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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。 &) '5_#S  
插入排序: I=N;F6  
D)yCuw{M:  
package org.rut.util.algorithm.support; @ y{i.G  
pHW Qk z(  
import org.rut.util.algorithm.SortUtil; 5 IK -V)  
/** uVO*@Kj+  
* @author treeroot Pc= S^}+  
* @since 2006-2-2 UKIDFDn6_  
* @version 1.0 cBgdBPDa  
*/ zjyj,jP  
public class InsertSort implements SortUtil.Sort{ 8{mQmG4  
h)O<bI8  
/* (non-Javadoc) WYHr'xJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `5y+3v~"  
*/ /(`B;?  
public void sort(int[] data) { /EJwO3MW  
int temp; (IAc*V~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 0SoU\/kUi  
} 5<%]6cx}  
} -jBk  
} fS( )F*J  
uO4kCK<7C  
} =1rq?M eX  
a$Lry?pb  
冒泡排序: @<GVY))R8  
(thDv rT@2  
package org.rut.util.algorithm.support; ?DAW~+,!7o  
=Mg/m'QI  
import org.rut.util.algorithm.SortUtil; S6.N)7y  
1|_8+)i;  
/** 8J&K_ JC^  
* @author treeroot .Yl*kG6r  
* @since 2006-2-2 oXCZpS  
* @version 1.0 +y+-~;5iv  
*/ {gSR49!Q  
public class BubbleSort implements SortUtil.Sort{ IIN"'7Z^R  
M6ol/.G[  
/* (non-Javadoc) *`}4]OGv.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {{FA "NW  
*/ -:O~J#D  
public void sort(int[] data) { >[4;K&$B  
int temp; myp}DI(  
for(int i=0;i for(int j=data.length-1;j>i;j--){ e/;1<5tfj  
if(data[j] SortUtil.swap(data,j,j-1); 4o:  
} 8&AHu  
} bLx70$  
} fk(l.A$  
} OG# 7Va  
#8 N9@  
} 3@k;"pFa<  
*fBI),bZa  
选择排序: 91oIxW  
=4RBHe8`  
package org.rut.util.algorithm.support; F",S}cK*MH  
\wmNeGC2  
import org.rut.util.algorithm.SortUtil; Ga4Ru  
X@,xwsM%tb  
/** SE0"25\_G  
* @author treeroot xg'FC/1LD  
* @since 2006-2-2 T=8> 0D^v5  
* @version 1.0 ulnG|3A9  
*/ RI#C r+/  
public class SelectionSort implements SortUtil.Sort { 4|+6a6  
D`r^2(WW  
/* l}>gG[q!  
* (non-Javadoc) /2,s-^  
* t7VXW{3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) N=) E$h  
*/ LK8K=AA3P  
public void sort(int[] data) { >\Qyg>Md]  
int temp; WMB~? EDhv  
for (int i = 0; i < data.length; i++) { JwzA'[tM  
int lowIndex = i; "RuH"~o  
for (int j = data.length - 1; j > i; j--) { tS2P|fl  
if (data[j] < data[lowIndex]) { ]xf lfZ  
lowIndex = j; v= b`kCH}  
} xg~ Baun  
} %m'd~#pze  
SortUtil.swap(data,i,lowIndex); MKd{ y~'  
} PI7M3\z  
} )J/,-p  
nq#k}Qx:  
} r4}:t$  
;{]%ceetcu  
Shell排序: P ;>8S:8  
V Iof4?i  
package org.rut.util.algorithm.support; C\7qAR\  
cdL$T6y  
import org.rut.util.algorithm.SortUtil; EP#3+B sH  
tzv&E0 |d  
/** ~ifo7,  
* @author treeroot UzVnC:  
* @since 2006-2-2 P,Fs7  
* @version 1.0 Aa* UV6(v  
*/ M*)}F  
public class ShellSort implements SortUtil.Sort{ B7qm;(?X&  
wi]|"\  
/* (non-Javadoc) |H&2[B"l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g/+P]c6/  
*/ 8U B-(~  
public void sort(int[] data) { c ?mCt0Cg  
for(int i=data.length/2;i>2;i/=2){ {z?e<  
for(int j=0;j insertSort(data,j,i); 'xAfcP[^  
} clQN@1] M  
} 7O{c>@\  
insertSort(data,0,1); /?l@7  
} P@ '<OI  
RE]u2R6Y  
/** bet?5Dk  
* @param data }E$^!q{  
* @param j wy&s~lpV,7  
* @param i  \p"`!n  
*/ b_*Y5"(*  
private void insertSort(int[] data, int start, int inc) { e:IUO1#  
