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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。 Ffp<|2T2_  
插入排序: fKZgAISF  
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package org.rut.util.algorithm.support; 2DbM48\E  
+4%: q~C  
import org.rut.util.algorithm.SortUtil; vs~lyM/  
/** r 2L=gI  
* @author treeroot <<[hZ$.  
* @since 2006-2-2 'U'#_mYG  
* @version 1.0 wam- =3W  
*/ 86,$ I+  
public class InsertSort implements SortUtil.Sort{ uuMHD{}?}  
S0<m><|kl  
/* (non-Javadoc) Vz,2_QJ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hu+% X.F4  
*/ lm;G8IP`  
public void sort(int[] data) { ~ U,a?LR/  
int temp; CAD:ifV  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); X@n\~[.B  
} AE"E($S`  
} L/R ES  
} @)YQiE$  
XUyoZl?  
} a \PvRW*I  
\7Fkeo+  
冒泡排序: E5b JIC(  
p-t*?p C  
package org.rut.util.algorithm.support; +2+wNFU  
.4NQ2k1io  
import org.rut.util.algorithm.SortUtil; op%?V :  
(\6R"2  
/** dnP3{!"b  
* @author treeroot on q~wEr  
* @since 2006-2-2 cOr@dUSL  
* @version 1.0 SAEV "  
*/ 32sb$|eQq  
public class BubbleSort implements SortUtil.Sort{ KVrK:W--p  
mTW@E#)n  
/* (non-Javadoc) `1[GY){?)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bu2'JIDR  
*/ t[ZumQ@HC  
public void sort(int[] data) { !F|iL  
int temp; k5@_8Rc  
for(int i=0;i for(int j=data.length-1;j>i;j--){ dIR6dI   
if(data[j] SortUtil.swap(data,j,j-1); =abth6#)  
} )*Qa 9+ :  
} d^w*!<8  
} : a4FO  
} F& 'HZX  
,T|%vqbmw  
} &Tf R].  
Mwdw7MZ"S  
选择排序: 69v[* InSd  
] cv|A^  
package org.rut.util.algorithm.support; 0+\~^  
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import org.rut.util.algorithm.SortUtil; ",ic" ~  
Nv iPrp>c  
/** ZREAEGi{  
* @author treeroot H5N(MihT  
* @since 2006-2-2 dIo|i,-  
* @version 1.0 nAp7X-t  
*/ 4D/mm(2d$  
public class SelectionSort implements SortUtil.Sort { kPVP+}cA  
RhJL`>W`  
/* swDSV1alMB  
* (non-Javadoc) 6L6Lk  
* Hf/2KYZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lE54RX}e4  
*/ ?ExfxR!~  
public void sort(int[] data) { \\D~Yg\#  
int temp; A*h)p@3t<  
for (int i = 0; i < data.length; i++) { [^gSWU  
int lowIndex = i; bz~-uHC  
for (int j = data.length - 1; j > i; j--) { _l?5GLl_F$  
if (data[j] < data[lowIndex]) { f-\l<o(  
lowIndex = j; Z v=p0xH  
} ]'aG oR  
} -BV&u(  
SortUtil.swap(data,i,lowIndex); g(:y_EpmLH  
} B%Yb+M&K  
} #oYX0wvl  
WPE@yI(  
} >NE]TZ.F  
b>%I=H%g  
Shell排序: LwUvM  
@T1 >%oi  
package org.rut.util.algorithm.support; MjU>qx::  
uF T\a=  
import org.rut.util.algorithm.SortUtil; $gZ|=(y&r  
1ezQzc2-R  
/** ?<  w +{  
* @author treeroot _<.R\rX&  
* @since 2006-2-2 +V |]:{3W  
* @version 1.0 Y@.> eS  
*/ CRWO R pP  
public class ShellSort implements SortUtil.Sort{ LM _4.J  
d*3R0Q|#{  
/* (non-Javadoc) CSU>nIE0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7k3":2 :  
*/ g{$&j*Q9  
public void sort(int[] data) { >[xQUf,p  
for(int i=data.length/2;i>2;i/=2){ I{cn ,,8  
for(int j=0;j insertSort(data,j,i); ecf7g)+C  
} xDr *|d  
} 1'_OM h*;  
insertSort(data,0,1); t*Q12Q  
} fWm;cDM H  
wq]nz!  
