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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。 A9LVS&52  
插入排序: (1%A@ 4  
PsN_c[+  
package org.rut.util.algorithm.support; nsu RG  
3u9}z+q  
import org.rut.util.algorithm.SortUtil; l)Mi?B~N  
/** P@U2Q%\  
* @author treeroot l$C Y gm  
* @since 2006-2-2 _: !7M ^IU  
* @version 1.0 ;;Jx1Q  
*/ Pe` jNiI  
public class InsertSort implements SortUtil.Sort{ {G{ >Qa|  
| zOwC9-6  
/* (non-Javadoc) aX.//T:':?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {%6g6?=j  
*/ ,j eC7-tX  
public void sort(int[] data) { (ZQ?1Qxo  
int temp; R HmT$^=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c=p!2jJ1K~  
} Kae-Y  
} \ F)}brPc  
} c+:^0&l  
LmPpt3[  
} <BK?@Xy  
ghW  
冒泡排序: eqqnR.0  
*Z3b6X'e  
package org.rut.util.algorithm.support; /$|-!e<5b\  
o>HGfr,N  
import org.rut.util.algorithm.SortUtil; xn1, o MY=  
Y9B"yV  
/** d/\ajQ1::  
* @author treeroot dHtEyF  
* @since 2006-2-2 fRp(&%8E  
* @version 1.0 X5=I{eY}  
*/ RJdijj  
public class BubbleSort implements SortUtil.Sort{ vHb^@z=  
dAi.^! !  
/* (non-Javadoc) WLCr~r^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5X:3'*  
*/ W4)bEWO+q  
public void sort(int[] data) { yn.[-  
int temp; cuL/y$+EY  
for(int i=0;i for(int j=data.length-1;j>i;j--){ u"DE?  
if(data[j] SortUtil.swap(data,j,j-1); l6.&<0pLT  
} ?3<Y/Vg%c  
} Fp>nu_-"  
} *C.Kdf3w  
} }|l7SFst  
Fm+V_.H/;  
} jwheJ G  
#j"GS/y"  
选择排序: 5i%\m  
m1M6N`f  
package org.rut.util.algorithm.support; 6+:;M b_S  
593!;2/@  
import org.rut.util.algorithm.SortUtil; z<8VJZd  
Ei89Ngp\}  
/** X=Jt4 h 9  
* @author treeroot D0h6j0r 5  
* @since 2006-2-2 C{,Vk/D-0  
* @version 1.0 Q|G|5X  
*/ `)TgGny01  
public class SelectionSort implements SortUtil.Sort { #{J+BWP\o  
C2 yJ Xi`$  
/* lz _ r  
* (non-Javadoc) c-4z8T#M^  
* xsU3c0wbr8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Wl]XOUZ  
*/ W?n/>DML  
public void sort(int[] data) { M*aYcIU((  
int temp; ^grDP*;W  
for (int i = 0; i < data.length; i++) { UkC'`NWF*  
int lowIndex = i; #p-\Y7f  
for (int j = data.length - 1; j > i; j--) { 6sT( t8[  
if (data[j] < data[lowIndex]) { Y[W] YPs  
lowIndex = j; 6xu%M&ht  
} OXbC\^qo@  
} !wKiMgLS  
SortUtil.swap(data,i,lowIndex); h7AO5"6  
} 18]Q4s8E  
} 8tzL.P^  
a>k9& w  
} yGH')TsjD  
\8USFN~(Y  
Shell排序: nPH\Lra  
n2Q ?sV;m  
package org.rut.util.algorithm.support; <}F(G-kV6  
)M8@|~~  
import org.rut.util.algorithm.SortUtil; \!*F:v0g^  
 &%T*sR  
/** $)'LbOe  
* @author treeroot qos/pm$&i  
* @since 2006-2-2 \\35} 9  
* @version 1.0 X n Rm9%  
*/ ^=qV)j  
public class ShellSort implements SortUtil.Sort{ O mph(  
^}lL@Bd|  
/* (non-Javadoc) qJR8fQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ] ~ }~d(  
*/ >]2^5C;  
public void sort(int[] data) { .ZM0cwF  
for(int i=data.length/2;i>2;i/=2){ &"Fz)}  
for(int j=0;j insertSort(data,j,i); ""h%RhcZ\  
} qBZ;S3  
} LN9.Q'@r?  
