg:3}T`~n  
bXN-q!  
/** >;E[XG^  
* @author treeroot qg7] YT&  
* @since 2006-2-2 79.J`}#  
* @version 1.0 5f54E|vD  
*/ 8mjP2  
public class ImprovedMergeSort implements SortUtil.Sort { iU)-YFO  
D+ki2UVt&  
private static final int THRESHOLD = 10; NW-l_]k  
>v4k_JX  
/* GPqF>   
* (non-Javadoc) V<} ^n  
* 9&'I?D&8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) , N :'Z  
*/ ,gU%%>-_~w  
public void sort(int[] data) { | ?6wlf  
int[] temp=new int[data.length]; tE)%*z@<Lt  
mergeSort(data,temp,0,data.length-1); xx}R6VKU.  
} " mKMym2  
 KR  
private void mergeSort(int[] data, int[] temp, int l, int r) { cQ4TYr;?  
int i, j, k; MSEBv Z-  
int mid = (l + r) / 2; wu*WA;FnA  
if (l == r) Kuh! b`9  
return;  ]Ll <  
if ((mid - l) >= THRESHOLD) Q]*YIb~D  
mergeSort(data, temp, l, mid); C,C=W]G  
else DdI7%?hK  
insertSort(data, l, mid - l + 1); !'14mN#A  
if ((r - mid) > THRESHOLD) kndP?#> p1  
mergeSort(data, temp, mid + 1, r); nG#lrYZw  
else ?e |'I"  
insertSort(data, mid + 1, r - mid); l+'1>T.I  
k&nhF9Y4  
for (i = l; i <= mid; i++) { _ Ko0  
temp = data;  FNZB M  
} _/[n/"gn  
for (j = 1; j <= r - mid; j++) { l<<G". ?  
temp[r - j + 1] = data[j + mid]; ^qpa[6D6x  
} vOYcS$,^X%  
int a = temp[l]; .js4)$W^  
int b = temp[r]; -;$+`<%  
for (i = l, j = r, k = l; k <= r; k++) { UQ|zSalv,  
if (a < b) { 7YRDQjg  
data[k] = temp[i++]; =q|fe%#  
a = temp; uTJi }4cw  
} else { <$liWAGX\  
data[k] = temp[j--]; &%pB; dk  
b = temp[j]; #( nheL  
} X$JO<@x  
} {nQ}t }B  
} BfOG e!Si  
 =erA.u  
/** Vvx(7p-GQ  
* @param data $"{V],:T |  
* @param l ADX}  
* @param i u)P$xkf  
*/ 3&*0n^g  
private void insertSort(int[] data, int start, int len) { rL URP2~  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); y? [*qnPj  
} T[)) ful  
} 0:G@a&Lr  
} @];#4O  
} MW9B -x  
tYfhKJzGC  
堆排序: U]sU b3  
(2@b ,w^  
package org.rut.util.algorithm.support; ZLvw]N&R  
#f|-l$a)3a  
import org.rut.util.algorithm.SortUtil; o*n""m  
Fc}wu W  
/** 2W pe( \(  
* @author treeroot EpGe'S  
* @since 2006-2-2 [[D}vL8d  
* @version 1.0 hk ./G'E  
*/ )ymF: ]QC  
public class HeapSort implements SortUtil.Sort{ 89l_%To  
}jU{RR%6B  
/* (non-Javadoc) &3{:h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) :kZ2N67  
*/ p!'wOThO`  
public void sort(int[] data) { 5*buRYck0  
MaxHeap h=new MaxHeap(); oW]&]*>J  
h.init(data); =Ak>2  
for(int i=0;i h.remove(); v85&s  
System.arraycopy(h.queue,1,data,0,data.length); MbnV5b:X  
} zi>f436-  
~s^&*KaA  
private static class MaxHeap{ 7k6rhf7H  
tBBN62^ X  
void init(int[] data){ j~DoMP5Ls  
this.queue=new int[data.length+1]; pq5)Ug  
for(int i=0;i queue[++size]=data; e;3$7$n Pv  
fixUp(size); Lu:!vTRmw  
} q\#3G  
} @7lZ{jV$  
jZv8X 5i  
private int size=0; s*k"-5  
8Z3+S)6  
private int[] queue; y8+?:=N.  
