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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。 bHQKRV  
插入排序: lfpt:5a9&  
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package org.rut.util.algorithm.support; <E7Vbb9*  
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import org.rut.util.algorithm.SortUtil; ^2;(2s  
/** Ubw!/|mi  
* @author treeroot ^~r&}l4c,  
* @since 2006-2-2 [cTRz*\s  
* @version 1.0 4z0R\tjT  
*/ MNf@HG  
public class InsertSort implements SortUtil.Sort{ ofPF}  
JX\T {\m#  
/* (non-Javadoc) ++Ys9Y)*,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) uRB)g  
*/ S`2mtg  
public void sort(int[] data) { (4{ C7  
int temp; k}f<'g<H  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `3sy>GU?  
} =N@)CB7a  
} @cS1w'=  
} JW%/^'  
mS w?2ba  
} J^g,jBk  
.cH{WZ  
冒泡排序:  ENYF0wW  
O'!r]0Q  
package org.rut.util.algorithm.support; B::4Qme  
!}L~@[v,uL  
import org.rut.util.algorithm.SortUtil; ].k+Nzf_  
,>QMyI hv  
/** iBtjd`V*  
* @author treeroot e0~sUVYf  
* @since 2006-2-2  zU4V^N'  
* @version 1.0 6HEqm>Yau  
*/ 'd2qa`H'}B  
public class BubbleSort implements SortUtil.Sort{ c9*1$~(v0I  
l?o-!M{  
/* (non-Javadoc) {;Y 89&*R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^8';8+$  
*/ 7|+|\ 7l#  
public void sort(int[] data) { j]!7BHC  
int temp; \ifK~?  
for(int i=0;i for(int j=data.length-1;j>i;j--){ v.l7Q  
if(data[j] SortUtil.swap(data,j,j-1); >op:0on]}  
} $S6HZG:N  
} *]}CSZ[>  
} M1/M}~  
} nOAJ9  
2qs>Bshf  
} @pF fpHq?>  
lC'{QUC  
选择排序: |+Hp+9J  
sJ))<,e5I  
package org.rut.util.algorithm.support; 3d*&':  
/~3N@J  
import org.rut.util.algorithm.SortUtil; D00G1:Ft(T  
:]CzN^k(1c  
/** ,:#,}w_HyO  
* @author treeroot 8sN#e(@  
* @since 2006-2-2 &a%WM   
* @version 1.0 S=0"f}Jo.  
*/ jd%Len&p  
public class SelectionSort implements SortUtil.Sort {  ]{f^;y8  
N$\ bg|v  
/* ?S (im  
* (non-Javadoc) O1GDugZ  
* ?M*7@t@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V]I:2k5  
*/ 403[oOj  
public void sort(int[] data) { Y3#Nux%  
int temp; vU=9ydAj?  
for (int i = 0; i < data.length; i++) { j$3rJA%rN  
int lowIndex = i; J|V K P7  
for (int j = data.length - 1; j > i; j--) { Z[",$Lt  
if (data[j] < data[lowIndex]) { :P3{Nxa  
lowIndex = j; /b{o3, #.M  
} ]dvPx^`d{  
} nz4<pvC,*  
SortUtil.swap(data,i,lowIndex); \HAJ\9*w)  
} O0^?f/&k  
} q@(1Yivk  
1EVfowIl  
} H2_/,n  
taweGc%~  
Shell排序: 8wr8:( Y$  
"`pNH'   
package org.rut.util.algorithm.support; Vy__b=ti?  
B[r<m J  
import org.rut.util.algorithm.SortUtil; ]kx-,M(  
?w-1:NW jt  
/** }91*4@B7  
* @author treeroot v? L  
* @since 2006-2-2 $9 K(F~/  
* @version 1.0 v:E;^$6Vn  
*/ +R!zs  
public class ShellSort implements SortUtil.Sort{ Vtr3G.P^  
i}v9ut]B  
/* (non-Javadoc) h4_ b!E@  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) |( G2K'Ab  
*/ J! {Al  
public void sort(int[] data) { &)n_]R#)  
for(int i=data.length/2;i>2;i/=2){ ]jyM@  
for(int j=0;j insertSort(data,j,i); gV8"V Zg2  
} g+xw$A ou  
} 8-m 3e  
insertSort(data,0,1); afHaB/t{R  
} ef=K_, _  
`5q ;ssu  
/** .[?BlIlm  
* @param data )tS-.PrA-  
* @param j ]IZ>2!6r  
* @param i /`[!_4i  
*/ v!9i"@<!  