insertSort(data,0,1); KVoM\ttP  
} AOx8OiqE:  
'Y]<1M>.g  
/** /mwDVP<z /  
* @param data S5~(3I )v  
* @param j a~zh5==QD  
* @param i D3y4e8+Z'  
*/ GE\({V.W  
private void insertSort(int[] data, int start, int inc) { %h v-3L#V  
int temp; R9UC0D:-x  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ^c| 0?EH  
} m~F ~9&  
} |RDE/  
} c$_}   
4x.I"eW~&  
} J~ wu*x  
ozA%u,\7k  
快速排序: id]}10  
FV%|*JW[;N  
package org.rut.util.algorithm.support; Ld=6'C8ud  
x[$ :^5V  
import org.rut.util.algorithm.SortUtil; ]Nue1xV_  
T;i+az{N:V  
/** ?XVox*6K&  
* @author treeroot ~O 4@b/!4  
* @since 2006-2-2 i(xL-&{  
* @version 1.0 zoj w^%W  
*/ S(:|S(  
public class QuickSort implements SortUtil.Sort{ Az/P;C=  
[ * !0DW`  
/* (non-Javadoc) <<H'Z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) fLV@~T|  
*/ ][~rk?YY  
public void sort(int[] data) { y/+y |.Xg  
quickSort(data,0,data.length-1); u Npa2{S'  
} LtNspFoLb  
private void quickSort(int[] data,int i,int j){ SA [(1dy;  
int pivotIndex=(i+j)/2; B'6(Ao=3/  
file://swap /}s#   
SortUtil.swap(data,pivotIndex,j); $[b1_Db  
ryTtGx%a  
int k=partition(data,i-1,j,data[j]); l{V(Y$xp3  
SortUtil.swap(data,k,j); zF&_9VNk=c  
if((k-i)>1) quickSort(data,i,k-1); .iST!nh  
if((j-k)>1) quickSort(data,k+1,j); %@%~<U)W  
;!EEzR.  
} ppO!v?  
/** p&HkR^.S  
* @param data c32"$g  
* @param i %}{.U  
* @param j U)1hC^[!   
* @return _;-b ZH  
*/ (dym*_J  
private int partition(int[] data, int l, int r,int pivot) { ,;yaYF 6|/  
do{ t<cWMx5ra  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); &pAmFe  
SortUtil.swap(data,l,r); IOl0=+p  
} f1t?<=3Ek<  
while(l SortUtil.swap(data,l,r); `Vh&XH\S  
return l; ;\iu*1>Z,&  
} @! jpJ}  
I2?g'tz  
} DhG{hQ[[  
:oJ!9\5  
改进后的快速排序: UQjZhH  
0:eK}tC  
package org.rut.util.algorithm.support; b=:%*gq,  
[LSs|f  
import org.rut.util.algorithm.SortUtil; qtp-w\#S$  
D \boF+^  
/** dkZ[~hEQG-  
* @author treeroot PH!rWR  
* @since 2006-2-2 5(y Q-/6C+  
* @version 1.0 W}k)5<C4v  
*/ 5NMju!/  
public class ImprovedQuickSort implements SortUtil.Sort { X{qa|6S,F  
&l W~ot1,  
private static int MAX_STACK_SIZE=4096; 7Y^2JlZu=  
private static int THRESHOLD=10; 'zuA3$SR  
/* (non-Javadoc) Q5;EQ .#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?<soX8_1  
*/ mMad1qCi7  
public void sort(int[] data) { 5 Praj  
int[] stack=new int[MAX_STACK_SIZE]; >n>gX/S<C  
6!RK Zj)  
int top=-1; 8 HdjZ!  
int pivot; Na`vw  
int pivotIndex,l,r; q?# w%0}  
B|rf[EI>  
stack[++top]=0; 9RY}m7  
stack[++top]=data.length-1; 9>d~g!u=  
xGX U7w:X  
while(top>0){ ae] hCWK  
int j=stack[top--]; J(`(PYo\i  
int i=stack[top--]; aMyf|l.  
