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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。 n'rq  
插入排序: +kI}O*s  
%+r(*Q+0$f  
package org.rut.util.algorithm.support; ^;II@n i  
;v8TT}R  
import org.rut.util.algorithm.SortUtil; Y] 1U1 08  
/** \Y,P  
* @author treeroot B"v*[p?  
* @since 2006-2-2 mbAzn  
* @version 1.0 ~#g c{ C@  
*/ $#^3>u  
public class InsertSort implements SortUtil.Sort{ e {6wFN  
_d!sSyk`  
/* (non-Javadoc) 5?3v;B6  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) E2Sj IR}  
*/ CW;zviH5  
public void sort(int[] data) { CfOyHhhKX  
int temp; X8}r= K~  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l(Y32]Z   
} c| %5SA  
} 2tU3p<[  
} S5|7D[*  
:F d1k Jm  
} TT/=0^"  
@Z0. }}Y  
冒泡排序: n6[shXH  
GS*O{u  
package org.rut.util.algorithm.support; gvVy0nJI~  
b$w66q8  
import org.rut.util.algorithm.SortUtil; iBWzxPv:z  
LBio$67F  
/** nA Nl9;G  
* @author treeroot H:b"Vd"x9  
* @since 2006-2-2 M_O$]^I3w  
* @version 1.0 3SM'vV0[  
*/ I'D3~UI f  
public class BubbleSort implements SortUtil.Sort{ .(&6gB  
+R?E @S  
/* (non-Javadoc) Gb2|e.z  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) v~RxtTu  
*/ u!xgLf'`  
public void sort(int[] data) { :qS~"@?<  
int temp; Qc33C A  
for(int i=0;i for(int j=data.length-1;j>i;j--){ !/`AM<`o  
if(data[j] SortUtil.swap(data,j,j-1); r E1ouz!D  
} '"Cqq{*  
} ks$5$,^T2o  
} wz+mFf  
} :WH{wm|  
HF*~bL  
} 6oKlr,.  
iMry0z  
选择排序: | {zka.sJ  
:~s"]*y  
package org.rut.util.algorithm.support; )1 @v<I  
!}A`6z  
import org.rut.util.algorithm.SortUtil; 4P C'7V=S  
\>T1&JT  
/** ]Y & 2&  
* @author treeroot z@~Z Mk  
* @since 2006-2-2 8<Nz34Y  
* @version 1.0 0?R$>=u  
*/ d+Mogku2  
public class SelectionSort implements SortUtil.Sort { *{JD= ua  
=5:vKL j  
/* d*!H&1L  
* (non-Javadoc) I9TNUZq('  
* n n[idw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0o6r3xc;  
*/ 5 Bcmz'?!  
public void sort(int[] data) { qoan<z7  
int temp; `U?S 9m  
for (int i = 0; i < data.length; i++) { mGz'%?zj  
int lowIndex = i; sS)tSt{C  
for (int j = data.length - 1; j > i; j--) { zv1,DnkqF  
if (data[j] < data[lowIndex]) { $IKN7  
lowIndex = j; +Km xo4p  
} uA?a DjA  
} }zo-%#  
SortUtil.swap(data,i,lowIndex); >iJxq6!  
} w6 Y+Y;,'f  
} 8}z PDs  
'o_ RC{k2"  
} U ;4;>  
(^=kV?<  
Shell排序: d6W&u~  
VuBi_v6  
package org.rut.util.algorithm.support; _#<l -R`  
*nM.`7g*[  
import org.rut.util.algorithm.SortUtil; ~9f Ts4U  
Z,3CMWHg  
/** G*v,-O  
* @author treeroot _qit$#wK;  
* @since 2006-2-2 { F0"U=  
* @version 1.0 <^Q` y  
*/ EU5(s*A  
public class ShellSort implements SortUtil.Sort{ $YBH;^#  
BZQJ@lk5  
/* (non-Javadoc) c1]\.s  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) IxP$ lx  
*/ 'u [cT$  
public void sort(int[] data) { =F*{O=  
for(int i=data.length/2;i>2;i/=2){ < Lrd(b;  
for(int j=0;j insertSort(data,j,i); lZ+ 1 A0e  
} .b%mr:nEt7  
} ]sI{ +$~:c  
insertSort(data,0,1); |qk%UN<  
} R[lA@q:  
@XF/hhGE_y  
/** _*(:6,8  
* @param data .Vq_O u  
* @param j $L"-JNS  
* @param i piUfvw  
*/ <>1*1%m  
private void insertSort(int[] data, int start, int inc) { ~m'8BK  
int temp; U&tR1v'  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /Hc0~D4|x  
} T/7[hj  
} 7`X9s~B  
} B415{  
k.0pPl  
} %8L5uMx  
; UjP0z  
快速排序: `^E(P1oJ3  
5.)/gK2$  
package org.rut.util.algorithm.support;  s@3<]  
j%&^qD,  
import org.rut.util.algorithm.SortUtil; iQaFR@  
f1VA61z{)  
/** "_&HM4%!  