int temp; =!_e(J  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lz X0B&:  
} f>nj9a5  
} _X{i hf  
} yG'5up  
Ip]-OVg  
} Y5fwmH,a-  
Ch607 i=  
快速排序: uzL)qH$b  
#_{3W-35*  
package org.rut.util.algorithm.support; ;5 cg<~t  
t^. U<M  
import org.rut.util.algorithm.SortUtil; c@)k#/[[b  
^- T!(P:  
/** IbQ3*  
* @author treeroot ~4o2!!^tI  
* @since 2006-2-2 Q9)/INh  
* @version 1.0 ,qJ/Jt$A  
*/  ^G{3x  
public class QuickSort implements SortUtil.Sort{ gq`gitu0  
xd\k;nq  
/* (non-Javadoc) w> `3{MTQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fB[I1Z  
*/ vINm2%*zJ  
public void sort(int[] data) { M(o?I}  
quickSort(data,0,data.length-1); l)`bm/k]V  
} y4s]*?Wz  
private void quickSort(int[] data,int i,int j){ ~a&s5E {  
int pivotIndex=(i+j)/2; ]O s!=rt  
file://swap *+h2,Z('a  
SortUtil.swap(data,pivotIndex,j); |cL'4I>b9  
tF SO"  
int k=partition(data,i-1,j,data[j]); F*rU=cu  
SortUtil.swap(data,k,j); LBT{I)-K  
if((k-i)>1) quickSort(data,i,k-1); 2SEfEkk  
if((j-k)>1) quickSort(data,k+1,j); <jXXj[M2  
# )-Kf  
} zghUwW|K  
/** z c N1i^   
* @param data EY;C5P4  
* @param i yWsV !Ub  
* @param j 1Qui.],c  
* @return PiXegh WH  
*/ kL,bM.;  
private int partition(int[] data, int l, int r,int pivot) { |XOD~Plo^  
do{ cP63q|[[  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j?4k{?x  
SortUtil.swap(data,l,r); W!4(EdT*Cq  
} ; k{w@L.@  
while(l SortUtil.swap(data,l,r); .r+u pY  
return l; zb Z0BD7e  
} \D>vdn"Lx  
]N}80*Rl  
} g@hg u   
Az[Yvu'<  
改进后的快速排序: ~]BxM9  
]&w>p#_C  
package org.rut.util.algorithm.support; si,fs%D&  
3{ i'8  
import org.rut.util.algorithm.SortUtil; +[Nc";Oy  
qT^R> p  
/** t a_!  
* @author treeroot 5mdn77F_  
* @since 2006-2-2 2/O/h  
* @version 1.0 ^yg`U(  
*/ i>i@r ;:|  
public class ImprovedQuickSort implements SortUtil.Sort { azKbGS/X  
k !Nl#.j  
private static int MAX_STACK_SIZE=4096; bIt%KG{PY6  
private static int THRESHOLD=10; ~|kre:j9  
/* (non-Javadoc) '0D2e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }Wjb0V  
*/ cx M=#Go  
public void sort(int[] data) { vBAds  
int[] stack=new int[MAX_STACK_SIZE]; |k3ZdM  
;=>4 '$8  
int top=-1; 8nw_Jatk1  
int pivot; .t|vwx  
int pivotIndex,l,r; U`sybtuBP'  
VU`aH9g3(  
stack[++top]=0; ykc$B5*  
stack[++top]=data.length-1; yg\bCvL&  
= 7pLU+ u  
while(top>0){ FI{9k(  
int j=stack[top--]; xTNWT_d  
int i=stack[top--]; #n5q$  
nBv|5$w:  
pivotIndex=(i+j)/2; F-g(Hk|v  
pivot=data[pivotIndex]; =qiX0JT  
l/0TNOA  
SortUtil.swap(data,pivotIndex,j); 9{_D"h}}  
!fUrDOM0E  
file://partition syhTOhOX  
l=i-1; Y}%=:Yt  
r=j; Q`}1 B   
do{ 52K_kB5  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); gE'b.04Y9i  
SortUtil.swap(data,l,r); .w2X24Mmb  
} is?H1V~8`$  
while(l SortUtil.swap(data,l,r); k ]C+/  
SortUtil.swap(data,l,j); V}(snG,  
|uVhfD=NG  
if((l-i)>THRESHOLD){ !4 `any  
stack[++top]=i; WL(u'%5  
stack[++top]=l-1; j*aN_UTr3  
} >:%YAR`  
if((j-l)>THRESHOLD){ u6h"=l {  
stack[++top]=l+1; +O>1 Ed  
stack[++top]=j; Es<id}`  
} 5-l cz)DO  
J&4LyIpQ  
} +ew2+2  
file://new InsertSort().sort(data); pv8"E?9,k  
insertSort(data); ,!U 5;  
} &o*/6X  
/** Vvu+gP'z.  
