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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。 Kg>B$fBx)  
插入排序: uE(5q!/  
~uZ9%UB_m  
package org.rut.util.algorithm.support; G;u~H<  
MmvOyK NZF  
import org.rut.util.algorithm.SortUtil; OAW_c.)5D  
/** B]<N7NYn1  
* @author treeroot =FIZh}JD  
* @since 2006-2-2 rKslgZhQ  
* @version 1.0 @jMo/kO/A  
*/ >yT1oD0+x  
public class InsertSort implements SortUtil.Sort{ !A% vR\  
CVkJMH_  
/* (non-Javadoc) ^b|? ?9&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) SIR2 Kc0  
*/ GeB&S!F  
public void sort(int[] data) {  ?f'`b<o  
int temp; Et-|[ eL  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); jCNR63/  
} Nb_Glf  
} t B`"gC~  
}  f-[.^/  
<b _K*]Z  
} sg}<()  
F-ofR]|) >  
冒泡排序: 4f8XO"k7t=  
y $uq`FW  
package org.rut.util.algorithm.support; b`S9#`  
iWr #H  
import org.rut.util.algorithm.SortUtil; /c-k{5mH%  
6 ]<yR> '  
/** +`Nu0y!rj  
* @author treeroot <[}zw!z  
* @since 2006-2-2 yY49JZ  
* @version 1.0 h;r^9g  
*/ |P|2E~[r  
public class BubbleSort implements SortUtil.Sort{ O_th/hl  
[qkW/qS  
/* (non-Javadoc) d$+0 ;D4E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dJ])`S  
*/ :PY8)39@K  
public void sort(int[] data) { ip{ b*@K  
int temp; XfMUodV-OZ  
for(int i=0;i for(int j=data.length-1;j>i;j--){ AU%Yr 6  
if(data[j] SortUtil.swap(data,j,j-1); 5? Y(FhnIC  
} /@&o%I3h  
} :]Om4Q\-#  
} b 1Wz  
} [] "bn9 +  
T8&sPt,f  
} u R5h0Fi  
Xg_l4!T_l  
选择排序: iY2q^z/S  
w?nSQBz$  
package org.rut.util.algorithm.support; w;AbJCv2  
$qZ6i  
import org.rut.util.algorithm.SortUtil; |HY{Q1%  
=1|p$@L`%  
/** 55<!H-zt  
* @author treeroot )*uotV  
* @since 2006-2-2 +/mCYI  
* @version 1.0 f!5w+6(  
*/ @RuMo"js  
public class SelectionSort implements SortUtil.Sort { AOcUr)  
>< S2o%u~  
/* 5pY|RV6:  
* (non-Javadoc) Ic!x y  
* 2Y[n  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[])  #X$s5H  
*/ hmuhq:<f  
public void sort(int[] data) { ^ . A  
int temp; "ixea- 2  
for (int i = 0; i < data.length; i++) { N z=P1&G'  
int lowIndex = i; v<l]K$5J&  
for (int j = data.length - 1; j > i; j--) { KY%qzq,n  
if (data[j] < data[lowIndex]) { a#CjGj)  
lowIndex = j; Ow5 VBw(  
} ?g@X+!RB  
} wEI? 9  
SortUtil.swap(data,i,lowIndex); bv hV  
} ~Cynw(  
} e F}KOOfC  
DXO'MZon3  
} \fI05GZ  
;KmrBNF  
Shell排序: (0_zp`)  
|{ZdAr.;  
package org.rut.util.algorithm.support; "66#F  
yn(bW\  
import org.rut.util.algorithm.SortUtil; +N2ILE8[<  
g@/}SJh/>  
/** IFa~`Gf[  
* @author treeroot .s41Tc5u  
* @since 2006-2-2 ph!h8@e  
* @version 1.0 3tUn?; 9B  
*/ 5K$<Ad4$b  
public class ShellSort implements SortUtil.Sort{ y[S9b (:+  
^vxNS[C`;  
/* (non-Javadoc) ? }`mQ<~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aAn p7\7  
*/ MMD=4;X  
public void sort(int[] data) { \xC#Zs[<  
for(int i=data.length/2;i>2;i/=2){ K g.O2F77  
for(int j=0;j insertSort(data,j,i); i 2uSPV!Tf  
} THK^u+~LM  
} w&VDe(:~  
insertSort(data,0,1); /!p}H'jl  
} ^x^(Rk}|  
l)jP!k   
/** :1gpbfW  
* @param data P (Y\l  
* @param j e6{E(=R[M  
* @param i H`q[!5~8  
*/ 1Id"|/b%$  
private void insertSort(int[] data, int start, int inc) { -G_3B(]`  
int temp; o^owv(  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); S-7C'dc  
} RVs=s}|>*  
} a gL@A  
} UFj!7gX]  
D eT$4c*:[  
} @g" vuaG}  
2!b##`UjA7  
快速排序: e$`hRZ%  
plJUQk  
package org.rut.util.algorithm.support; r/P}j4)b7  
"}-S%v`)z  
import org.rut.util.algorithm.SortUtil; *1_Ef).  
