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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。 E[tEW0ub  
插入排序: @.l?V6g9T  
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package org.rut.util.algorithm.support; J4jL%5t  
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import org.rut.util.algorithm.SortUtil; HfA@tZ5q|U  
/** <%=@Ue  
* @author treeroot zN>tSdNkI-  
* @since 2006-2-2 o & kgRv[  
* @version 1.0 Rs53R$PIR  
*/ +6\1 d5  
public class InsertSort implements SortUtil.Sort{ $<d3g :  
WGI4DzKa  
/* (non-Javadoc) CxJH)H$  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) mH7Mch| m  
*/ h;t5v6["  
public void sort(int[] data) { b0[H{q-z{X  
int temp; yA^+<uz}  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); |=#uzp7*  
} eG%Q 3h  
} =R0#WMf$@  
} %$zX a%A  
dwmZ_m.  
} |"k+j_/+  
o '!WW  
冒泡排序: 5+Hw @CY3  
Tw!_=zy(Gw  
package org.rut.util.algorithm.support; )X5en=[)O  
(kZ2D  
import org.rut.util.algorithm.SortUtil; 7=pJ)4;ZA  
kT4Oal+4  
/** a'YK1QX  
* @author treeroot UYsyVY`Fm|  
* @since 2006-2-2 |H4f&& Wd  
* @version 1.0 Uf<IXx&;  
*/ H1a<&7  
public class BubbleSort implements SortUtil.Sort{ Rx.dM_S  
|gM@}!DL  
/* (non-Javadoc) P{o/ /M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) I] 0 D*z  
*/ K5:>  
public void sort(int[] data) { .u&GbM%Ga  
int temp; [TX5O\g![  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Un{9reX5  
if(data[j] SortUtil.swap(data,j,j-1); @M8vP H  
} [ h~#5x  
} 9vJ'9Z2\  
} .?;"iv+  
} #mH4\s  
Oh/2$72  
} F@jyTIS^  
Oo8"s+G  
选择排序: 4'U #<8  
Wf5ohXm>  
package org.rut.util.algorithm.support; m7NrS?7  
p^?]xD(  
import org.rut.util.algorithm.SortUtil; VT5o#NR{R  
uI+^8-HZ;  
/** IjnO2X  
* @author treeroot (xlA S  
* @since 2006-2-2 F!~oJ  
* @version 1.0 QOKE9R#Y  
*/ GB` G(a  
public class SelectionSort implements SortUtil.Sort { av4g/7=  
yZqX[U  
/* |-.r9;-b  
* (non-Javadoc) E:S (v  
* rd!4u14  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) g;t>jgX  
*/ l|'{Cb   
public void sort(int[] data) { 1g bqHxWI  
int temp; -+Ab[  
for (int i = 0; i < data.length; i++) { |(O _K(  
int lowIndex = i; ul[+vpH9  
for (int j = data.length - 1; j > i; j--) { \EOPlyf8x  
if (data[j] < data[lowIndex]) { U+'h~P'4  
lowIndex = j; e$=0.GWT  
} sboX<  
} %TA@-tK=  
SortUtil.swap(data,i,lowIndex); `=VN\W^&  
} m{ C  
} x /xd  
9ZXEy }q57  
} 3ew`e"s  
H?W8_XiN  
Shell排序: hF7#i_UN<  
4/M~#  
package org.rut.util.algorithm.support; _S;Fs|p_  
<R @w0b>  
import org.rut.util.algorithm.SortUtil;  v{ *#  
gDBdaxR<  
/** 9 M!J7 W  
* @author treeroot D}6~2j  
* @since 2006-2-2 CiTjRJ-ZW)  
* @version 1.0 `w/`qG:dK  
*/ GV(@(bI*  
public class ShellSort implements SortUtil.Sort{ DSc:>G  
p:CpY'KV_  
/* (non-Javadoc) z 2Rg`1B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )TV{n#n  
*/ R3ru<u>k&  
public void sort(int[] data) { sqP (1|9  
for(int i=data.length/2;i>2;i/=2){ Gtpl5gQH  
for(int j=0;j insertSort(data,j,i); i\z,)xp  
} .iXI oka  
} ]Y@B= 5e/  
insertSort(data,0,1); n*vzp?+Y  
} l~i&r?,]^  
% C.I2J`_  
/** Qfd4")zhG  
* @param data 13KfI  
* @param j uf<nVdC.  
