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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。 392(N(  
插入排序: SN"Y@y)=  
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package org.rut.util.algorithm.support; VM5'd  
JG^GEJ  
import org.rut.util.algorithm.SortUtil; mQVlE__ub  
/** S}Wj.l+F  
* @author treeroot kO`!!M[Oo  
* @since 2006-2-2 38&K"  
* @version 1.0 <=|^\r !}&  
*/ a=ZVKb  
public class InsertSort implements SortUtil.Sort{ a\m=E#G  
S ^~"#   
/* (non-Javadoc) u `ww  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 38-kl,Vw  
*/ W"s/ 8;  
public void sort(int[] data) { e%:vLE 9  
int temp; gcwJ{&  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); O=}  
} Wx#l}nD  
} Z~(X[Zl :  
} &b:y#gvJ:  
q}jh>`d  
} 4#W$5_Ny  
<~ay4JY  
冒泡排序: HrLws95'  
A]QGaWK  
package org.rut.util.algorithm.support; dL'oIBp  
Y[b08{/  
import org.rut.util.algorithm.SortUtil; |4BD  
rvhMu}.  
/** 1M)88&  
* @author treeroot (JOR: 1aT  
* @since 2006-2-2 "<egm^Yq  
* @version 1.0 !j  #8zN  
*/  \v:Z;EbX  
public class BubbleSort implements SortUtil.Sort{ D)4#AI  
$5ea[n c  
/* (non-Javadoc) zGd[sjL  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 7ko}X,aC  
*/ 8:I-?z;S  
public void sort(int[] data) { X pK eN2=p  
int temp; xzx~H>M  
for(int i=0;i for(int j=data.length-1;j>i;j--){ Mf5*Wjz.Mc  
if(data[j] SortUtil.swap(data,j,j-1); !6taOT>v  
} oKkDG|IE  
}  S{XO3  
} LCIe1P2  
} ;)f,A)(Z  
B|^=2 >8s  
} OS(Ua  
d@ZXCiA},  
选择排序: ze8MFz'm  
bjwl21;{  
package org.rut.util.algorithm.support; !*qQ 7  
jX$U)O  
import org.rut.util.algorithm.SortUtil; k^q~ 2  
yJ; ;&  
/** ~}D"8[ABj  
* @author treeroot HN;f~EQT  
* @since 2006-2-2 2xy{g&G  
* @version 1.0 <gvgr4@^yR  
*/ 9,>c;7s X  
public class SelectionSort implements SortUtil.Sort { ?56;<%0  
R6GlQ G  
/* F CfU=4O  
* (non-Javadoc) Cw.DLg  
* |BbrB[+ v[  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >Zm|R|{BE  
*/ ZQ\O| n8  
public void sort(int[] data) { l@<Jp *|  
int temp; cKwmtmwB  
for (int i = 0; i < data.length; i++) { Hs.5@l  
int lowIndex = i; !r*JGv=  
for (int j = data.length - 1; j > i; j--) { R|O^7o  
if (data[j] < data[lowIndex]) { kQ6YQsJ.*  
lowIndex = j; *ES"^N/88  
} DT]3q4__Q  
} Zqg AgN@  
SortUtil.swap(data,i,lowIndex); h&Q-QU  
} 7c'OIY].,  
} >6zWOYd  
OBM&N  
} %SMP)4Y/R  
nhq,Y0YH  
Shell排序: cn$0^7?  
U4y ?z  
package org.rut.util.algorithm.support; y[f6J3/  
u9}LvQh_6,  
import org.rut.util.algorithm.SortUtil; `=W#owAF  
]<o^Q[OL  
/** 2cJ3b 0Xx  
* @author treeroot d[e;Fj!  