private void insertSort(int[] data, int start, int inc) { .6 3=(o  
int temp; %d1draL  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); T dk ,&8  
} 5+- I5HX|~  
} 0w %[  
} \=;uu_v$  
+f>cxA  
} ;#1Iiuh  
06 i;T~Y  
快速排序: 2#vv$YD  
PE"v*9k  
package org.rut.util.algorithm.support; (gwj)?:  
('C7=u&F  
import org.rut.util.algorithm.SortUtil; =Q<L eh=G  
['q&@_d7  
/** FY'ty@|_s  
* @author treeroot P:C2G(V1AR  
* @since 2006-2-2 I7n3xN&4"  
* @version 1.0 Qd &" BEs  
*/ Pm+tQ  
public class QuickSort implements SortUtil.Sort{ + H_WlYg-  
hePPxKQ-  
/* (non-Javadoc) -.IEgggf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F S"eM"z  
*/ usFfMF X  
public void sort(int[] data) { B=Ym x2A9]  
quickSort(data,0,data.length-1); ?wb+L  
} C/=XuKE-t  
private void quickSort(int[] data,int i,int j){ MFt*&%,JX  
int pivotIndex=(i+j)/2; 5D Y\:AF  
file://swap ]Mi.f3QlO6  
SortUtil.swap(data,pivotIndex,j); 4)6xU4eBaL  
l [GOs&D1  
int k=partition(data,i-1,j,data[j]); p\p\q(S">  
SortUtil.swap(data,k,j); V\]" }V)"  
if((k-i)>1) quickSort(data,i,k-1); ORN6vX(1  
if((j-k)>1) quickSort(data,k+1,j); ln!'_\{  
ziE*'p  
} S4^N^lQ]  
/** C? 4JXW  
* @param data V 9wI\0  
* @param i .w?(NZ2~  
* @param j l_rn++  
* @return errH>D~  
*/ E Y<8B3y  
private int partition(int[] data, int l, int r,int pivot) { iRV~Il#~!  
do{ ;`YkMS`=W  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); bx4'en#  
SortUtil.swap(data,l,r); AK!hK>u`  
} 4mjgt<`  
while(l SortUtil.swap(data,l,r); -]uUYe c  
return l; nlYR-.  
} O,2~"~kF  
*l+OlQI0+  
} A - YBQPE  
|'O[7uT  
改进后的快速排序: H5CR'Rp  
M 3 '$[  
package org.rut.util.algorithm.support; 3.d"rl  
CT9   
import org.rut.util.algorithm.SortUtil; 7uorQfR?  
b-U eIjX  
/** IQ< MyB(  
* @author treeroot "xmP6=1  
* @since 2006-2-2 .d;Iht,[  
* @version 1.0 B vo5-P6XY  
*/ )n49lr6 X  
public class ImprovedQuickSort implements SortUtil.Sort { PNF?;*`-{7  
\!vN   
private static int MAX_STACK_SIZE=4096; {rfF'@[  
private static int THRESHOLD=10; 3f " %G\  
/* (non-Javadoc) u] :m"L M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 99$ 5`R;  
*/ H1GRMDNXOA  
public void sort(int[] data) { Aa0b6?Jm  
int[] stack=new int[MAX_STACK_SIZE]; /+*#pDx/zW  
XC 7?VE  
int top=-1; p.}Ls)I  
int pivot; DFhXx6]  
int pivotIndex,l,r; )VL96did  
9a\nszwa  
stack[++top]=0; }+o:j'jB  
stack[++top]=data.length-1; Uz cx6sw  
%75xr9yOP  
while(top>0){ j'[m:/  
int j=stack[top--]; f/WQ[\<!I  
int i=stack[top--]; -9RDr\&`(  
O}9KJU  
pivotIndex=(i+j)/2; 3nT Z)L }  
pivot=data[pivotIndex]; *  tCS  
B][U4WJ)  
SortUtil.swap(data,pivotIndex,j); qGB{7-ru  
=JK@z  
file://partition 7byK{{/z  
l=i-1; IoQEtA  
r=j; |y!=J$ $_H  
do{ |Mu p8(gCk  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _VRpI)mu  
SortUtil.swap(data,l,r); [65 `$x-  
} hKLCJ#T  
while(l SortUtil.swap(data,l,r); @"Fme-~  
SortUtil.swap(data,l,j); K/j3a[.  