=7zvp,B  
pivotIndex=(i+j)/2; 5R O_)G<  
pivot=data[pivotIndex]; 3L;&MG=  
_\AT_Zmy  
SortUtil.swap(data,pivotIndex,j); </qli-fXB}  
+4K'KpFzZ  
file://partition %X(|Z4dL  
l=i-1; >orDw3xC  
r=j; {^Q1b.=  
do{ xQ8?"K;iX  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); \eS-wO7%  
SortUtil.swap(data,l,r); _({K6adb  
} _^Q =n>G  
while(l SortUtil.swap(data,l,r); 1$uO%  
SortUtil.swap(data,l,j); y?V#LW[^E  
RZI4N4o  
if((l-i)>THRESHOLD){ &fwb?Vn4  
stack[++top]=i; u]t#Vf-$u  
stack[++top]=l-1; o&rNM5:  
} |z.Ov&d4)(  
if((j-l)>THRESHOLD){ ;3N>m| ?D=  
stack[++top]=l+1; m H&WoL<K  
stack[++top]=j; h?&S*)1  
} [\)irCDv  
gOn^}%4.I  
} }I#,o!)Vd  
file://new InsertSort().sort(data);  Tv~Ys#  
insertSort(data); NSQf@o  
} Su[f"2oR  
/** Y_M3-H=0  
* @param data x5!lnN,#  
*/ J ?H| "  
private void insertSort(int[] data) { P!lTK   
int temp; hgF4PdO1e  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Rm=[Sj84  
} )cxML<j'  
} BxGz4  
} sTF Ru  
`xu/|})KI  
} m#t  
(J\Qo9Il  
归并排序: Kv6#WN~  
+FtL_7[v  
package org.rut.util.algorithm.support; PH]ui=  
?1/wl;=fm  
import org.rut.util.algorithm.SortUtil; PD@@4@^  
JJE0q5[  
/** REKv&^FLN  
* @author treeroot x '`L( C  
* @since 2006-2-2 Y1U\VU  
* @version 1.0 sqk$q pV6  
*/ ,2^zX]dgM  
public class MergeSort implements SortUtil.Sort{ (ysDs[? \  
7Dwf0Re`  
/* (non-Javadoc) jxA*Gg3cT5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) c^BeT;  
*/ DX@*lM  
public void sort(int[] data) { K7gqF~5x~  
int[] temp=new int[data.length]; vhu5w#]u*  
mergeSort(data,temp,0,data.length-1); :X ~{,J  
} )x&OdFX  
B}2 JK9  
private void mergeSort(int[] data,int[] temp,int l,int r){ Km,:7#aV  
int mid=(l+r)/2; FR1se  
if(l==r) return ; `1)n2<B  
mergeSort(data,temp,l,mid); 7%Ii:5Bp  
mergeSort(data,temp,mid+1,r); X4:SH> U!  
for(int i=l;i<=r;i++){ uOnyU+fZV  
temp=data; BJ7m3[lz  
} &&{_T4  
int i1=l; "r.eN_d  
int i2=mid+1; _.$g?E/(  
for(int cur=l;cur<=r;cur++){ d(j|8/tpA  
if(i1==mid+1) 9mfP9  
data[cur]=temp[i2++]; ixIfJ  
else if(i2>r) N"#=Q=)x  
data[cur]=temp[i1++]; 5K %  
else if(temp[i1] data[cur]=temp[i1++]; Fwv(J_'q  
else fW.)!EPO  
data[cur]=temp[i2++]; p}R3A J  
} rJ}k!}G  
} i2+vUl|;Z  
>6zXr.  
} ]NgEN  
Hze~oAP+  
改进后的归并排序: [}!obbM  
h> A}vI*:  
package org.rut.util.algorithm.support; c<j  +"  
&nEQ `3~F  
import org.rut.util.algorithm.SortUtil; by%k*y  
yu] nK-Y7S  
/** H@pF3gh  
* @author treeroot !^<%RT9@|  
* @since 2006-2-2 } X[wWH  
* @version 1.0 h$eVhN &Vv  
*/ ia}V8i  
public class ImprovedMergeSort implements SortUtil.Sort { |qTS{qQh{L  
8q#Be1u<s2  
private static final int THRESHOLD = 10; {QRrAi  
p-;I"uKv  
/* QnNddCiu=  
* (non-Javadoc) p6e9mSs  
* U:o(%dk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6t(I.>-  
*/ dY%>C75O  
public void sort(int[] data) { a4iq_F#NF  
int[] temp=new int[data.length]; 4P\?vz"  
mergeSort(data,temp,0,data.length-1); .8.LW4-ff  
} x nm!$ $W  
W6[# q%o  
private void mergeSort(int[] data, int[] temp, int l, int r) { z?i{2Fz6  
int i, j, k; X6g{qzHg_  
int mid = (l + r) / 2; V}UYr Va#9  
if (l == r) !K$qh{n  
return; JHZ`LWq  
if ((mid - l) >= THRESHOLD) K<Qy1y~[  
mergeSort(data, temp, l, mid); >*aqYNft  
else 9F^rXY.  