* @author treeroot =7("xz %  
* @since 2006-2-2 @}N;C ..Y$  
* @version 1.0 [C~{g#  
*/ T\HP5&  
public class QuickSort implements SortUtil.Sort{ _nnl+S>K  
\RP=Gf  
/* (non-Javadoc) Neb%D8/Kn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @*LESN>T@t  
*/ b+}*@xhl  
public void sort(int[] data) { HaamLu  
quickSort(data,0,data.length-1); }oTac  
} e.g$|C^$m  
private void quickSort(int[] data,int i,int j){ (3G]-  
int pivotIndex=(i+j)/2; k@R)_,2HH  
file://swap 80M4~'3  
SortUtil.swap(data,pivotIndex,j); KK*"s^ L  
w4+bzdZ  
int k=partition(data,i-1,j,data[j]); kjW`k?'s  
SortUtil.swap(data,k,j); QPa&kl  
if((k-i)>1) quickSort(data,i,k-1); {GH 0 J"  
if((j-k)>1) quickSort(data,k+1,j); 1z(y>`ZBq  
Ts:pk  
} T+/Gz'  
/** Wm ?RB0  
* @param data BPKeG0F7  
* @param i U `"nX)$  
* @param j Ih95&HsdC  
* @return c~Hq.K$d  
*/ LNU9M>  
private int partition(int[] data, int l, int r,int pivot) { V# 6`PD6  
do{ 0?j+d8*  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); STB=#z  
SortUtil.swap(data,l,r); oM-@B'TK  
} 4d3PF`,H`  
while(l SortUtil.swap(data,l,r); 7"y"%+*/  
return l; SIRZ_lt$r  
} R\=y/tw0H  
:FdV$E]]<  
} i_&&7.  
D &wm7,  
改进后的快速排序: V9m1n=r  
|v{ a5|<E  
package org.rut.util.algorithm.support; r,b-c  
(#. )~poZ  
import org.rut.util.algorithm.SortUtil; /$x6//0If  
18!0H l>  
/** lBTgI"n=eK  
* @author treeroot ni]gS0/  
* @since 2006-2-2 mv xg|<  
* @version 1.0 |xaA3UA  
*/ ZD0Q<8%  
public class ImprovedQuickSort implements SortUtil.Sort { fD|ox  
zUxF"g-W  
private static int MAX_STACK_SIZE=4096; 413r3/  
private static int THRESHOLD=10; >[Q(!Ai  
/* (non-Javadoc) d=wzN3 ;-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^fb4g+Au  
*/ Fk 1M5Dm  
public void sort(int[] data) { 1}!f.cWV(  
int[] stack=new int[MAX_STACK_SIZE]; =RUKN38  
0:nQGX!N  
int top=-1; hD l+  
int pivot; *Qg/W? "m  
int pivotIndex,l,r; ]}G (@9  
/^0Hi4+\  
stack[++top]=0; J]|-.Wv1  
stack[++top]=data.length-1; 5R,/X  
37!}8  
while(top>0){ -]PW\}w1  
int j=stack[top--]; JX/rAnc@  
int i=stack[top--]; 9!FV. yp%F  
zYj8\iER  
pivotIndex=(i+j)/2; Q_1EAxt  
pivot=data[pivotIndex]; ;LH?Qu;e  
4F 8`5)RM  
SortUtil.swap(data,pivotIndex,j); .)u,sYZA|  
|)IN20  
file://partition T.W/S0#j3  
l=i-1; Jo h&Ay  
r=j; K#";!  