/** y i@61XI  
* @param data dl{3fldb  
* @param j L761m7J]B  
* @param i lQ+-g#`  
*/ >5 5/@+^  
private void insertSort(int[] data, int start, int inc) { Q)a*bPz  
int temp; *pasI.2s#  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); N=+Up\h  
} 1*-58N*  
} n6o}$]H  
} 71/6=aq>n  
<E\BKC%M  
} sZ4H\  
tOko %vY8  
快速排序: <1jiU%!w  
2N,*S   
package org.rut.util.algorithm.support; 0\Oeo8<7)~  
R1q04Zj{2  
import org.rut.util.algorithm.SortUtil; gieX`}  
U |4% ydG  
/** *gT TI;:  
* @author treeroot n(o Jb  
* @since 2006-2-2 orU4{.e  
* @version 1.0 1g/mzC   
*/ Bv=Z*"Fv  
public class QuickSort implements SortUtil.Sort{ rfPJBD{Ve  
*pWswcV/  
/* (non-Javadoc) !E7/:t4  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ta[}k/zW  
*/ @/7Rp8Fr  
public void sort(int[] data) { g*]<]%Py"  
quickSort(data,0,data.length-1); N]=.I   
} uPp(l4(+  
private void quickSort(int[] data,int i,int j){ ohh 1DsB  
int pivotIndex=(i+j)/2; OQsH,'  
file://swap cA Lu  
SortUtil.swap(data,pivotIndex,j); RZ.5:v6  
)US) -\^  
int k=partition(data,i-1,j,data[j]); nEn2!)$  
SortUtil.swap(data,k,j); c&_3"2:  
if((k-i)>1) quickSort(data,i,k-1); "iydXV=Q  
if((j-k)>1) quickSort(data,k+1,j); vMI\$E &  
[}AcCXg`L  
} 3?}SXmA'@  
/** |F=^Cu,  
* @param data O>>8%=5Q  
* @param i yi%B5KF~Al  
* @param j uIPR*9~6o  
* @return p{U8z\  
*/ kdo)y(fn@  
private int partition(int[] data, int l, int r,int pivot) { FVpe*]  
do{ 7vWB=r>5@  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ><DE1tG  
SortUtil.swap(data,l,r); a[JgR/E@x  
} P~*fZ)\}F@  
while(l SortUtil.swap(data,l,r); qj/P4*6E  
return l; ~\_E%NR yA  
} :dj@i6  
RcE%?2l D  
} }Ag2c; aaq  
lwB!ti  
改进后的快速排序: s-DtkO  
w])Sz*J  
package org.rut.util.algorithm.support; &S{F"z  
oc?VAF  
import org.rut.util.algorithm.SortUtil; &KB{,:)?  
U9q*zP_jV  
/** c*W$wr  
* @author treeroot 5u8Sxfm",  
* @since 2006-2-2 }qg!Um0  
* @version 1.0 Tld{b  
*/ >w'6ZDA*X  
public class ImprovedQuickSort implements SortUtil.Sort { n#R!`*[  
LSs={RD2+p  
private static int MAX_STACK_SIZE=4096; Owr`ip\  
private static int THRESHOLD=10; G@;aqe[dB  
/* (non-Javadoc) p[$I{F*a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +(<f(]bG  
*/ Nf~<xK  
public void sort(int[] data) { -Z@ p   
int[] stack=new int[MAX_STACK_SIZE]; oa4}GNH  
r5"/EMieh  
int top=-1; E0|aI4S4  
int pivot; 83 n: h08  
int pivotIndex,l,r; N$+"zJmw&  
0Nfj}sXCWE  
stack[++top]=0; %|I|Mc  
stack[++top]=data.length-1; t Z%?vY~!  