* @param i y0f"UH/   
*/ yJG M"$  
private void insertSort(int[] data, int start, int inc) { l=?G"1  
int temp; / 1R` E9  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); t>izcO  
} 1# -=|:U  
} %`1 p8>n  
} m C &*K  
\C.s%m  
} w5tcO%+k1  
vS_Ji<W~E  
快速排序: v"N%w1`.e  
qL?`l;+  
package org.rut.util.algorithm.support; \OX;ZVb?5  
fNTe_akp  
import org.rut.util.algorithm.SortUtil; eJ O+MurO  
TDo!yQ  
/** oUG!=.1}K5  
* @author treeroot K:\db'``  
* @since 2006-2-2 (np60mX<  
* @version 1.0 cczV}m2)  
*/ z c7P2@  
public class QuickSort implements SortUtil.Sort{ B6gn(w3  
pwG"_|h  
/* (non-Javadoc) vRn"0Mzl8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^B`*4  
*/ zUCtH*  
public void sort(int[] data) { c^s%t:)K  
quickSort(data,0,data.length-1); 9C2DW,?  
} k-N` h  
private void quickSort(int[] data,int i,int j){ `;vJ\$-<  
int pivotIndex=(i+j)/2; u >W:SM  
file://swap / >q?H)6  
SortUtil.swap(data,pivotIndex,j); 1so9w89  
;+-Dg3  
int k=partition(data,i-1,j,data[j]); sF+Bu'9A  
SortUtil.swap(data,k,j); 5h6c W  
if((k-i)>1) quickSort(data,i,k-1); y-i6StJ  
if((j-k)>1) quickSort(data,k+1,j); eW>Y*l% B  
>wOqV!0<  
} e qzmEg  
/** OX!<{9o  
* @param data =2rkaBFC  
* @param i 1?}5.*j<  
* @param j 6)_svtg  
* @return ltH?Ew<]  
*/ ?ot7_vl  
private int partition(int[] data, int l, int r,int pivot) { 3!:?OUhx  
do{ EiP#xjn?c  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 1Ff Sqd  
SortUtil.swap(data,l,r); x'IYWo ]  
} (_aM26s  
while(l SortUtil.swap(data,l,r); gJUawK  
return l; *t3uj  
} &W@#p G  
WMw^zq?hd@  
} mv;;0xH  
-{ M(1vV(=  
改进后的快速排序: N& 683z  
`C+>PCO  
package org.rut.util.algorithm.support; O<KOsu1WW  
fCa*#ME  
import org.rut.util.algorithm.SortUtil; }cPH}[ $zF  
"0ZBPp1q  
/** -h?ed'e/zz  
* @author treeroot 6b6rM%B.oD  
* @since 2006-2-2 lUJ~_`D  
* @version 1.0 u{+z?N  
*/ 7I0[Ii  
public class ImprovedQuickSort implements SortUtil.Sort { w#Di  
#5b}"xK{  
private static int MAX_STACK_SIZE=4096; MaS"V`NI  
private static int THRESHOLD=10; p|f5w"QcH  
/* (non-Javadoc) e!hy,O{Pw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) o$%I{}9x  
*/ P/e6b .M  
public void sort(int[] data) { gXP)YN  
int[] stack=new int[MAX_STACK_SIZE]; aR0'$*3E  
M8p6f)l3  
int top=-1; Y;dQLZ CC  
int pivot; eF%>5  
int pivotIndex,l,r; cFF'ygJ/  
BV@xE  
stack[++top]=0; ={]tklND  
stack[++top]=data.length-1; []I _r=  
{^jk_G\ys  
while(top>0){ lI*uF~ 'D  
int j=stack[top--]; W8><  
int i=stack[top--]; 6PyODW;R/5  
P1>?crw  
pivotIndex=(i+j)/2; &4R -5i2a  
pivot=data[pivotIndex]; ]QJWqY  
![l`@NH[U  
SortUtil.swap(data,pivotIndex,j); 2C59fXfd  
vkgAI<  
file://partition q0y#Y  
l=i-1; Fk*C8  
