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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。 ;'oi7b  
插入排序: oN[# C>#(  
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package org.rut.util.algorithm.support; ?>iZ){0,  
R ]y9>5 'U  
import org.rut.util.algorithm.SortUtil; 89fl\18%  
/** S%7%@Qs"%  
* @author treeroot 1-}$sO c  
* @since 2006-2-2 r'J3\7N!u  
* @version 1.0 +\66; 7]s  
*/ An=Q`Uxt/  
public class InsertSort implements SortUtil.Sort{ /i IWt\J  
*Edr\P  
/* (non-Javadoc) 9S{?@*V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ZowPga  
*/ A5YS "i  
public void sort(int[] data) { <Q?_],ip  
int temp; 8zH/a   
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UpqDGd7M  
} {ud^+I&  
} 2"B3Q:0he|  
} Ffr6P }I  
n$jf($*  
} V2*m/JyeB  
5YgUk[J  
冒泡排序: 0u8(*?  
5U.,iQ(d  
package org.rut.util.algorithm.support; ) q'~<QxI\  
uH8`ipX  
import org.rut.util.algorithm.SortUtil; .iH#8Z  
YbE1yOJ&m  
/** J!*Pg<  
* @author treeroot Zq>}SR  
* @since 2006-2-2 BXX1G  
* @version 1.0 Wg5i#6y8w  
*/ R,ddH[3  
public class BubbleSort implements SortUtil.Sort{ q pFzK  
"6P-0CJ  
/* (non-Javadoc) x^JjoI2vf  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) }NETiJ"6  
*/ ;@I}eZ,f$  
public void sort(int[] data) { 2s8(r8AI  
int temp; 0%5x&vx'S  
for(int i=0;i for(int j=data.length-1;j>i;j--){ jY5BVTWnV  
if(data[j] SortUtil.swap(data,j,j-1); \ /6m  
} Ia>>b #h  
} me/ae{  
}  P7 p'j  
} Nx"v|"  
Jul xFjC  
} 1@A*Jj[R%  
4r>buEU  
选择排序: ?u8 vK<2h  
1Qgd^o:d  
package org.rut.util.algorithm.support; 0-w^y<\  
^Sz?c_<2P  
import org.rut.util.algorithm.SortUtil; d 3 }'J  
od~`q4p1(-  
/** js8\"  
* @author treeroot 7<c&)No;  
* @since 2006-2-2 S~4HFNe^&  
* @version 1.0 i*%2 e)  
*/ }V % b  
public class SelectionSort implements SortUtil.Sort { ]qk/V:H:  
44kb  
/* r.;(Kx/M  
* (non-Javadoc) =m= utd8  
* Gg9NG`e6I  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7<VfE`Q3  
*/ ~+Da`Wp  
public void sort(int[] data) { zwKm;;v8  
int temp; "RJf2~(ZX  
for (int i = 0; i < data.length; i++) { 2_ HPsEx  
int lowIndex = i; ZW|VAn'>  
for (int j = data.length - 1; j > i; j--) { ^#L?HIM  
if (data[j] < data[lowIndex]) { a4M`Bk;mb  
lowIndex = j; R!.HS0i.  