4>W`XH  
while(top>0){ K$Ph$P@   
int j=stack[top--]; izxCbbg  
int i=stack[top--]; I5~DC  
o?3R HP47  
pivotIndex=(i+j)/2; cQR1v-Xt  
pivot=data[pivotIndex]; +EB# #  
bODl q  
SortUtil.swap(data,pivotIndex,j); uu:)jxi  
Dn[1BWM/7  
file://partition `4=b|N+b"  
l=i-1; JjmL6(*ui  
r=j; ymzm x$o=  
do{ S;NXOsSu  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ![ QQF|  
SortUtil.swap(data,l,r); =bDG|:+  
} "OPUGwf  
while(l SortUtil.swap(data,l,r); =~h54/#[I  
SortUtil.swap(data,l,j); s*IfXv  
6~}H3rvO}  
if((l-i)>THRESHOLD){ kpdFb7>|  
stack[++top]=i; |h7v}Y  
stack[++top]=l-1; A=$oYBB  
} W)#`4a^xj7  
if((j-l)>THRESHOLD){ 5c"kLq6r  
stack[++top]=l+1; E;qwoTmul  
stack[++top]=j; 1bBK1Uw  
} JvDsr0]\#  
WdT|xf.Q&  
} _(hwU>.  
file://new InsertSort().sort(data); vf2K2\fn  
insertSort(data); |(S W  
} 7'|PHQ?S  
/** j#&  
* @param data >=V+X"\Z  
*/ ZwMw g t  
private void insertSort(int[] data) { <-F"&LI{<  
int temp; pV7Gh`<y  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); wGvgMZ]?'  
} AVp [gr  
} wLtTC4D  
} H[D/Sz5`  
]c)SVn$6  
} BGX@n#:  
}]I?vyQ#V  
归并排序: $<v_Vm?6d  
K288&D|1WU  
package org.rut.util.algorithm.support; :~(im_r  
!A!\S/x4  
import org.rut.util.algorithm.SortUtil; K>[H@|k\k  
5)UmA8"zVB  
/** K\b O[J  
* @author treeroot mw[4<vfB0a  
* @since 2006-2-2 +a/o)C{  
* @version 1.0 W(aRO  
*/ -e~U u  
public class MergeSort implements SortUtil.Sort{ @m V C  
{ rT`*P~  
/* (non-Javadoc) u3vmC:bV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >v[(w1?rX  
*/ ^mi4q[PM  
public void sort(int[] data) { A-5 +#  
int[] temp=new int[data.length]; +&OqJAu  
mergeSort(data,temp,0,data.length-1); Q(UGwd1  
} S F>D:$a  
.jp]S4~  
private void mergeSort(int[] data,int[] temp,int l,int r){ \#aVu^`eX  
int mid=(l+r)/2; ?^~"x.<nr  
if(l==r) return ; yUO|3ONT  
mergeSort(data,temp,l,mid); { ZX C%(u  
mergeSort(data,temp,mid+1,r); PoJ$%_a}  
for(int i=l;i<=r;i++){ $hSZ@w|IF  
temp=data; :,m)D775S  
} BuTIJb+Q\  
int i1=l; H |UL5<:]D  
int i2=mid+1; %z~U@Mka  
for(int cur=l;cur<=r;cur++){ ^d80\PXz  
if(i1==mid+1) :eW~nI.Vc  
data[cur]=temp[i2++]; hli 10p$  
else if(i2>r) #-T.@a1X  
data[cur]=temp[i1++]; /BM1AV{s6  
else if(temp[i1] data[cur]=temp[i1++]; Nz*sD^SJa  
else |Vi&f5p,@  
data[cur]=temp[i2++]; n#Roz5/U  
} (:QQ7xc{}  
} 4_+Pv6  
K//T}-Uub  
} VA'X!(Cv  
,:4DN&<  
改进后的归并排序: t1jlxK  
ht)nx,e=  
package org.rut.util.algorithm.support; m>ycN  
s&hA  
import org.rut.util.algorithm.SortUtil; S |>$0P4W(  
 7E`(8i  
/** 5L}>+js2  
* @author treeroot 5lnSa+_/f  
* @since 2006-2-2 ulf/C%t,R  
* @version 1.0 <z uE=0P~%  
*/ ex \W]5  
public class ImprovedMergeSort implements SortUtil.Sort { zpqGh  
_}OJPahw  
private static final int THRESHOLD = 10; GQ2PmnV +  
@b\ S.  