3%Q9521  
/** d1 kE)R  
* @author treeroot ~>~qA0m"m  
* @since 2006-2-2 f3>DmH#  
* @version 1.0 n3-VqYUP  
*/ ;$4&Qp:#  
public class QuickSort implements SortUtil.Sort{ 2hryY  
7+X~i@#rU  
/* (non-Javadoc) %yl17:h#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) A McZm0c`  
*/ a <F2]H=J  
public void sort(int[] data) { `}bvbvmA  
quickSort(data,0,data.length-1); <nN# K{AH  
} "o_'q@.}  
private void quickSort(int[] data,int i,int j){ 6'<[QoW];  
int pivotIndex=(i+j)/2; G!%8DX5  
file://swap Ra H1aS(  
SortUtil.swap(data,pivotIndex,j); :l iDoGDi  
PqF&[M<)  
int k=partition(data,i-1,j,data[j]); /J&DYxl":  
SortUtil.swap(data,k,j);  tL<.B  
if((k-i)>1) quickSort(data,i,k-1); w $`w  
if((j-k)>1) quickSort(data,k+1,j); p:0X3?IG3  
E2>+V{TF  
} _.BT%4  
/** :IfwhI)  
* @param data SN\c 2^#  
* @param i 0O*kC43E_  
* @param j "Y- WY,H  
* @return [/n@BK  
*/ $P%cdJT0  
private int partition(int[] data, int l, int r,int pivot) { ~$"2,&  
do{ *BF[thB:a  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); L*vKIP<EMM  
SortUtil.swap(data,l,r); )Z['=+s%  
} _G25$%/LU  
while(l SortUtil.swap(data,l,r); Un T\6u  
return l; r=54@`O!  
} O.xtY @'"  
u-mD"  
} ?k;htJcGv  
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改进后的快速排序: $p$p C/:%  
s2 :Vm\  
package org.rut.util.algorithm.support; x.] tGS  
&"hEKIqL  
import org.rut.util.algorithm.SortUtil; x7G*xHJ  
n5IQKYr g  
/** /m 7~-~$V  
* @author treeroot qE]e+S?57a  
* @since 2006-2-2 M:iH7K  
* @version 1.0 !H9^j6|  
*/ rK:cUW0]X  
public class ImprovedQuickSort implements SortUtil.Sort { y=EVpd  
UEfY'%x  
private static int MAX_STACK_SIZE=4096; DL!%Np?`  
private static int THRESHOLD=10; 2' ^7G@%  
/* (non-Javadoc) ?.H]Y&XF  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ={N1j<%fh  
*/ !=a]Awr\  
public void sort(int[] data) { \^RKb-6n  
int[] stack=new int[MAX_STACK_SIZE]; q(~|roKA(  
 jIH^  
int top=-1; p?4[nS-,  
int pivot; f#w u~*c  
int pivotIndex,l,r; 1KBGML-K3  
WjM7s]ZRv  
stack[++top]=0; (+/d*4  
stack[++top]=data.length-1; NuD|%Ebs  
{>~9?Xwh   
while(top>0){ CgYX^h?Y9  
int j=stack[top--]; WW &Wh<4  
int i=stack[top--]; mdEl CC0  
n 9`]}bnX  
pivotIndex=(i+j)/2; G43r85LO  
pivot=data[pivotIndex]; aJA(UN45  
R<{Vgy  
SortUtil.swap(data,pivotIndex,j); ;z N1Qb  
> TBXT+  
file://partition zR]!g|;f  
l=i-1; $AE5n>ZD$  
r=j; b(Tvc  
do{ (j??  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); M6Np!0G  
SortUtil.swap(data,l,r); e"NP]_vh,  
} w-LENdw  
while(l SortUtil.swap(data,l,r); :2,NKdD  
SortUtil.swap(data,l,j); : T7(sf*!*  
VO=Ibu&X  
if((l-i)>THRESHOLD){  P Je_qP  
stack[++top]=i; L G5_\sY!  