r=j; zHu w[  
do{ \zMx~-2oN  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); _Q=h3(ZI  
SortUtil.swap(data,l,r); w$1B|7tX;2  
} Ht_7:5v&   
while(l SortUtil.swap(data,l,r); |JVp(Kx  
SortUtil.swap(data,l,j); #P)(/>nF  
u P&<  
if((l-i)>THRESHOLD){ Mr6q7  
stack[++top]=i; l?Qbwv}  
stack[++top]=l-1; HV}*}Ty  
} OB5t+_ s  
if((j-l)>THRESHOLD){ 4;D>s8dgG  
stack[++top]=l+1; !bGMVw6_  
stack[++top]=j; :% m56  
} }xG~ a=,  
y|Vwy4tK9  
} PC55A1(T  
file://new InsertSort().sort(data); =`W#R  
insertSort(data); =f\BAi  
} E WNm }C9  
/** :|PI_ $4H  
* @param data .wvgH i  
*/ mDX UF~G[  
private void insertSort(int[] data) { *:tfz*FG$G  
int temp; tB/'3#o  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ,\^RyHg  
} uJ9 hU`h  
} 4ynGXJmMlR  
} U6K!FOND  
h( MNH6 B1  
} `\Ye:$q  
]~d!<x#+  
归并排序: #-{^={p "  
/)/>/4O  
package org.rut.util.algorithm.support; &(/QJ`*8  
mF`%Z~}b  
import org.rut.util.algorithm.SortUtil; ';iLk[  
gH<A.5 xy  
/** ^P~NE#p5  
* @author treeroot eH' J  
* @since 2006-2-2 'eDV-cB  
* @version 1.0 %RD%AliO}K  
*/ t1rAS.z&  
public class MergeSort implements SortUtil.Sort{ + X0db  
-hpC8YS  
/* (non-Javadoc) )gPkL r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) !'f.g|a  
*/ ,%4~ulKMn  
public void sort(int[] data) { W)p?cK`  
int[] temp=new int[data.length]; <4,LTB]9-  
mergeSort(data,temp,0,data.length-1); g7@.Fa.u'!  
} 2{oU5e  
"^&Te%x_b  
private void mergeSort(int[] data,int[] temp,int l,int r){ ]GH_;  
int mid=(l+r)/2; *h4x`luJ  
if(l==r) return ; S*w;$`Y  
mergeSort(data,temp,l,mid); >4iVVs  
mergeSort(data,temp,mid+1,r); 9~ r YLR(v  
for(int i=l;i<=r;i++){ 8L _]_  
temp=data; M%"{OHj!o  
} gBd@4{y6C.  
int i1=l; dO!5` ]  
int i2=mid+1; m>&:)K}m  
for(int cur=l;cur<=r;cur++){ * G0I2  
if(i1==mid+1) $-p#4^dg  
data[cur]=temp[i2++]; F|! ib5  
else if(i2>r) F7lzc)  
data[cur]=temp[i1++]; 56 [+;*  
else if(temp[i1] data[cur]=temp[i1++]; 6 H' W]T&  
else \I+#M-V  
data[cur]=temp[i2++]; =PAsyj  
} q:vc ;y  
} W`gzMx  
fZNe[|  
} k#DMd9  
mr<camL5  
改进后的归并排序: _,bDv`>Ra  
C<yjGt VD  
package org.rut.util.algorithm.support; G^&P'*  
b 67l\L  
import org.rut.util.algorithm.SortUtil; cu )w6!f  
wq = Ef  
/** .ovG_O  
* @author treeroot "?r_A*U  
* @since 2006-2-2 \?~cJMN  
* @version 1.0 Xcw 6mpLt  
*/ NGL,j\(~7  
public class ImprovedMergeSort implements SortUtil.Sort { @*^%^ P  
`FHKQS5  
private static final int THRESHOLD = 10; ?my2dd,|  
)=5 ,S~IT  
/* )m<CmYr2  
* (non-Javadoc) =)IV^6~b  
* DtglPo_(  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -a`P W  
*/ H}PZJf_E  
public void sort(int[] data) { lqZUU92;  
int[] temp=new int[data.length]; wHE1Jqpo  