} c~UYs\  
} }qOC*k:  
SortUtil.swap(data,i,lowIndex); $0K%H  
} 0IEFCDeCO  
} 1f1J'du  
<U$A_ ]*w  
} ,/g\;#:{@]  
weiqt *,8  
Shell排序: _"`U.!3*  
v#`Wf}G  
package org.rut.util.algorithm.support; xbA% 'p  
o s HE4x  
import org.rut.util.algorithm.SortUtil; /Iu._2  
jq&$YmWp  
/** L%.GKANM  
* @author treeroot kM?p>V6  
* @since 2006-2-2 y]`@%V2P  
* @version 1.0 RKP->@Gs  
*/ 8_tMiIE-pS  
public class ShellSort implements SortUtil.Sort{ s/K}]F  
~4iI G}Y<  
/* (non-Javadoc) Th%1eLQ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Tl3{)(ezx  
*/ 0R2 AhA#  
public void sort(int[] data) { /-39od0  
for(int i=data.length/2;i>2;i/=2){ tnmuCz  
for(int j=0;j insertSort(data,j,i); ft[g1  
} ^eEj 5Rh  
} B"I> mw  
insertSort(data,0,1); =`X@+~%-  
} G K @]61b  
f.=4p^  
/** ZCMB]bL-e  
* @param data w%k)J{\  
* @param j ^q,KR ut  
* @param i f6Wu+~|Y  
*/ 0PnW|N0  
private void insertSort(int[] data, int start, int inc) {  ~Rcd  
int temp; 3HA$k[%7P  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [#td  
} 05MtQB   
} _rqOzE)  
} va8V{q@t'  
zY|]bP[NEH  
} -j[n^y'v  
5@Q4[+5&_  
快速排序: MOG[cp  
kI3-G~2  
package org.rut.util.algorithm.support; +2w54X%?M  
WJU` g  
import org.rut.util.algorithm.SortUtil; j#U?'g  
Y(SgfWeK@1  
/** c+G: bb%p  
* @author treeroot 685o1c|  
* @since 2006-2-2 38Z"9  
* @version 1.0 XI\aZ\v  
*/ Rhx7eU#&  
public class QuickSort implements SortUtil.Sort{ UUY-EC7X  
k&DH QvfB  
/* (non-Javadoc) bYdC.AE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h{sW$WA  
*/ 2ezuP F  
public void sort(int[] data) { KF'H|)!K  
quickSort(data,0,data.length-1); *4qsM,t  
} tT yu,%/m  
private void quickSort(int[] data,int i,int j){ .KT+,Y  
int pivotIndex=(i+j)/2; #Y}Hh7.<  
file://swap .tN)H1.:B  
SortUtil.swap(data,pivotIndex,j); 2>O2#53ls0  
;.W0Aa  
int k=partition(data,i-1,j,data[j]); [`fq4Ky  
SortUtil.swap(data,k,j); gqD`1/  
if((k-i)>1) quickSort(data,i,k-1); Whd4-pR8  
if((j-k)>1) quickSort(data,k+1,j); }C7tlA8,7  
s80_e  
} #s#z@F  
/** G-3.-  
* @param data 9zO3KT2  
* @param i 45j+n.9=  
* @param j +ZE&]BO{  
* @return d0 V>;Q  
*/ :/%Vpdd@  
private int partition(int[] data, int l, int r,int pivot) {  R/^JyL  
do{ cT0utR&  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); X_'.@q<!CV  
SortUtil.swap(data,l,r); Z{p6Q1u  
} k #*|-?  
while(l SortUtil.swap(data,l,r); YF>t{|  
return l; yekIw  
} &"tce6&  
\ @N>38M  
} P>@`hZ9 o  
v[a#>!;s  
改进后的快速排序: 2 J4|7UwJ  
;mi0Q.  
package org.rut.util.algorithm.support; 1~ S Y  
N@MeaO  
import org.rut.util.algorithm.SortUtil; GPR`=]n& &  
HqXo;`Yy}  
/** E;4Ns  
* @author treeroot 2hJ{+E.m  
* @since 2006-2-2 Y[~6f,?^  
* @version 1.0 ]Hd 0 Y%  
*/ &vMH AZd  
public class ImprovedQuickSort implements SortUtil.Sort { :LBe{Jbw  
q<yH!  
private static int MAX_STACK_SIZE=4096; (C-z8R Z6  
private static int THRESHOLD=10; lIFt/  
/* (non-Javadoc) &YT7>z,  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Bd NuhV`0  
*/ '-i tn  
public void sort(int[] data) { =|U2 }U;  
int[] stack=new int[MAX_STACK_SIZE]; 4G>|It  
=(n'#mV  
int top=-1; zi?'3T%Ie  
int pivot; 3yKI2en"  
int pivotIndex,l,r; J.<%E[ z  
ax^${s|{-  
stack[++top]=0; / a$+EQ$  
stack[++top]=data.length-1; D`t e|K5  
@6j*XF  
while(top>0){ #>v7" <  
int j=stack[top--]; pz&=5F  
int i=stack[top--]; YQ]H3GA  
y{<#pS.  
pivotIndex=(i+j)/2; xeI ,Kz."  