/* .vS6_  
* (non-Javadoc) ]TgP!M&q  
* y?n2`l7f  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =`~Z@IbdI  
*/ t3t0vWE<,  
public void sort(int[] data) { i1I>RK  
int[] temp=new int[data.length]; ~9r!m5ws  
mergeSort(data,temp,0,data.length-1); GWhAjL/N  
} $-Pqs ^g  
W[E3P,XS  
private void mergeSort(int[] data, int[] temp, int l, int r) { xwnoZ&h  
int i, j, k; :KSor}t  
int mid = (l + r) / 2; JhCkkw  
if (l == r) N4 mJU'_{  
return; s;2/Nc   
if ((mid - l) >= THRESHOLD) ~59`S#ax/l  
mergeSort(data, temp, l, mid); M+;P?|a  
else rA1r#ksQ  
insertSort(data, l, mid - l + 1); u=;nU(]M '  
if ((r - mid) > THRESHOLD) !?o$-+a|  
mergeSort(data, temp, mid + 1, r); ^YR|WKY  
else oD#>8Aws  
insertSort(data, mid + 1, r - mid); @f{_=~+  
Hp}  
for (i = l; i <= mid; i++) { PKR $I  
temp = data; ^2^|AXNES  
} 5!F\h'E  
for (j = 1; j <= r - mid; j++) { ZBmXaP[9  
temp[r - j + 1] = data[j + mid]; #RM3^]h  
} F|l`YtZZd  
int a = temp[l]; =6L*!JP<  
int b = temp[r]; `{U%[$<[W  
for (i = l, j = r, k = l; k <= r; k++) { wD ],{y  
if (a < b) { nS+FX& _  
data[k] = temp[i++]; *Z`XG_s5  
a = temp; hiRR+`L%  
} else { hyb +#R  
data[k] = temp[j--]; ;DD>k bd  
b = temp[j]; Q_aqX(ig  
} >u5g?yzw  
} 58&{5YpS  
} E8-fW\!F  
d)0LVa(  
/** (+UmUx=  
* @param data LR3`=Z9  
* @param l ~#"7,rQp  
* @param i )ojx_3j8  
*/ N xb\[  
private void insertSort(int[] data, int start, int len) { _t|G@D{   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +Cf0Y2*@hM  
} YxEbg(Y  
} qA/#IUi)1  
} mT6q}``vtG  
} /e|[SITe  
8Y\OCwO  
堆排序: HX3D*2v":  
],\sRQbv&  
package org.rut.util.algorithm.support; IAP/G5'Q  
C[xJU6z  
import org.rut.util.algorithm.SortUtil; 1t~FW-:  
o)tKH@`vE  
/** ,$h(fM8GC  
* @author treeroot =!(*5\IM  
* @since 2006-2-2 X_u@D;$  
* @version 1.0 ;h9-}F  
*/ r+{d!CHq}  
public class HeapSort implements SortUtil.Sort{ 4L=$K2R2r  
ZU-4})7uSB  
/* (non-Javadoc) 3J'73)y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) LAv:+o(m/  
*/ "Su b4F`  
public void sort(int[] data) { 4<T*i{[  
MaxHeap h=new MaxHeap(); SqXy;S@  
h.init(data); %'L].+$t  
for(int i=0;i h.remove(); djsz!$  
System.arraycopy(h.queue,1,data,0,data.length); "H>r-cyh  
} jq57C}X}2  
E3S%s  
private static class MaxHeap{ |5=~(-I>@  
GS ;HtUQ  
void init(int[] data){ 'y4zBLY  
this.queue=new int[data.length+1]; g.I(WJX0  
for(int i=0;i queue[++size]=data; ]By0Xifew  
fixUp(size); |*^8~u3J"  
} uW}Hvj;0a*  
} URYZV8=B~  
q.=^i z&m  
private int size=0; =oE_.ux\  
{ExII<=6  
private int[] queue; 9ZDVy7m\i-  
FZe:co8Mu  
public int get() { *.," N}  
return queue[1]; O87"[c`>  
} { p1lae  
J| SwQE~  
public void remove() { 6OL41g'  
SortUtil.swap(queue,1,size--); lSH ZV Fd  
fixDown(1); XkPv*%Er8  
} EKZA5J7kn  
file://fixdown |',M_ e]  
private void fixDown(int k) { m`hGDp3  
int j; f).*NX  
while ((j = k << 1) <= size) { CifA,[l34  