* @param data i2`i5&*  
*/ "mr;|$Y  
private void insertSort(int[] data) { aGvD  
int temp; TWE$@/9)g  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); C^I  h"S  
} ciO^2X  
} } XVz?6  
} Ym6zNb8 bQ  
LQ pUyqR  
} o mstJ9  
e!wBNcG2  
归并排序: f.,ozL3*  
6?OH"!b2-}  
package org.rut.util.algorithm.support; H)aeS F5  
'V=w?G 5  
import org.rut.util.algorithm.SortUtil; 2}:scag  
pJ[7m  
/** (5Q,d [B  
* @author treeroot d[;=X.fZ2  
* @since 2006-2-2  )TV4OT#  
* @version 1.0 ma.yI};$  
*/ zn|~{9>y  
public class MergeSort implements SortUtil.Sort{ {:M5t1^UC  
R4=n">>Q  
/* (non-Javadoc) i_T8Bfd:  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "2:]9j  
*/ VKRj 1LXz  
public void sort(int[] data) { p|VoIQY  
int[] temp=new int[data.length]; f;M7y:A8q,  
mergeSort(data,temp,0,data.length-1); }wzU<(Rx  
} Z{nJ\`  
RkP g&R;i  
private void mergeSort(int[] data,int[] temp,int l,int r){ v WKUV|  
int mid=(l+r)/2; FRpTYLA2  
if(l==r) return ; 5at\!17TY  
mergeSort(data,temp,l,mid); ;i|V++$_  
mergeSort(data,temp,mid+1,r); 6Ouy%]0$I3  
for(int i=l;i<=r;i++){ @4dB$QF`&  
temp=data; Xao 0cb.R  
} =BW>jD  
int i1=l; l(|@ dp  
int i2=mid+1; [H$37Hx !  
for(int cur=l;cur<=r;cur++){ gHc0n0ZV  
if(i1==mid+1) 5]n5nqz  
data[cur]=temp[i2++]; c%Ht; sK`*  
else if(i2>r) WMfu5x7e4  
data[cur]=temp[i1++]; /=co/}i  
else if(temp[i1] data[cur]=temp[i1++]; 8d.5D&  
else VaQqi>;\  
data[cur]=temp[i2++]; +M th+qgw  
} \P% E1c#  
} Enr8"+.(  
S;[g0j  
} i_8q!CL@{  
A9^t$Ii  
改进后的归并排序: bQc-ryC+.  
_:F0>=$  
package org.rut.util.algorithm.support; N q %@(K  
dX|(n.}  
import org.rut.util.algorithm.SortUtil; \5.36Se  
3D>syf  
/** apQ` l^  
* @author treeroot 7A@GN A  
* @since 2006-2-2 ]&%_Fpx  
* @version 1.0 C8i6ESmU  
*/ _/0vmgQ&  
public class ImprovedMergeSort implements SortUtil.Sort { !U38aHG  
!}fq%8"-  
private static final int THRESHOLD = 10; t>;u;XY!;  
>-fOkOWXy  
/* !_<zK:`-L  
* (non-Javadoc) Ig*68M<  
* 2:0'fNXop  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) V;$ME4B\{  
*/ $,R QA^gxW  
public void sort(int[] data) { 6rlafISvO  
int[] temp=new int[data.length]; lrg3n[y-l  
mergeSort(data,temp,0,data.length-1); ?.66B9Lld  
} p%A s6.  