insertSort(data, l, mid - l + 1); UjI -<|  
if ((r - mid) > THRESHOLD) oDEvhN T  
mergeSort(data, temp, mid + 1, r); YjM_8@ <  
else C%y!)v_x  
insertSort(data, mid + 1, r - mid); QL4BD93v  
Lw!Q*3c  
for (i = l; i <= mid; i++) { 7 -Yn8Gq  
temp = data; RY]Vo8  
} ;_vo2zl1  
for (j = 1; j <= r - mid; j++) { 7v^V]&&s  
temp[r - j + 1] = data[j + mid]; #fR~ 7 KR  
} XY1e eB-  
int a = temp[l]; nm597WeZp  
int b = temp[r]; 8hx 3pvmk  
for (i = l, j = r, k = l; k <= r; k++) { E)=X8y  
if (a < b) { [nnX,;  
data[k] = temp[i++]; j[Xc i<m  
a = temp; dW8M^A&  
} else { 3l8k O  
data[k] = temp[j--]; :>'4@{'   
b = temp[j]; {a `#O9  
}  ,m-/R  
} 8QYM/yAM  
} YzD6S*wb  
{KO +t7'Q  
/** PLmf.hD\  
* @param data )D1=jD(  
* @param l uNn]hl|x  
* @param i .}.63T$h9  
*/ 5, <:|/r  
private void insertSort(int[] data, int start, int len) { ?Q XS?  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ucVn `  
} 9M&uQccY  
} qrtA'fU  
} WKB8k-.]ww  
} A!&hjV`  
6 -\ghPo  
堆排序: Fl'+ C  
sC=fXCGW\p  
package org.rut.util.algorithm.support; f*}H4H EO  
jZ8#86/#{  
import org.rut.util.algorithm.SortUtil; 1hQeuG  
+bbhm0f  
/** i!jR>+  
* @author treeroot lrXi *u]  
* @since 2006-2-2 C/{tvY /o  
* @version 1.0 eZ^-gk?  
*/ aF~ 0\XC  
public class HeapSort implements SortUtil.Sort{ {IlX@qWr  
`1eGsd,f  
/* (non-Javadoc) (K(6`~  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) JWuF ?<+k  
*/ !VJ5(b  
public void sort(int[] data) { 9<ev]XaSl  
MaxHeap h=new MaxHeap(); rprtp5Cg  
h.init(data); V!Q1o!J  
for(int i=0;i h.remove(); Alsr6uLT1  
System.arraycopy(h.queue,1,data,0,data.length); -%*w&',G  
} 0DFxVH_xN  
C/w!Y)nB=  
private static class MaxHeap{ Xt!%W    
`f9I#B  
void init(int[] data){ UF)4K3X  
this.queue=new int[data.length+1]; 7Q(5Nlfcz  
for(int i=0;i queue[++size]=data; 7Q>*]  
fixUp(size); )Bq~1M 2  
} smM*HDK  
} C)r!;u)AZH  
w/`I2uYu  
private int size=0; -m.SN>V  
f;k'dqlv  
private int[] queue; > %~%O`+  
A\jX#gg  
public int get() { RU1+ -   
return queue[1]; \v'\ Ea~  
} Q]q`+ Z65  
1qw*mV;W)_  
public void remove() { ]i3 1@O  
SortUtil.swap(queue,1,size--); 3',|HA /x  
fixDown(1); }BpCa6SAs  
} CqRG !J  
file://fixdown BN?OvQ  
private void fixDown(int k) { ?>_[hZ  
int j; WzC_M>_  
while ((j = k << 1) <= size) { IfH*saN7  
if (j < size %26amp;%26amp; queue[j] j++; |G5Me  
if (queue[k]>queue[j]) file://不用交换 %b H1We  
break; KKz{a{ePY%  
SortUtil.swap(queue,j,k); #sOkD  
k = j; ItZqLUJ m  
} Fnnk }I}  
} 1%?J l~M  
private void fixUp(int k) { #N=!O/Y  
while (k > 1) { ib4shaN`  
int j = k >> 1; AQ>8]`e`  
if (queue[j]>queue[k]) ,,Dwb\B}  