a!7A_q8M  
if((l-i)>THRESHOLD){ vNV/eB8#S  
stack[++top]=i; 0WZ_7C?  
stack[++top]=l-1; eg\v0Y!rI  
} la0BiLzb]  
if((j-l)>THRESHOLD){ P;=n9hgHI  
stack[++top]=l+1; ;c-(ObSm  
stack[++top]=j; /Y W>*?"N  
} =9O^p@Q#W  
oTU!R ,  
} )t0$qd ]  
file://new InsertSort().sort(data); *4Thd:7 `  
insertSort(data); EUD~CZhS"k  
} p{amC ;cI$  
/** 8=B|C'>  
* @param data #>b3"[ |  
*/ vM*-D{  
private void insertSort(int[] data) { ]HKQDc'  
int temp; fi-WZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?26I,:;  
} ieDk;  
} &S{RGXj_  
} bhTb[r  
]i&6c  
} +%zAQeb  
dpAjR  
归并排序: b#uL?f  
Bn=by{i  
package org.rut.util.algorithm.support; nt 81Bk=  
][gq#Vx@  
import org.rut.util.algorithm.SortUtil; 3KR d  
~("5y G  
/** 1L%CJ+Q#0i  
* @author treeroot {C 6=[  
* @since 2006-2-2 <C1H36p  
* @version 1.0 /[a~3^Gs^  
*/ J`peX0Stl  
public class MergeSort implements SortUtil.Sort{ A>vBQN  
9Tg IB  
/* (non-Javadoc) wxR,OR  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w j*,U~syB  
*/ ?J%1#1L"/  
public void sort(int[] data) { ,~aQL  
int[] temp=new int[data.length]; _(_a*ml  
mergeSort(data,temp,0,data.length-1); '-r).Xk  
} 2KB\1&N  
9v;Vv0k_  
private void mergeSort(int[] data,int[] temp,int l,int r){ Hbj,[$Jb  
int mid=(l+r)/2; EY^1Y3D w0  
if(l==r) return ; !^^?dRd*v  
mergeSort(data,temp,l,mid); +DW~BS3  
mergeSort(data,temp,mid+1,r); TTeH `  
for(int i=l;i<=r;i++){ 3C?f(J}  
temp=data; 8qk?E6  
} Pj#<K%Bz  
int i1=l; c&r70L,  
int i2=mid+1; X\`_3=  
for(int cur=l;cur<=r;cur++){ #^`4DhQ/ 1  
if(i1==mid+1) 8UW^"4  
data[cur]=temp[i2++]; Sc>,lIM  
else if(i2>r) M`. tf_x  
data[cur]=temp[i1++]; ^WHE$4U`  
else if(temp[i1] data[cur]=temp[i1++]; 0C =3dnp6  
else 4iqoR$3Fc  
data[cur]=temp[i2++]; -(~.6WnhS  
} -d~4A  
} zO~8?jDN4|  
-l`f)0{  
} `Bo*{}E  
Of- Rx/  
改进后的归并排序: G^~k)6v=m  
88VZR&v   
package org.rut.util.algorithm.support; H;?{BV  
c2h{6;bfY  
import org.rut.util.algorithm.SortUtil; xe#FUS 3  
!g?|9  
/** 6 )Hwt_b  
* @author treeroot XF Patd  
* @since 2006-2-2 Ozw;(fDaU  
* @version 1.0 ;'?l$ ._  
*/ DQNnNsP:M-  
public class ImprovedMergeSort implements SortUtil.Sort { NV)!7~r}:  
1QqYQafA  
private static final int THRESHOLD = 10; ZRv*!n(Ug<  
Usr@uI#{J  
/* 2VF%@p  
* (non-Javadoc) C+?Hm1  
* E4gYemuN  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) y)F;zW<+  
*/ s8QM ewU  
public void sort(int[] data) { 0]>u )%  
int[] temp=new int[data.length]; `sUZuWL_  
mergeSort(data,temp,0,data.length-1); hhSy0  
} q`|LRz&al  
!$DIc  
private void mergeSort(int[] data, int[] temp, int l, int r) { aHs^tPg  
int i, j, k; =CK4.   