|f+|OZY  
private void mergeSort(int[] data, int[] temp, int l, int r) { F8{"Rk}  
int i, j, k; :[f2iZ"  
int mid = (l + r) / 2; z^s/7Va[  
if (l == r) J WaI[n}  
return; u2crL5^z2)  
if ((mid - l) >= THRESHOLD) 7u/_3x1  
mergeSort(data, temp, l, mid); QfjgBJo%  
else -m*IpDi  
insertSort(data, l, mid - l + 1); RB7?T5G  
if ((r - mid) > THRESHOLD) mZLrU<)Y  
mergeSort(data, temp, mid + 1, r); ?g*#l d()  
else 3B|?{U~  
insertSort(data, mid + 1, r - mid); .|x\6 jf  
)i@j``P  
for (i = l; i <= mid; i++) { It.G-(  
temp = data; fW^\G2Fk  
} NUH;\*]8s  
for (j = 1; j <= r - mid; j++) { -7^?40A  
temp[r - j + 1] = data[j + mid]; KDD_WXGt~  
} wWV`k  
int a = temp[l]; oGz-lO{lt  
int b = temp[r]; ()L[l@m  
for (i = l, j = r, k = l; k <= r; k++) { =?fxPT[1K  
if (a < b) { Q; DN*  
data[k] = temp[i++]; (dZu&  
a = temp; RK%N:!f q=  
} else { CSF-2lSG  
data[k] = temp[j--]; FJ]BB4 K  
b = temp[j]; 6^ UQ{P1;  
} 6;rJIk@Fx=  
} z 3RD*3b  
} U1zcJ l^  
-olD!zKS  
/** oCD#Gmr  
* @param data `uL^!-  
* @param l 6 6S I  
* @param i E#'JYz@  
*/ zq ;YE  
private void insertSort(int[] data, int start, int len) { ^~iu),gu  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); *xY}?vSs  
} EXt?xiha?  
} sp%EA=: E  
} 0< i]ph  
} |#hj O3  
GF(<!PC  
堆排序: @lvvI<U  
}"k+e^0^  
package org.rut.util.algorithm.support; )*j>g38?  
r 334E  
import org.rut.util.algorithm.SortUtil; x3cno#  
f0UB? |  
/** |l5ol @2*  
* @author treeroot W$_}lE$  
* @since 2006-2-2 <Z^P8nu  
* @version 1.0 [,;h1m ~iX  
*/ fB .xjp?  
public class HeapSort implements SortUtil.Sort{ ~zdHJ8tYp  
$$my,:nH  
/* (non-Javadoc) <_X`D4g]XO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !V|%n(O"  
*/ v X=zqV  
public void sort(int[] data) { 5}J|YKyP  
MaxHeap h=new MaxHeap(); 34k}7k~n  
h.init(data); g5THkxp  
for(int i=0;i h.remove(); cBxBIC  
System.arraycopy(h.queue,1,data,0,data.length); /]pBcb|<  
} .Pz( 0Y  
x\/N09  
private static class MaxHeap{ 3]Jl\<0  
VXr'Z  
void init(int[] data){ j,@N0~D5  
this.queue=new int[data.length+1]; []opPQ 1  
for(int i=0;i queue[++size]=data; Vaj4p""\F  
fixUp(size); a~#MMl  
} cL/ 6p0S  
} fb8"hO]s  
6]`XW 0{C  
private int size=0; `$V7AqX(  
V4c$V]7  
private int[] queue; cRt[{ HE  
)"Ef* /+  
public int get() { kJ^)7_3  
return queue[1]; mM*jdm(!  