stack[++top]=l-1; 8UqH"^9.Q7  
} xSSEDfq  
if((j-l)>THRESHOLD){ Qr 4 D  
stack[++top]=l+1; bcpsjUiy#  
stack[++top]=j; 5I^;v;F  
} 6o(IL-0]c  
NRp  
} A>2_I)  
file://new InsertSort().sort(data); NMf#0Nz-  
insertSort(data); P R3Arfle  
} 1# z@D(  
/** ~!8j,Bqs+z  
* @param data QKlsBq  
*/ f86Z #%  
private void insertSort(int[] data) { m_@XoS yxI  
int temp; 0< vJ*z|_  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); q^Oj/ws  
} dIYf}7P  
} ov;^ev,(  
} +jF2 {"  
c"Vp5lo0  
} Ro"'f7(v.  
xdM'v{N#m  
归并排序: LbRQjwc]W  
u;c WIRG  
package org.rut.util.algorithm.support; i$PO#}  
=W:=}ODD  
import org.rut.util.algorithm.SortUtil; ?6`B;_m  
Xo/H+[;X  
/** cy;i1#1rO  
* @author treeroot vO~  Tx  
* @since 2006-2-2 CE c(2q+%i  
* @version 1.0 ,qv\Y]  
*/ L~Peerby  
public class MergeSort implements SortUtil.Sort{ /w(g:e  
{tY1$}R  
/* (non-Javadoc) W0~G`A(:;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) %<(d %&~  
*/ bp=r]nO  
public void sort(int[] data) { n-l_PhPQ`  
int[] temp=new int[data.length]; CW?Z\  
mergeSort(data,temp,0,data.length-1); ftR& 5 !Wm  
} 83t/ \x,Q  
c3g`k"3*`  
private void mergeSort(int[] data,int[] temp,int l,int r){ ?Y,^Moc:  
int mid=(l+r)/2; %'2.9dB  
if(l==r) return ; NLG\*mQ  
mergeSort(data,temp,l,mid); Q!V:=d  
mergeSort(data,temp,mid+1,r); ?u@jedQ  
for(int i=l;i<=r;i++){ -mG`* 0  
temp=data; vJ^~J2#5  
} a{hc{  
int i1=l; Hxgc9Fis  
int i2=mid+1; BO G.[?yx  
for(int cur=l;cur<=r;cur++){ _avf%OS  
if(i1==mid+1) ~i>DF`w$  
data[cur]=temp[i2++]; %\T,=9tD\  
else if(i2>r) 8{2  
data[cur]=temp[i1++]; o9"?z  
else if(temp[i1] data[cur]=temp[i1++]; 3c3;8h$k  
else 'kcR:5B  
data[cur]=temp[i2++]; b&&l   
} 72Y 6gcg  
} e7xBi!I)~  
k)S1Zs~G  
} 0 h!Du|?  
L#byYB;E{  
改进后的归并排序: v>B412l  
__.MS6"N  
package org.rut.util.algorithm.support; A`f"<W-m  
8TeOh 1\  
import org.rut.util.algorithm.SortUtil; F!ztU8,  
u*)/e9C  
/** \j62"  
* @author treeroot "N6HX*  
* @since 2006-2-2 "j,vlG  
* @version 1.0 C`g "Mk8  
*/ ;6[6~L%K}  
public class ImprovedMergeSort implements SortUtil.Sort { 8$\j| mN  
wPjq B{!Q  
private static final int THRESHOLD = 10; ZxwrlaA  
/ta}12Z  
/* '%[ Y  
* (non-Javadoc) goIv m:?  