mergeSort(data,temp,0,data.length-1); eiJ~1H X)  
} {jOV8SVL  
DTo P|P  
private void mergeSort(int[] data, int[] temp, int l, int r) { <Oihwr@5<  
int i, j, k; I'e`?H t  
int mid = (l + r) / 2; %shCqS  
if (l == r) D]NJ ^.X  
return; k4+Q$3"  
if ((mid - l) >= THRESHOLD) Ux+UcBKm-  
mergeSort(data, temp, l, mid); aU?HIIA  
else &\L\n}i-  
insertSort(data, l, mid - l + 1); Bh5z4  
if ((r - mid) > THRESHOLD) 2f0qfF  
mergeSort(data, temp, mid + 1, r); H J0Rcw%  
else (Q F-=o  
insertSort(data, mid + 1, r - mid); A# Ne07d  
?4H>1Wkb  
for (i = l; i <= mid; i++) { K %.>o  
temp = data; XkEE55#>|  
} jSdW?IH  
for (j = 1; j <= r - mid; j++) { 3F?_{A  
temp[r - j + 1] = data[j + mid]; !~ fy".|x  
} M+GtUE~"  
int a = temp[l]; F42?h:y8I  
int b = temp[r]; QQ\\:]iM  
for (i = l, j = r, k = l; k <= r; k++) { k<QZ_*x}G  
if (a < b) { f?W"^6Df  
data[k] = temp[i++]; 5KC Zg'h  
a = temp; *_H^]wNJG  
} else { aK?PK }@  
data[k] = temp[j--]; $*c!9Etl4  
b = temp[j]; @BoZZ  
} $VnPs!a  
} .kp3<.  
} Kdr} 7#c  
IXC2w *'m  
/** ; fxrOfb  
* @param data i<-a-Z+^  
* @param l 4;V;8a\A  
* @param i NEW0dF&)  
*/ O6$n VpD3  
private void insertSort(int[] data, int start, int len) { t-?#x   
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); w" ,ab j  
} 8T}Dn\f  
} h )h%y)1  
} ra}t#Xt`  
} Q=h37]U+  
Rgb&EnVW  
堆排序: h^"OC$  
4 g^oy^~  
package org.rut.util.algorithm.support; Qz/1^xy  
{H%1sI  
import org.rut.util.algorithm.SortUtil; ;]Bkw6 o  
`@|Kx\y4=j  
/** ?AJE*=b  
* @author treeroot 0^rDf L  
* @since 2006-2-2 QAh6!<.;@  
* @version 1.0  6,;7iA]  
*/ FrryZe=  
public class HeapSort implements SortUtil.Sort{ @^kt[$X;  
KN9e""  
/* (non-Javadoc) Acib<Mi2!-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5 MD=o7O^  
*/ p-o!K\o-1  
public void sort(int[] data) { L5yv}:.U  
MaxHeap h=new MaxHeap(); C| Vz `FY  
h.init(data); o2M4?}TpIV  
for(int i=0;i h.remove(); Y:} !W  
System.arraycopy(h.queue,1,data,0,data.length); \@HsMV2+zN  
} )$e_CJ}9e  
7cJh^M   
private static class MaxHeap{ w(Hio-l=  
42mZ.,<  
void init(int[] data){ uKocEWB=/F  
this.queue=new int[data.length+1]; H '(Ky  
for(int i=0;i queue[++size]=data; Bys_8x}  
fixUp(size); @fxDe[J:  
}  @Iy&Qo  
} ;v^1V+1:z  
J  4OgV?  
private int size=0; ,a /<t"  
Cn>RUGoUsI  
private int[] queue; D#G(&<Q  
Lcpz(W ^  
public int get() { Xi!`+N4  
return queue[1];  G(1y_t  
} R s)Nz< d  
dLn Md0  
public void remove() { 9!sR}  
SortUtil.swap(queue,1,size--); Ki:.^  
fixDown(1); , HE +|y#  
} 5b^`M  
file://fixdown mlD 1 o  
private void fixDown(int k) { d=_Wgz,d  
int j; 9xm'0 '  
while ((j = k << 1) <= size) { d2e4=/ A%  
if (j < size %26amp;%26amp; queue[j] j++; Zr.6J*&!  