do{ 88)0Xi|]KP  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); JUU0Tx:`9)  
SortUtil.swap(data,l,r); )CXJRo`j0  
} |g 4!Yd  
while(l SortUtil.swap(data,l,r); c#`Z[  
SortUtil.swap(data,l,j); m.EWYO0XQ  
m(Bv}9  
if((l-i)>THRESHOLD){ })bTQj7  
stack[++top]=i; 0  x"3  
stack[++top]=l-1; fwxyZBr  
} M6|Q~8$  
if((j-l)>THRESHOLD){ c6dL S  
stack[++top]=l+1; 9}2I'7]  
stack[++top]=j; .6OE8w 1  
} o~^hsm[44J  
C `knFGb  
} CWI(Q`((>  
file://new InsertSort().sort(data); P RX:*0  
insertSort(data); FK={ %  
} S)$ES6]9/  
/** Pd^ilRB  
* @param data -\>Bphu,y  
*/ HcQ{ok9u  
private void insertSort(int[] data) { ~"}-cl,  
int temp; {v]A`u)  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); c+|,2e 0T  
} a50{gb#  
} zc,fJM  
} R0\E?9P  
U#,2et6  
} ;U}lh~e11  
t]" 3vE>  
归并排序: t91v%L   
}QG6KJh_%  
package org.rut.util.algorithm.support; HHoh//(\  
Z:9"7^+  
import org.rut.util.algorithm.SortUtil; ZZFa<AK4  
D,1S-<  
/** uj;-HN)6  
* @author treeroot <tgJ-rnL  
* @since 2006-2-2 [al$7R&  
* @version 1.0 4(  ^Ht  
*/ (D{9~^EO>a  
public class MergeSort implements SortUtil.Sort{ yHk/8  
)0RH"#, 2L  
/* (non-Javadoc) pt|u?T_+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,uE WnZ"4  
*/ ]X4A)%i  
public void sort(int[] data) { oe4Fy}Y_;  
int[] temp=new int[data.length]; Cq/*/jBM  
mergeSort(data,temp,0,data.length-1); .azdAq'r&\  
} Y R#_<o  
S1;#5 8  
private void mergeSort(int[] data,int[] temp,int l,int r){ ) <^9`  
int mid=(l+r)/2; (+bk +0  
if(l==r) return ; U{n 0Z  
mergeSort(data,temp,l,mid); SH5GW3\h  
mergeSort(data,temp,mid+1,r); xC!,v 0&  
for(int i=l;i<=r;i++){ 3@s|tm1  
temp=data; q}tLOVu1  
} m/%sBw\rx  
int i1=l; j$A~3O<e"  
int i2=mid+1; =R?NOWrDY  
for(int cur=l;cur<=r;cur++){ 4 K{4=uU  
if(i1==mid+1) 3(}HD*{E[@  
data[cur]=temp[i2++]; &FIPEe#n  
else if(i2>r) mTYEK4}  
data[cur]=temp[i1++]; nXk<DlTws  
else if(temp[i1] data[cur]=temp[i1++]; L&Bc-kMH  
else E,u@,= j  
data[cur]=temp[i2++]; L5of(gQ5]  
} EM;]dLh  
} u0#q) L8  
2|kx:^D p  
} qA#!3<  
kOx2P(UAEx  
改进后的归并排序: ZVVK:d Dgt  
]f-< s,@  
package org.rut.util.algorithm.support; G;qC& 7T  
oAA%pZ@  
import org.rut.util.algorithm.SortUtil; dBX%/  
PDzVXLpC  
/** rH$0h2  
* @author treeroot e ,k,L  
* @since 2006-2-2 ZVR0Kzu?Ra  
* @version 1.0 W$v5o9\Px  
*/ uRh`qnL  
public class ImprovedMergeSort implements SortUtil.Sort { 0^5SL/2  
`\(Fax  
private static final int THRESHOLD = 10; 2 Do^N5y  
sr sDnf  
/* a(NN%'fDD  
* (non-Javadoc) FG38)/  
* %=S~[&8C  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4[9~g=y>  
*/ wH3FCfvm  
public void sort(int[] data) { /4<eI 3Z  
int[] temp=new int[data.length]; |/Am\tk#13  
mergeSort(data,temp,0,data.length-1); uw&GXOzew9  
} Gnr]qxL  
_hMMm6a|  
private void mergeSort(int[] data, int[] temp, int l, int r) { \@8$tQCZ  
int i, j, k; {Fta4D_1N  
int mid = (l + r) / 2; d /+sR@\  
if (l == r) T""X~+{Z@  
return; 5 b( [1*  
if ((mid - l) >= THRESHOLD) ~*ZB2  
mergeSort(data, temp, l, mid); kb Fr  
else $oHlfV/!  