} cT8b$P5w  
R4xoc;b  
public void remove() { rLt`=bl&&U  
SortUtil.swap(queue,1,size--); ED9uKp<Wbv  
fixDown(1); rgth2y]  
} O3U6"{yJ)  
file://fixdown Jxyeh1z qB  
private void fixDown(int k) { w QV4[  
int j; 0}(ZW~& 1  
while ((j = k << 1) <= size) { @|yRo8|  
if (j < size %26amp;%26amp; queue[j] j++; ']'H8Y-M  
if (queue[k]>queue[j]) file://不用交换 }o>6 y>=  
break; zGm#er E  
SortUtil.swap(queue,j,k); kzZdYiC  
k = j; N*d )<8_  
} D%PrwfR  
} r&^LSTU0!  
private void fixUp(int k) { &c;@u?:@S  
while (k > 1) { 3$c Im+  
int j = k >> 1; CYIp 3D'k  
if (queue[j]>queue[k]) uU_0t;oR3  
break; Z0fl]3p  
SortUtil.swap(queue,j,k); \>8r)xC  
k = j; wI\ n%#  
} YX||\  
} n veHLHvC7  
/CpU.^V  
} DA>_9o/l  
L;wfTZa  
} SZGeF;N  
D{b*,F:&@)  
SortUtil: 0RaE!4)!;  
d E0 `tX  
package org.rut.util.algorithm; Oa[G #  
U g 'y  
import org.rut.util.algorithm.support.BubbleSort; wi{qN___  
import org.rut.util.algorithm.support.HeapSort; yrp;G_  
import org.rut.util.algorithm.support.ImprovedMergeSort; Tt,<@U[/}  
import org.rut.util.algorithm.support.ImprovedQuickSort; x3X^\ Ig  
import org.rut.util.algorithm.support.InsertSort; RTHe#`t  
import org.rut.util.algorithm.support.MergeSort; %Se@8d8  
import org.rut.util.algorithm.support.QuickSort; egOZ.oV  
import org.rut.util.algorithm.support.SelectionSort; :n1^Xw0q  
import org.rut.util.algorithm.support.ShellSort; ?Hb5<,1u3  
jzRfD3_s  
/** fgmu*\x<  
* @author treeroot Fpz)@0K;  
* @since 2006-2-2 zli@XZ#  
* @version 1.0 /h)_Q;35S;  
*/ ]Q?`|a+i  
public class SortUtil { H9d! -9I  
public final static int INSERT = 1; Mq!vu!  
public final static int BUBBLE = 2; :>@6\    
public final static int SELECTION = 3; W u4` 3  
public final static int SHELL = 4; cba  
public final static int QUICK = 5; 2`D1cX  
public final static int IMPROVED_QUICK = 6; Idy{(Q  
public final static int MERGE = 7; R`)^eqB  
public final static int IMPROVED_MERGE = 8; PEKU  
public final static int HEAP = 9; 0?]Y^:  
$L~?!u&N  
public static void sort(int[] data) { J>H$4t#HX  
sort(data, IMPROVED_QUICK); {'.[N79xP  
} =F!_ivV  
private static String[] name={ x,f=J4yco  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" pS1f y]  
}; c ilo8x`  
zv1#PfO@)  
private static Sort[] impl=new Sort[]{ 4G:?U6  
new InsertSort(), +<\)b(  
new BubbleSort(), TFIP>$*_C  
new SelectionSort(), (?9@nS  
new ShellSort(), Ts+S>$  
new QuickSort(), M Y2=lT  
new ImprovedQuickSort(), a>3#z2#  
new MergeSort(), O WJv<3  
new ImprovedMergeSort(), U Bo[iZ|%  
new HeapSort() F\!Va  
}; G5C=p:o{/  
.7h:/d Y:  
public static String toString(int algorithm){ 7Ya4>*B  
return name[algorithm-1]; Ya%-/u  
} 3WOm`<  
#FAy ]7/O  
public static void sort(int[] data, int algorithm) { /S}4J"  
impl[algorithm-1].sort(data); R2]2#3`  
} [?dsS$Y3  
Hr?_`:  
public static interface Sort { /< OoZf+[  
public void sort(int[] data); aP#nK  
} /(iq^  
XXx]~m  
public static void swap(int[] data, int i, int j) { 8'niew 5d  
int temp = data; Ia> 07av  
data = data[j]; b7thu5  
data[j] = temp; |OgtAI9  
} >I9w|z FA  
} *,hg+?lZ  
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