if (j < size %26amp;%26amp; queue[j] j++; x3Nkp4=Xd  
if (queue[k]>queue[j]) file://不用交换 4|[<e-W  
break; U/ ?F:QD4  
SortUtil.swap(queue,j,k); NWEhAj<w  
k = j; UT3bd,,  
} \un sh^M  
} UTZ776`S&X  
private void fixUp(int k) { `6&`wKz  
while (k > 1) { ~Fy`>*  
int j = k >> 1; P}HC(S1  
if (queue[j]>queue[k]) Y!SE;N&  
break; \V]t!mZ-}l  
SortUtil.swap(queue,j,k); tY/En-&t  
k = j; JC=dYP}  
} di7A/ B  
} Da-u-_~  
B@ -|b  
} hZcmP"wgC1  
'gCJ[ce  
} SOVj Eo4'3  
8tU>DJ}0  
SortUtil: yahAD.Xuo@  
H#OYw#L"u  
package org.rut.util.algorithm; jDR')ascn  
FJ{=2]x|  
import org.rut.util.algorithm.support.BubbleSort; jz*0`9&_  
import org.rut.util.algorithm.support.HeapSort; (~h7rAEc  
import org.rut.util.algorithm.support.ImprovedMergeSort; k@S)j<  
import org.rut.util.algorithm.support.ImprovedQuickSort; !X-9Ms}(d  
import org.rut.util.algorithm.support.InsertSort; elu=9d];@  
import org.rut.util.algorithm.support.MergeSort; iHPUmTus--  
import org.rut.util.algorithm.support.QuickSort; 4Rx~s7l  
import org.rut.util.algorithm.support.SelectionSort; <PX.l%  
import org.rut.util.algorithm.support.ShellSort; +jUgx;u,  
]DO&x+Rb  
/** e,(a6X  
* @author treeroot t<Ot|Ex  
* @since 2006-2-2 42&v % ;R  
* @version 1.0 ML=eL*}l  
*/ zX98c  
public class SortUtil { `?l3Ct*  
public final static int INSERT = 1; 6D|p Qs  
public final static int BUBBLE = 2; /hL\,x 2  
public final static int SELECTION = 3; 2`EVdl7B]  
public final static int SHELL = 4; 1B 5:s,Oyj  
public final static int QUICK = 5; tAERbiH  
public final static int IMPROVED_QUICK = 6; '3^Q14`R  
public final static int MERGE = 7; ioxbf6{  
public final static int IMPROVED_MERGE = 8; 3A_G=WaED  
public final static int HEAP = 9; \^jjK,OK  
C0QM#"[  
public static void sort(int[] data) { Q^L) Vp"  
sort(data, IMPROVED_QUICK); 3f"C!l]Xu  
} + ~ "5!  
private static String[] name={ \/ErPi=g  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" AotCX7T2T  
}; 5Q W}nRCZ  
ZWS2q4/S  
private static Sort[] impl=new Sort[]{ 802H$P^ps  
new InsertSort(), V C-d0E0  
new BubbleSort(), =>qTNh*'  
new SelectionSort(), A{N\)  
new ShellSort(), eNbpwne  
new QuickSort(), 2VA!&`I  
new ImprovedQuickSort(), [KSH~:h:NR  
new MergeSort(), )qv2)a!H  
new ImprovedMergeSort(), Tg0CE60"  
new HeapSort() yrnv!moc%t  
}; `rlk|&T1  
X3',vey  
public static String toString(int algorithm){ dxK9:IX  
return name[algorithm-1]; k=$AhT=e}n  
} 1yM r~Fo  
7VAJJv3  
public static void sort(int[] data, int algorithm) { b5<okICD  
impl[algorithm-1].sort(data); 22&;jpL'?  
} lj4o#^lC  
.1#kD M  
public static interface Sort { iG#}`  
public void sort(int[] data); vQ1 v# Z  
} )"| ||\Iv  
2 o4^  
public static void swap(int[] data, int i, int j) { 2}vNSQvG  
int temp = data; d$G}iJ8$mp  
data = data[j]; 1y(UgEg   
data[j] = temp; \F{:5,Du)  
} :5b0np!  
} ~E)fpGJ  
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