* ~. vridH  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) S1U0sP@o  
*/ ;98b SR/  
public void sort(int[] data) { o&E8<e  
int[] temp=new int[data.length]; 0HoHu*+FX  
mergeSort(data,temp,0,data.length-1); [-_{3qq<e  
} =IsmPQKi  
?`Yu~a{  
private void mergeSort(int[] data, int[] temp, int l, int r) { i3N{Dt  
int i, j, k; (is',4^b  
int mid = (l + r) / 2; $It mYj.m  
if (l == r) D0FX"BY7  
return; m.m6.  
if ((mid - l) >= THRESHOLD) :&vX0 Ce:  
mergeSort(data, temp, l, mid); ?IHt T3'Rt  
else uv/\1N;V3  
insertSort(data, l, mid - l + 1); FDLo|aP/v  
if ((r - mid) > THRESHOLD) 6-_g1vq  
mergeSort(data, temp, mid + 1, r); zY_J7,0g  
else *O~y6|U?  
insertSort(data, mid + 1, r - mid); ` 5Kg[nB:  
y%i9 b&gDd  
for (i = l; i <= mid; i++) { Qq`S=:}~x  
temp = data; rz%~=Ca2j  
} :C} I6v=  
for (j = 1; j <= r - mid; j++) { lK=Is v+  
temp[r - j + 1] = data[j + mid]; u_^mN9h  
} IRm}?hHf  
int a = temp[l]; ,Zn6T"[$  
int b = temp[r]; H%vfRl3rB  
for (i = l, j = r, k = l; k <= r; k++) { >S7t  
if (a < b) {  k;+TN9  
data[k] = temp[i++]; ; um)JCXz  
a = temp; l&+O*=#Hh  
} else { A[+)PkR  
data[k] = temp[j--]; *HR pbe2  
b = temp[j]; ?K[Y"*y2  
} j9 >[^t3U  
} Unb2D4&'  
} z1Ieva]  
<!Cjq,Sk7  
/** h$'6."I  
* @param data 6U*CR=4  
* @param l 6^LXctW.  
* @param i ):G%o  
*/ O3o ^%0  
private void insertSort(int[] data, int start, int len) { SPb +H19;  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); kJ5z['4?  
} ^^"zjl*^  
} ~-A"j\gi"  
} UF!qp  
} $WIVCp  
 \nEMj,)  
堆排序: $UH:r  
i|1*bZ6'  
package org.rut.util.algorithm.support; %Z_O\zRqy)  
U_*, XLU  
import org.rut.util.algorithm.SortUtil; n>,:*5"G  
'M~`IN`  
/** *ai~!TR  
* @author treeroot $\NqD:fgb  
* @since 2006-2-2 LsWD^JE.  
* @version 1.0 W9%v#;2  
*/ A,_O=hA2I  
public class HeapSort implements SortUtil.Sort{ ; R+>}6  
T-a>k.}y  
/* (non-Javadoc) e n~m)r3&  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Sxq@W8W  
*/ ck{S  
public void sort(int[] data) { }?,?2U,8:  
MaxHeap h=new MaxHeap(); Q^f{H.  
h.init(data); 4}m9,  
for(int i=0;i h.remove(); N4+Cg t(  
System.arraycopy(h.queue,1,data,0,data.length); IrL%0&*hS  
} 2V)+ ba|+  
g9" wX?*  
private static class MaxHeap{ F9o7=5WAb  
Xb%Q%"?~  
void init(int[] data){ vWoppt  
this.queue=new int[data.length+1]; /*y5W-'d^  
for(int i=0;i queue[++size]=data; fG'~@'P~  
fixUp(size); ?0t^7HMP  
} L=#NUNiXr  
} rgVRF44X{  
P$U" y/  
private int size=0; H\Qk U`b  
W\zZ&*8$  
private int[] queue; J~5V7B  
@G2# Z  
public int get() { zE/l  
return queue[1]; wvq4 P  
} +XsE  
YYn8!FIe  
public void remove() { 1jd{AqHl  
SortUtil.swap(queue,1,size--); VH]}{i"`  
fixDown(1); yIKpyyC9H  
} _!o8s%9be  
file://fixdown 'w=|uE {^  
private void fixDown(int k) { !0@4*>n  
int j; o9e8Oj&  
while ((j = k << 1) <= size) { T9V=#+8#"  
if (j < size %26amp;%26amp; queue[j] j++; )9`HO?   