pivot=data[pivotIndex]; ,K9UT#h  
D@^F6am%  
SortUtil.swap(data,pivotIndex,j); bg HaheU  
KFZ[gqW8YY  
file://partition G wW#Ww;Oc  
l=i-1; kQ#eWk J,  
r=j; 4C*3#/TR  
do{ `>sqP aD  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); DYWC]*  
SortUtil.swap(data,l,r); N6J$z\ P  
} ]JD$fS=_  
while(l SortUtil.swap(data,l,r); R&4E7wrdP  
SortUtil.swap(data,l,j); uf;q/Wr  
Vd?v"2S(9  
if((l-i)>THRESHOLD){ '!.;(Jo  
stack[++top]=i; q~^:S~q  
stack[++top]=l-1; yX-xVvlv@  
} 13QCM0#  
if((j-l)>THRESHOLD){ ^z^>]Qd  
stack[++top]=l+1; + kF[Oh#  
stack[++top]=j; P+b^;+\1s  
} %b{!9-n}  
^ Wl/  
} *.*:(7`  
file://new InsertSort().sort(data); aqM_t  
insertSort(data); !n{c#HfG  
} UeICn@)\y  
/** }-L@AC/\#  
* @param data 5{g9Wh[  
*/ JG<3,>@%  
private void insertSort(int[] data) { m@,>d_|-K-  
int temp; g \-3c=X  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); S!q}Pn  
} =a!6EkX *  
} pMquu&Td  
} V1:3  
]T51;j'48  
} |f:d72{Qr  
h]Oplp4 \W  
归并排序: w3w*"M  
J:lwq@u  
package org.rut.util.algorithm.support; GiZ'IDV  
!p&'so^-W  
import org.rut.util.algorithm.SortUtil; rl^LS z  
v 2GhR*  
/** ^ <VE5OM  
* @author treeroot z`5I 1#PVA  
* @since 2006-2-2 Ozv.;}SE  
* @version 1.0 ]-'9|N*}l  
*/ spx;QLo  
public class MergeSort implements SortUtil.Sort{ 2SJh6U  
U(N$6{i_  
/* (non-Javadoc) u}1vn}F{  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )/Xrhhx  
*/ \!QF9dP4  
public void sort(int[] data) { 5lxq-E3  
int[] temp=new int[data.length]; z{g<y^Im+E  
mergeSort(data,temp,0,data.length-1); I7PWO d  
} 9AYe,R  
@c !67Z  
private void mergeSort(int[] data,int[] temp,int l,int r){ L%d?eHF  
int mid=(l+r)/2; 12PE{Mut  
if(l==r) return ; lDU:EJ&DHE  
mergeSort(data,temp,l,mid); h<K;VpL6  
mergeSort(data,temp,mid+1,r); tKeO+6l  
for(int i=l;i<=r;i++){ 'r n;|K  
temp=data; "|'`'W  
} tTFoS[V  
int i1=l; 93Gur(j^  
int i2=mid+1; 3K!0 4\  
for(int cur=l;cur<=r;cur++){ |2<f<k/UT  
if(i1==mid+1) $cOD6Xr)d  
data[cur]=temp[i2++]; 1:!rw,Jzl`  
else if(i2>r) R$fIb}PDr  
data[cur]=temp[i1++]; -NPk N%h  
else if(temp[i1] data[cur]=temp[i1++]; (bt]GAxb1  
else ];d:z[\P  
data[cur]=temp[i2++]; W>s'4C`  
} C9H11g7{  
} <M OL{jan  
,;P`Mf'YC  
} \u _v7g  
4<g72| y  
改进后的归并排序: >.hGoT!_k  
{}o>ne nx\  
package org.rut.util.algorithm.support; -fx88  
px>> ]>ZMH  
import org.rut.util.algorithm.SortUtil; U9o*6`"o  
Hs}"A,V  
/** ]A]E)*  
* @author treeroot 70 UgKE  
* @since 2006-2-2 !(_xu{(DL  
* @version 1.0 K2rS[Kdfaq  
*/ z83:a)U  
public class ImprovedMergeSort implements SortUtil.Sort { `VFl|o#H  
ZU.)K>'  
private static final int THRESHOLD = 10; !-RpRRR[Co  
%H}Y]D~R  
/* SfobzX}~Jh  
* (non-Javadoc) ^1,Eo2yN  
* `/JR}g{O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,L{o, qzC  
*/ b#;N!VX  
public void sort(int[] data) { \Tf{ui  
int[] temp=new int[data.length]; T7,Gf({  
mergeSort(data,temp,0,data.length-1); v~2XGm  
} Df,VV+  
9;Pu9s[q2  
private void mergeSort(int[] data, int[] temp, int l, int r) { ls "\YSq$  
int i, j, k; V=4u7!ha  
int mid = (l + r) / 2; dezL{:Ya  
if (l == r) Vc52s+7=8  
return; aho<w+l@  
if ((mid - l) >= THRESHOLD) 3zA=q[C  
mergeSort(data, temp, l, mid); y]pN=<*h5  
else ]6%%X+$7  
insertSort(data, l, mid - l + 1); Q xF8=p  
if ((r - mid) > THRESHOLD) ~:}XVt0%8  
mergeSort(data, temp, mid + 1, r); qv*uM0G6i  
else 4fu\3A&  
insertSort(data, mid + 1, r - mid); ~sHZh  
&]yJCzo]  
for (i = l; i <= mid; i++) { Y5i`pY/}#?  