insertSort(data, l, mid - l + 1); , pq<.?&E  
if ((r - mid) > THRESHOLD) h$_Wh(  
mergeSort(data, temp, mid + 1, r); &-470Z%/  
else !r,ZyJU  
insertSort(data, mid + 1, r - mid); dMp7 ,{FhF  
g(7htWr4  
for (i = l; i <= mid; i++) { XD<7d")I  
temp = data; KCGs*kp>  
} /iQ}DbtRb  
for (j = 1; j <= r - mid; j++) { t IdH?x  
temp[r - j + 1] = data[j + mid]; 0e^j:~*  
} C=t:0.:PJ  
int a = temp[l]; -P]J:7*0?\  
int b = temp[r]; jW}n6w5  
for (i = l, j = r, k = l; k <= r; k++) { 9qc1^Fs~  
if (a < b) { xO`w| k  
data[k] = temp[i++]; {  KE[8n  
a = temp; j/5>zS  
} else { ,]w -!I  
data[k] = temp[j--]; ) **k3u t4  
b = temp[j]; !Ui3}  
} _Z~wpO}/  
} Z=_p  
} 3/H^YM @  
7v}4 Pl,$4  
/** J/pW*G-U|  
* @param data U SXz  
* @param l R4"["T+L`  
* @param i  (d |  
*/ $h0]  
private void insertSort(int[] data, int start, int len) { if9I7@  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); `o8b\p\zn  
} xAMj16ZF  
} Oj:O-PtN2  
} `zAV#   
} l!ltgj  
f#pT6  
堆排序: w;vp X>  
=iC5um:  
package org.rut.util.algorithm.support; [R)?93  
z%Ywjfn'  
import org.rut.util.algorithm.SortUtil; mDC{c ?  
w1F7gd  
/** {c<MB xk  
* @author treeroot NIrK+uC.d  
* @since 2006-2-2 2lDgv ug  
* @version 1.0 2mP| hp?  
*/ b#FN3AsR  
public class HeapSort implements SortUtil.Sort{ v1?P$f*g  
m=k(6  
/* (non-Javadoc) N+rLbK*  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^2[0cne  
*/ U5jY/e_  
public void sort(int[] data) { 41>Bm*if  
MaxHeap h=new MaxHeap(); :Qh5ZO&G0  
h.init(data); udX4SBq-pC  
for(int i=0;i h.remove();  wa6DJ  
System.arraycopy(h.queue,1,data,0,data.length); ',n;ag`c  
} #.?DsK_:@  
s/0-DHd  
private static class MaxHeap{ 9aD6mp  
`W e M  
void init(int[] data){ 9Xmb_@7b}  
this.queue=new int[data.length+1]; lb2mWsg"  
for(int i=0;i queue[++size]=data; i >Hh_q;'  
fixUp(size); O?p.kf{b  
} Mc oHV]x  
} =L{lt9qQz  
_SjS^z~  
private int size=0; #dE#w#=r  
J\b,rOIf  
private int[] queue; \/$T 3f`x  
ptQr8[FA  
public int get() { 1 h|cr_  
return queue[1]; E)o/C(g  
} HuBG?4Qd  
+ 1\1Z@\M  
public void remove() { 4JKB6~Y  
SortUtil.swap(queue,1,size--); Vj_(55WQ  
fixDown(1); :T" !6;  
} k{Vc5F  
file://fixdown N*$<Kjw  
private void fixDown(int k) { x~!B.4gT2  
int j; 2/sD#vC  
while ((j = k << 1) <= size) { w&f8AY)#]4  
if (j < size %26amp;%26amp; queue[j] j++; kEf}yTy  
if (queue[k]>queue[j]) file://不用交换 }OJ*o  
break; `sQ\j Nu  
SortUtil.swap(queue,j,k); @4^5C-  
k = j; L^yQb4$&M  
} quN7'5ZC[  
} .21%~"dxJ  
private void fixUp(int k) { >Bq;Z}EV  
while (k > 1) { 90|p]I%  
int j = k >> 1; JQYIvo1,Q  
if (queue[j]>queue[k]) K~z*P 0g*  