if (queue[k]>queue[j]) file://不用交换 Hnt*,C.0  
break; jXeE]A"  
SortUtil.swap(queue,j,k); Csuasi3]1d  
k = j; vT Eq T  
} 4 -tC=>>wc  
} S&}7XjY  
private void fixUp(int k) { [bHm-X]  
while (k > 1) { ~g=& wT11  
int j = k >> 1; @\&j3A  
if (queue[j]>queue[k]) $"vz>SuB  
break;  .+1I>L  
SortUtil.swap(queue,j,k); #sc!H4  
k = j; !*:g??[T  
} c7r( &h  
} 06]3+s{{  
K2Abu?  
} /7D5I\  
INr1bAe$  
} teS>t!d  
"/6#Z>y  
SortUtil: 1k6asz^T  
5Qq/nUR  
package org.rut.util.algorithm; {C 5:as  
eP]y\S*P  
import org.rut.util.algorithm.support.BubbleSort; #1haq[Uv7  
import org.rut.util.algorithm.support.HeapSort; /iO"4%v  
import org.rut.util.algorithm.support.ImprovedMergeSort; o5s6$\"  
import org.rut.util.algorithm.support.ImprovedQuickSort; vm|u~Yd,s  
import org.rut.util.algorithm.support.InsertSort; 8S#$'2sT  
import org.rut.util.algorithm.support.MergeSort; X "7CN Td  
import org.rut.util.algorithm.support.QuickSort; B`-uZ9k   
import org.rut.util.algorithm.support.SelectionSort; 8s6[-F5  
import org.rut.util.algorithm.support.ShellSort; "?zWCH  
zj r($?  
/** eV*QUjS~  
* @author treeroot qIuo8o}  
* @since 2006-2-2 ,<L4tp+y0  
* @version 1.0 r[!~~yu/o  
*/  )58O9b  
public class SortUtil { yb',nGl~  
public final static int INSERT = 1; h7+"*fN  
public final static int BUBBLE = 2; h&j2mv(  
public final static int SELECTION = 3; +=J $:/&U  
public final static int SHELL = 4; c]E pg)E  
public final static int QUICK = 5; &)k=ccm  
public final static int IMPROVED_QUICK = 6; Hy3J2p9.  
public final static int MERGE = 7; i$] :Y`3h  
public final static int IMPROVED_MERGE = 8; @HbRfD/!  
public final static int HEAP = 9; )L9eLxI  
Trs~KcsD  
public static void sort(int[] data) { IaeO0\ 4E  
sort(data, IMPROVED_QUICK); *}89.kCBF  
} w0g@ <( 3  
private static String[] name={ v>LK+|U  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" YxM\qy {Vr  
}; @FIL4sb  
#[M^Q h  
private static Sort[] impl=new Sort[]{ ?Vg~7Eu0  
new InsertSort(), fSbLkd 9  
new BubbleSort(), 7310'wc  
new SelectionSort(), E9\"@wu[d  
new ShellSort(), #-YbZ  
new QuickSort(), ?-c|c_|$  
new ImprovedQuickSort(), 01@ WU1IN  
new MergeSort(), p?$N[-W6-  
new ImprovedMergeSort(), YWn""8p;P  
new HeapSort() >!1] G"U  
};  s;bGg  
MPUyu(-%{  
public static String toString(int algorithm){ N-2#-poDe  
return name[algorithm-1]; 'df@4}9  
} @\F7nhSfa  
E}4{{{r  
public static void sort(int[] data, int algorithm) { !f(A9V  
impl[algorithm-1].sort(data); }K 'A/]'  
} oA5Qk3b:  
5 b rM..  
public static interface Sort { B`QF;,3S  
public void sort(int[] data); U=JK  
} 9c]$d  
vx?KenO}  
public static void swap(int[] data, int i, int j) { AT I=&O`  
int temp = data; UhW{KIW  
data = data[j]; q}Po)IUT`5  
data[j] = temp; {BlTLAKm  
} s7yKx g+`{  
} I7Kgi3  
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