if (queue[k]>queue[j]) file://不用交换 `upxM0gc  
break; <..|:0Q&~  
SortUtil.swap(queue,j,k); 1v^eXvY  
k = j; \E<t'\>@X  
} [10;Mg  
} Iq[Z5k(K  
private void fixUp(int k) { 1]<w ZV}.  
while (k > 1) { `vFYe N;  
int j = k >> 1; gP?uLnzvi  
if (queue[j]>queue[k]) )W& $FU4JK  
break;  1ZF>e`t8  
SortUtil.swap(queue,j,k); &_N$S2  
k = j; mt(2HBNoz  
} PHh&@:  
} :"oQ _bLT  
xi =\]  
} (;@\gRL  
E5J2=xVW#  
} BL^8gtdn  
'sCj|=y2Qc  
SortUtil: c$>$2[*=  
AGdFJ>/  
package org.rut.util.algorithm; ,y5 7tY  
jw"]U jub  
import org.rut.util.algorithm.support.BubbleSort; 3 O)^Hq+9  
import org.rut.util.algorithm.support.HeapSort; nBA0LIb  
import org.rut.util.algorithm.support.ImprovedMergeSort; ?{ 0MF  
import org.rut.util.algorithm.support.ImprovedQuickSort; {yPiBu  
import org.rut.util.algorithm.support.InsertSort; /=bg(?nX  
import org.rut.util.algorithm.support.MergeSort; CI )89`  
import org.rut.util.algorithm.support.QuickSort; k7gm)}RKcu  
import org.rut.util.algorithm.support.SelectionSort; DJmT]Q]o)  
import org.rut.util.algorithm.support.ShellSort; 0cwb^ffN  
9a*}&fL[  
/** @N-P[.qL"  
* @author treeroot ^<}eONa  
* @since 2006-2-2 /M1 /  
* @version 1.0 NJ;D Qv  
*/ u`]J]gE  
public class SortUtil { 7O,y%NWaK  
public final static int INSERT = 1; }RvP*i  
public final static int BUBBLE = 2; oe8sixZ[  
public final static int SELECTION = 3; L/VlmN_v>s  
public final static int SHELL = 4; $C;)Tlh  
public final static int QUICK = 5; dSkW[r9Z%l  
public final static int IMPROVED_QUICK = 6; E?z~)0z2`  
public final static int MERGE = 7; ^at X/  
public final static int IMPROVED_MERGE = 8; cN5,\I.  
public final static int HEAP = 9; !A\Qwg>  
\MA 4>  
public static void sort(int[] data) { $bd&$@sA  
sort(data, IMPROVED_QUICK); azxGUS_i<  
} #Wz7ju;  
private static String[] name={ w)hH8jx{  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 8"zFTP*;u  
}; d,_Ky#K5b  
n!r<\4I  
private static Sort[] impl=new Sort[]{ _U"9#<  
new InsertSort(), Whd2mKwiO  
new BubbleSort(), H7 xyK  
new SelectionSort(), $#k8xb  
new ShellSort(), /8(\AuDT  
new QuickSort(), QyGTm"9l  
new ImprovedQuickSort(), GYX/G>-r  
new MergeSort(), mct$.{~  
new ImprovedMergeSort(), oA ;sP'  
new HeapSort() O{^ET:K@  
}; k-$5H~(PZ  
LtxeT .  
public static String toString(int algorithm){ vt`V<3  
return name[algorithm-1]; cF[L6{Oe  
} FC:+[.fi  
R*l#[D5A  
public static void sort(int[] data, int algorithm) { 3:XF7T  
impl[algorithm-1].sort(data); 7ktSj}7W]  
} JYt)4mOo  
Vg 6/1I  
public static interface Sort { K|q5s]4I  
public void sort(int[] data); 0.9%m7.m  
} i58&o@.H<u  
VuOZZ7y  
public static void swap(int[] data, int i, int j) { =peodj^  
int temp = data; fr\"MP  
data = data[j]; H}R/_5g  
data[j] = temp; fq@r6\TI  
} :/c40:[  
} ZB)`*z>*  
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