int mid = (l + r) / 2; <DMl<KZ  
if (l == r) *7*lE"$p  
return; F|F]970  
if ((mid - l) >= THRESHOLD) $u7; TW6QD  
mergeSort(data, temp, l, mid); aY3^C q(r  
else `k OD[*  
insertSort(data, l, mid - l + 1); 'HT7_$?*  
if ((r - mid) > THRESHOLD) E>&n.%  
mergeSort(data, temp, mid + 1, r); |s)Rxq){"V  
else N<f"]  
insertSort(data, mid + 1, r - mid); ML:Q5 ^`  
s<*XN NE7  
for (i = l; i <= mid; i++) { $>*3/H  
temp = data; O>SLOWgha  
} 6Ca(U'  
for (j = 1; j <= r - mid; j++) { )_1zRT|9  
temp[r - j + 1] = data[j + mid]; \x)n>{3C  
} W^fuScG)c  
int a = temp[l]; Z= jr-)kK  
int b = temp[r]; cS>e?  
for (i = l, j = r, k = l; k <= r; k++) { z)'Mk[  
if (a < b) { k:*S&$S!E  
data[k] = temp[i++]; KQacoUHrK?  
a = temp; y(Y!?X I  
} else { 8'~[pMn`  
data[k] = temp[j--]; K|Ld,bq  
b = temp[j]; g$HwxA9Gp/  
} /3A^I{e74  
} e "/;7:J5\  
} $P>`m$(8  
S M!Txe#  
/** *4_jA](  
* @param data sW)Zi  
* @param l }-ftyl7  
* @param i n,=VQ Ou  
*/ vLR~'" `F  
private void insertSort(int[] data, int start, int len) { A6GE,FhsG  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ~7Ts_:E-  
} GN-mrQo  
} 7s"< 'cx_F  
} ~2<7ZtV=  
} .gG1kWA-  
(ohq0Y  
堆排序: hJwC~HG5  
KC(xb5x Y  
package org.rut.util.algorithm.support; 3= xhoRX  
8aO~/i:(.  
import org.rut.util.algorithm.SortUtil; !6s"]WvF  
qY~`8 x  
/** ]04 e1F1J  
* @author treeroot XEn*?.e  
* @since 2006-2-2 Ul2R'"FB  
* @version 1.0 !,[C] Q1  
*/ =Vy`J)z9  
public class HeapSort implements SortUtil.Sort{ A$#p%y b  
Xv< B1  
/* (non-Javadoc) fRy^Q_~,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }| J79s2M  
*/ T^T[$26  
public void sort(int[] data) { GDu~d<RH  
MaxHeap h=new MaxHeap(); RY c!~Wh~Y  
h.init(data); Eq$&qV-?(  
for(int i=0;i h.remove(); `D`sr[3n  
System.arraycopy(h.queue,1,data,0,data.length); Mu{;vf|j  
} ,Y|^^?'j Q  
U>V&-kxtV  
private static class MaxHeap{ X>NhZ5\  
f 1w~!O9  
void init(int[] data){ OR}c)|1  
this.queue=new int[data.length+1]; yHHt(GM|o  
for(int i=0;i queue[++size]=data; 0j30LXI_  
fixUp(size); 9AxCiT.  