temp = data; G2+)R^FSC  
} BdoC6H  
for (j = 1; j <= r - mid; j++) { v*'iWHCl,  
temp[r - j + 1] = data[j + mid]; io Y\8i  
} d!QD vO  
int a = temp[l]; BQul iX&  
int b = temp[r]; zj$_iB`9  
for (i = l, j = r, k = l; k <= r; k++) { aBVEk2 p  
if (a < b) { : 9?Cm`  
data[k] = temp[i++]; ,Z*3,/a  
a = temp; @2~O^5[>  
} else { X|damI%  
data[k] = temp[j--]; !Zyx$2K  
b = temp[j]; y|+~>'^JR  
} p]V-<  
} R#7+  
} &X]=Q pl  
,4>WLJDo  
/** BtpjQNN  
* @param data x:n9dm  
* @param l  TCKI  
* @param i 2 .Eu+*UC  
*/ kJvy<(iG  
private void insertSort(int[] data, int start, int len) { ngkeJ)M0$  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); '^F|k`$r  
} \;B$hT7z*  
} Zn<(,e  
} Gx h~  
} 4j@kMe;RjZ  
yS uLt@X  
堆排序: zA'gb'MmW  
H7tQ#  
package org.rut.util.algorithm.support; 93^(O8.  
c6Yf"~TD0  
import org.rut.util.algorithm.SortUtil; <(bCz>o|  
R%)2(\  
/** RlslF9f  
* @author treeroot j""y2c1  
* @since 2006-2-2 Y( V3P nH  
* @version 1.0 LG Y!j_bD  
*/ _8x'GK tU  
public class HeapSort implements SortUtil.Sort{ ;vI*ThzdD  
m[@%{  
/* (non-Javadoc) +J o 3rX'`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Vyq#p9Q  
*/ -lP )  
public void sort(int[] data) { rAlh& ?X  
MaxHeap h=new MaxHeap(); {7K'<ti  
h.init(data); oc3dd"8}@  
for(int i=0;i h.remove(); l6 S19Kv  
System.arraycopy(h.queue,1,data,0,data.length); *< $c =  
} re ]Ste  
_d\u!giy  
private static class MaxHeap{ u8<&F`7j  
;* wT,2;  
void init(int[] data){ <*A|pns  
this.queue=new int[data.length+1]; n?ZL"!$  
for(int i=0;i queue[++size]=data; o%/-5-  
fixUp(size); 409x!d~it  
} _UH/}!nqB  
} 2|0Qk&  
G.-h=DT]  
private int size=0; T1Gp$l  
GCP{Z]u  
private int[] queue; [xZ/ZWb/  
SG dfhno;  
public int get() { y~== waZw  
return queue[1]; 2,8/Cb  
} *l>[`U+  
;T5,T   
public void remove() { 6Q.{llO  
SortUtil.swap(queue,1,size--); ~),;QQ,  
fixDown(1); r 1l/) ;  
} l50|` 6t  
file://fixdown 08Pt(kzNA  
private void fixDown(int k) { ,Lt~u_lve  
int j; .g/ARwM}  
while ((j = k << 1) <= size) { C@TN5?Z  
if (j < size %26amp;%26amp; queue[j] j++; {[M0y*^64$  
if (queue[k]>queue[j]) file://不用交换 o~OwE7H)A  
break; z`emKFbv  
SortUtil.swap(queue,j,k); >%uAQiU  
k = j; `2B*CMW{  
} p4m^ ~e  
} 1a($8>  
private void fixUp(int k) { ,2 zt.aqB  
while (k > 1) { `G=ztL!gq  
int j = k >> 1; H4PbO/{xO  
if (queue[j]>queue[k]) toS(UM n  
break; ;Pol#0_(  
SortUtil.swap(queue,j,k); E3 ~,+68U  
k = j; rxs~y{ Xi  
} Z&+NmOY4  
} /v}P)&  
zuC58B  