break; iaQ[}'6!$  
SortUtil.swap(queue,j,k); Z^`&Z3s  
k = j; p/ pVMR  
} M(HU^?B{'  
} yBE1mA:x7:  
f)H6 n l7r  
} V^QKn+/  
( t#w@<  
} ^+oi|y  
VQU[5C  
SortUtil: C6,GgDH`  
p18-yt; 1  
package org.rut.util.algorithm; h>sz@\{  
OYzt>hdH  
import org.rut.util.algorithm.support.BubbleSort; #B8`qFpQC  
import org.rut.util.algorithm.support.HeapSort; QG?7L_I  
import org.rut.util.algorithm.support.ImprovedMergeSort; sqi~j(&\1  
import org.rut.util.algorithm.support.ImprovedQuickSort; vD D !.i  
import org.rut.util.algorithm.support.InsertSort; D$q"k"  
import org.rut.util.algorithm.support.MergeSort; |Yh-`~~A"  
import org.rut.util.algorithm.support.QuickSort; 5'@J}7h  
import org.rut.util.algorithm.support.SelectionSort; G]E$U]=9r:  
import org.rut.util.algorithm.support.ShellSort; V.)y7B  
@;qC % +^  
/** nMx0+N1  
* @author treeroot jFM8dl n  
* @since 2006-2-2 >F8&wh'BjY  
* @version 1.0 _s><>LH~  
*/ /D`M?nD7  
public class SortUtil { sSd  
public final static int INSERT = 1; !H{)L@f  
public final static int BUBBLE = 2; EJjTf:  
public final static int SELECTION = 3; ;38W41d{  
public final static int SHELL = 4; :^0g}8$<  
public final static int QUICK = 5; Re5m  
public final static int IMPROVED_QUICK = 6; \3n{%\_  
public final static int MERGE = 7; & d\`=e  
public final static int IMPROVED_MERGE = 8; 9Re605x Q6  
public final static int HEAP = 9; d8<Lk9H9R  
J_}&Btb)e  
public static void sort(int[] data) { Xx[ L K  
sort(data, IMPROVED_QUICK); p|,K2^?Y  
} 7loCb4Hv  
private static String[] name={ (9';zw   
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" LeO ))  
}; %56pP"w  
V[wEn9   
private static Sort[] impl=new Sort[]{ @I\Z2-J  
new InsertSort(), jz't!wj  
new BubbleSort(), {.bLh 0  
new SelectionSort(), 5 usfyY]z  
new ShellSort(), daaUC  
new QuickSort(), '[-gK n  
new ImprovedQuickSort(), AJ2Xq*fk  
new MergeSort(), 5IW^^<kiu  
new ImprovedMergeSort(), "M v%M2'c  
new HeapSort() _t6siB_u  
}; YP>VC(f   
&YO5N4X~o  
public static String toString(int algorithm){ +1Si>I  
return name[algorithm-1]; BS;rit:  
} |~8\{IcZ  
75K~ebRr  
public static void sort(int[] data, int algorithm) { Vm'ReH  
impl[algorithm-1].sort(data); Tr)a6Cf  
} (6u<w#u  
W0tBF&E"  
public static interface Sort { |o~FKy1'z\  
public void sort(int[] data); Vyj>&"28  
} .2Q`. o)  
,Ot3N\%yn  
public static void swap(int[] data, int i, int j) { DG8$zl5  
int temp = data; t"2WJ-1k}  
data = data[j]; bVtboHlY  
data[j] = temp; TcZ Ci^1F  
} 1KruGq~  
} -2v|d]3qG  
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