} (q{Ck#+  
} _<a7CCg  
ua5OGx  
private int size=0; k]5Bykf`Ky  
A|L8P  
private int[] queue; fO0(Z  
SfJ./ny  
public int get() { t5'V6nv  
return queue[1]; qZ}P*+`Q  
} F>]m3(  
uq, { tV  
public void remove() { 4'-|UPhx  
SortUtil.swap(queue,1,size--); cx}Q2S  
fixDown(1); 87:!C5e}  
} d?:=PH  
file://fixdown ?t+5s]  
private void fixDown(int k) { EL8NZ%:v:  
int j; mp9{m`Jb*  
while ((j = k << 1) <= size) { &Y 4F!Rb  
if (j < size %26amp;%26amp; queue[j] j++; >. '<J]  
if (queue[k]>queue[j]) file://不用交换 td4[[ /  
break; ^s@8VAwi  
SortUtil.swap(queue,j,k); y`$Q \}fS  
k = j; ]d a^xWK  
} rg{9UVj  
} ZTU&, 1Y;  
private void fixUp(int k) { TQ`Rk;0R  
while (k > 1) { X=Ys<TM,  
int j = k >> 1; =QK$0r]c'k  
if (queue[j]>queue[k]) W-.pmU e2  
break; $KLD2BAL  
SortUtil.swap(queue,j,k); em\ 9'L^  
k = j; j'aHF#_  
} :^Fh!br==  
} D K=cVpN%s  
)u/H>;L P  
} UN%Vg:=  
F29v a  
} AgRjr"hF*e  
 1~l I8  
SortUtil: XuD=E  
6gT5O]]#o  
package org.rut.util.algorithm; {5d9$v7k4  
M)+$wp  
import org.rut.util.algorithm.support.BubbleSort; ,SQZD,3v4  
import org.rut.util.algorithm.support.HeapSort; P%#*-zCCx  
import org.rut.util.algorithm.support.ImprovedMergeSort; vk>b#%1{  
import org.rut.util.algorithm.support.ImprovedQuickSort; <`jLY)sw  
import org.rut.util.algorithm.support.InsertSort; = <j"M85.  
import org.rut.util.algorithm.support.MergeSort; `u.t[  
import org.rut.util.algorithm.support.QuickSort; QT9n,lX  
import org.rut.util.algorithm.support.SelectionSort; lip[n;Ir>  
import org.rut.util.algorithm.support.ShellSort; xS7$%w['  
3d-%>?-ee  
/** eL4NB$Fb  
* @author treeroot 25NTIzI@@  
* @since 2006-2-2 fZxIY,  
* @version 1.0 >yXN,5d[  
*/ nOQa_G]Gz  
public class SortUtil { :> &fV  
public final static int INSERT = 1; / }Rz=&  
public final static int BUBBLE = 2; avy"r$v_&  
public final static int SELECTION = 3; <,AS8^$X[  
public final static int SHELL = 4; %0 #XPc("  
public final static int QUICK = 5; ->h6j  
public final static int IMPROVED_QUICK = 6; {CR5K9  
public final static int MERGE = 7; 'S[++w?Qq  
public final static int IMPROVED_MERGE = 8; a6:x"Tv  
public final static int HEAP = 9; _:+ KMR  
:5/Uh/sX  
public static void sort(int[] data) { s;1]tD  
sort(data, IMPROVED_QUICK); p-%|P ]&  
} xr7+$:>a  
private static String[] name={ h(qQsxIOhS  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ?88`fJ@tk?  
}; pA;-v MpMj  
~+<olss_  
private static Sort[] impl=new Sort[]{ +525{Tj  
new InsertSort(), Iyd?|f"  
new BubbleSort(), /T,Z>R  
new SelectionSort(), goJ|oi  
new ShellSort(), Fb/XC:AD  
new QuickSort(), N$x tHtz8"  
new ImprovedQuickSort(), GabYfUkO  
new MergeSort(), ( Y+N@d  
new ImprovedMergeSort(), m=Q[\.Ra  
new HeapSort() s/:Fwr4q#a  
}; _/S?#   
v`V7OD#:j]  
public static String toString(int algorithm){ Y%|@R3[Nk  
return name[algorithm-1]; IScRsxFb  
} $ n,Z  
'a^{=+  
public static void sort(int[] data, int algorithm) { W23]Bx  
impl[algorithm-1].sort(data); htm{!Z]s0  
} ^uS/r#l  
Z+pom7A"E  
public static interface Sort { {B*W\[ns  
public void sort(int[] data); 0t#g }  
} "4H8A =  
.+y>8h3{  
public static void swap(int[] data, int i, int j) { kCUT ^  
int temp = data; M,3wmW&d6  
data = data[j]; Px M!U!t  
data[j] = temp; W9t"aZor  
} WxbsD S;  
} Ufo>|A6;$  
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