} <ICZ"F`S  
1A7%0/K-]  
} _'! aj +{  
!Y ;H(.A/  
SortUtil: N5pinR5 H  
Xt</ -`  
package org.rut.util.algorithm; iGG6Myp-  
_u:>1]  
import org.rut.util.algorithm.support.BubbleSort; `3 f_d}b  
import org.rut.util.algorithm.support.HeapSort; -Z:]<;qU  
import org.rut.util.algorithm.support.ImprovedMergeSort;  /6+1{p  
import org.rut.util.algorithm.support.ImprovedQuickSort; !cq=)xR  
import org.rut.util.algorithm.support.InsertSort; "C_T]%'Wm  
import org.rut.util.algorithm.support.MergeSort; +V)qep"  
import org.rut.util.algorithm.support.QuickSort; }1U#Ve,=_  
import org.rut.util.algorithm.support.SelectionSort; t$U3|r  
import org.rut.util.algorithm.support.ShellSort; nc3sty1`  
ES^>[2Y  
/** ;j>*;Q`  
* @author treeroot (NGu9uJs  
* @since 2006-2-2 e$CePLEj  
* @version 1.0 %v5)s(Yu  
*/ lhLnygUk  
public class SortUtil { *)MX%`Z}  
public final static int INSERT = 1; [leW/2i  
public final static int BUBBLE = 2; Um]p&phVL  
public final static int SELECTION = 3; H7{Q@D8  
public final static int SHELL = 4; %xf)m[JU=  
public final static int QUICK = 5; IZv~[vi_  
public final static int IMPROVED_QUICK = 6; U8CWz!;Qz  
public final static int MERGE = 7; 6BDt.bG  
public final static int IMPROVED_MERGE = 8; +68+PhHF  
public final static int HEAP = 9; 2{Wo-B,wt~  
~R :<Bw  
public static void sort(int[] data) { 7IA3q{P  
sort(data, IMPROVED_QUICK); z7-`Y9Ypd  
} +O)]^"TG  
private static String[] name={ 3^!Hl8P7  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Q Oz9\,C  
}; oS~}TR:}  
C@*%AY  
private static Sort[] impl=new Sort[]{ `*>V6B3  
new InsertSort(), 7SBM^r}  
new BubbleSort(), ?QGmoQ)  
new SelectionSort(), %0vTA_W  
new ShellSort(), ;(K  
new QuickSort(), ! mm5I#s  
new ImprovedQuickSort(), u K'<xM"%T  
new MergeSort(), }KK2WJp#M  
new ImprovedMergeSort(), }0$mn)*k  
new HeapSort() vT?Q^PTO  
}; . 3Gn ZR,L  
Q(lku"U'  
public static String toString(int algorithm){ BR;QY1  
return name[algorithm-1]; %m oJF1  
} \;-qdV_JB  
;SfNKu  
public static void sort(int[] data, int algorithm) { c\M#5+1j  
impl[algorithm-1].sort(data); 6^Ph '  
} {]=v]O |,  
Q4X7Iu:  
public static interface Sort { Xad*I ulj  
public void sort(int[] data); {] O`g G  
} ,:^ N[b   
x Y| yI>  
public static void swap(int[] data, int i, int j) { x ;Gz6|  
int temp = data; +L0J_.5%^  
data = data[j]; 8)sg_JC  
data[j] = temp; NjbwGcH%\  
} t)ld<9)eB  
} !(Q l)C  
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