lRt8{GFy  
public int get() { 4)j<(5  
return queue[1]; ]^ O<WD  
} ZuS+p0H"  
2L<TqC{,-  
public void remove() { d+T]EpQJ*  
SortUtil.swap(queue,1,size--); n]Dq  
fixDown(1); L&3=5Bf9  
} Tjs-+$P+  
file://fixdown bT{P1nUu  
private void fixDown(int k) { PLLlo~Bb  
int j; >4EcV1y  
while ((j = k << 1) <= size) { flLmZ1"  
if (j < size %26amp;%26amp; queue[j] j++; [RpFC4W  
if (queue[k]>queue[j]) file://不用交换 Y_/Kd7,\~  
break; `MTOe 1  
SortUtil.swap(queue,j,k); '&<-,1^L  
k = j; Zl,K#  
} OD1ns  
} r)j#Skh].  
private void fixUp(int k) { R:.7 c(s  
while (k > 1) { ^\+6*YE 4  
int j = k >> 1; I:6xDDpZG`  
if (queue[j]>queue[k]) KktTR`W  
break; RM<\bZPc  
SortUtil.swap(queue,j,k); M2xUs  
k = j; bkOm/8k|4  
} 5 #kvb$97  
} !d(!1fC  
5 h{Hf]A  
} LnJ7i"Q  
coLn};W2  
} 0>e>G(4(8  
P;_dil G  
SortUtil: BK /;H G  
19# )# n^  
package org.rut.util.algorithm; a|s=d  
[\.>BK  
import org.rut.util.algorithm.support.BubbleSort; gdG: &{|x  
import org.rut.util.algorithm.support.HeapSort; ))KsQJ"V  
import org.rut.util.algorithm.support.ImprovedMergeSort; Z#J{tXZc  
import org.rut.util.algorithm.support.ImprovedQuickSort; ' xi..  
import org.rut.util.algorithm.support.InsertSort; '6WDs]\  
import org.rut.util.algorithm.support.MergeSort; rLKDeB  
import org.rut.util.algorithm.support.QuickSort; z:fhq:R(  
import org.rut.util.algorithm.support.SelectionSort; U_8I$v-~  
import org.rut.util.algorithm.support.ShellSort; }bnkTC  
X r)d;@yi  
/** pH~JPNng  
* @author treeroot gRqz8UI  
* @since 2006-2-2 {W4t]Ff  
* @version 1.0 {(MG: B  
*/ 1b!l+ 8!  
public class SortUtil { cEQa 6  
public final static int INSERT = 1; AMm O+E?  
public final static int BUBBLE = 2; #&5\1Qu  
public final static int SELECTION = 3; r=[}7N  
public final static int SHELL = 4; 9=}/t9k  
public final static int QUICK = 5; /6.b>|zF  
public final static int IMPROVED_QUICK = 6; JWdG?[$  
public final static int MERGE = 7; /nmfp&@  
public final static int IMPROVED_MERGE = 8; +es6c')  
public final static int HEAP = 9; %4-pw|':  
hBqu,A  
public static void sort(int[] data) { U&/S  
sort(data, IMPROVED_QUICK); >S3 >b  
} @"EX%v.  
private static String[] name={ ;yXnPAtJ  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <?7~,#AK  
}; X'F$K!o*,:  
 Uh8ieb  
private static Sort[] impl=new Sort[]{ 7>mYD3  
new InsertSort(), ,Z^GN%Q7a  
new BubbleSort(), V9bLm,DtT  
new SelectionSort(), }wb;ulN)  
new ShellSort(), 1 `AE]  
new QuickSort(), DtS{iH=s]  
new ImprovedQuickSort(), A3$b_i@P  
new MergeSort(), #3$|PM7,_  
new ImprovedMergeSort(), 0`thND)?O  
new HeapSort() _ o(h]G1].  
}; lyeoSd1AN  
;7A,'y4f  
public static String toString(int algorithm){  "O 'I  
return name[algorithm-1]; ;C<A }  
} SYwNx">Bq  
;(,Fe/wvC  
public static void sort(int[] data, int algorithm) { a RwBxf  
impl[algorithm-1].sort(data); 'ng/A4  
} vJ' 93 h  
LYF vzw>M  
public static interface Sort { 4>HGwk@+8  
public void sort(int[] data); sP |i '  
} CUG<v3\  
tSYnc7  
public static void swap(int[] data, int i, int j) { ]mh+4k?b  
int temp = data; ]>,|v,i =  
data = data[j]; ]z%9Q8q'  
data[j] = temp; 1mV0AE538  
} 6;*(6$;  
} TExlGAHo+O  
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