break; 3}@!TI  
SortUtil.swap(queue,j,k); S9$*w!W  
k = j; X0,?~i6Q  
} 1Fado$# 7  
} 7n-;++a5]  
zF6]2Y?k%  
} R(?g+:eCpM  
iY /N%T;  
} ?3Ytn+Py  
=+T$1  
SortUtil: Qz+hS\yx  
pV>M, f  
package org.rut.util.algorithm; s/,wyxKd  
kAF[K,G G  
import org.rut.util.algorithm.support.BubbleSort; e%(,)WlTaU  
import org.rut.util.algorithm.support.HeapSort; |z!Y,zaX  
import org.rut.util.algorithm.support.ImprovedMergeSort; 3J2j5N:g  
import org.rut.util.algorithm.support.ImprovedQuickSort; j0p'_|)(  
import org.rut.util.algorithm.support.InsertSort; 6iiH+Nc  
import org.rut.util.algorithm.support.MergeSort; -/>SdR$D7  
import org.rut.util.algorithm.support.QuickSort; C0xj M0  
import org.rut.util.algorithm.support.SelectionSort; X  8V^  
import org.rut.util.algorithm.support.ShellSort; t,*hxzD"  
jXBAo  
/** r>=)Y32Q  
* @author treeroot \;z *j|;B  
* @since 2006-2-2 { XN"L3A  
* @version 1.0  [>IAS>  
*/ m'))prl  
public class SortUtil { IpX>G]"-C  
public final static int INSERT = 1; ^6*2a(S&  
public final static int BUBBLE = 2; d66 GO];"  
public final static int SELECTION = 3; =tJ}itcJ'  
public final static int SHELL = 4; pq 4/>WzE  
public final static int QUICK = 5; $"d< F3k  
public final static int IMPROVED_QUICK = 6; YxEc(a"  
public final static int MERGE = 7; K5O#BBX=  
public final static int IMPROVED_MERGE = 8; zFy0Sz F  
public final static int HEAP = 9; wzr3 y}fCe  
u? a*bW  
public static void sort(int[] data) { n+Ia@ $|m  
sort(data, IMPROVED_QUICK); n M +(  
} x \.q zi  
private static String[] name={ vJheM*C  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" |U*wMYC  
}; !2)$lM1@J  
SjT8 eH #  
private static Sort[] impl=new Sort[]{ 3d qj:4[f  
new InsertSort(), ,k*g `OTW  
new BubbleSort(), l2))StEm  
new SelectionSort(), WUQlAsme  
new ShellSort(), YQyf:xJ  
new QuickSort(), ~ kdxJP"  
new ImprovedQuickSort(), 2|xNT9RW  
new MergeSort(), r Z0+mS'/G  
new ImprovedMergeSort(), <,%qt_ !  
new HeapSort() W}<'Y@[ ,  
}; lg)jc3  
1gEeZ\B-&  
public static String toString(int algorithm){ 481SDG[b  
return name[algorithm-1]; dqU bJc]  
} ?mdgY1  
a#iJXI  
public static void sort(int[] data, int algorithm) { $ e<&7  
impl[algorithm-1].sort(data); i ez@j  
} -^m]Tb<u  
29(s^#e8A  
public static interface Sort { q[l!kC+Eh  
public void sort(int[] data); \,<5U F0  
} zJnF#G  
VCzmTnD  
public static void swap(int[] data, int i, int j) { EgAM,\  
int temp = data; W0 n/B &C  
data = data[j]; }<y-`WB  
data[j] = temp; VKW9Rn9Qg  
} |/u&%w?W  
} Byx8`Cx1  
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