* @since 2006-2-2 KJ6:ZTbW  
* @version 1.0 (=D^BXtH|  
*/ 9>L{K   
public class ShellSort implements SortUtil.Sort{ rEs Gf+4  
ozG!OiRW  
/* (non-Javadoc) lz0'E'%{P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NK(; -~{P  
*/ V7Mp<x%  
public void sort(int[] data) { Dj{t[z]$k  
for(int i=data.length/2;i>2;i/=2){ IlP@a[:_  
for(int j=0;j insertSort(data,j,i); bdyE9t   
} ')v<MqBr  
} l`<u\],  
insertSort(data,0,1); ~VO?PfxZ  
} eRwm>l"fVV  
'sAs#  
/** ~_yz\;#  
* @param data UYOR@x #  
* @param j #-FfyxQ8ai  
* @param i }?z_sNrDk  
*/ 2sqNTuO6,|  
private void insertSort(int[] data, int start, int inc) { Ru^j~Cj5  
int temp; ?Kf?Z`9 *Y  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); ]bb`6 \h  
} b+ v!3|  
} 3%SwCYd  
} hj-#pL-t  
N[dv  
} i_qR&X  
>Sh"/3%q  
快速排序: J |TA12s  
x3?:"D2  
package org.rut.util.algorithm.support; El`f>o+EJ  
h; 8^vB y  
import org.rut.util.algorithm.SortUtil; z>./lu\  
h\qM5Qx+Q  
/** 4^rO K  
* @author treeroot /MQI5Djg  
* @since 2006-2-2 1k! xG$g0  
* @version 1.0 6H_7M(f  
*/ PE-P(T3s[8  
public class QuickSort implements SortUtil.Sort{ G_UxR9Qo  
$f^ \fa[  
/* (non-Javadoc) g<r'f"^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 89{@2TXR  
*/ g` QbJ61a  
public void sort(int[] data) { #=B~} _  
quickSort(data,0,data.length-1); /_G^d1T1?L  
} zS##YR  
private void quickSort(int[] data,int i,int j){ ?YO$NYwE  
int pivotIndex=(i+j)/2; s&7,gWy}BE  
file://swap fhZD#D  
SortUtil.swap(data,pivotIndex,j); g5*Zg_G/  
+u:Q+PkM  
int k=partition(data,i-1,j,data[j]); L3g}Z1<!$  
SortUtil.swap(data,k,j); ekj@;6 d]  
if((k-i)>1) quickSort(data,i,k-1); tzeS D C  
if((j-k)>1) quickSort(data,k+1,j); y-iuOzq4  
c_xo6+:l  
} C4jq T  
/** Iq-+X3i  
* @param data phA^ kdW  
* @param i aT %A<'O!  
* @param j 62X;gb  
* @return Ox` +Z0)a  
*/ aBO%qmtt  
private int partition(int[] data, int l, int r,int pivot) { \*V`w@  
do{ C?3?<FDL  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); fQ^45ulz  
SortUtil.swap(data,l,r); '}D$"2I*  
} {T]^C  
while(l SortUtil.swap(data,l,r); 6-@ X  
return l; Y!6,ty'  
} ]~SOGAFW  
JPX5Jm()  
} C>vp oCA  
d+Vx:`tT  
改进后的快速排序: OI9V'W$  
D4x~Vk%H  
package org.rut.util.algorithm.support; x*A_1_A  
Ifm|_  
import org.rut.util.algorithm.SortUtil; 4q`$nI Bi  
Olg@ Ri  
/** {/x["2a1  
* @author treeroot G6N$^HkW?  
* @since 2006-2-2 RQZ|:SvV  
* @version 1.0 z#8d\X/  
*/ d5zF9;[  
public class ImprovedQuickSort implements SortUtil.Sort { :h>d'+\  
+K3SAGm  
private static int MAX_STACK_SIZE=4096; y~JCSzpU  
private static int THRESHOLD=10; eUyQSI4A  
/* (non-Javadoc) N|v3a>;*l  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) n_Ht{2I  
*/ /N`l z>^~  
public void sort(int[] data) { TS9=A1J#  
int[] stack=new int[MAX_STACK_SIZE]; i9.~cnk  
h]rF2 B  
int top=-1; Gu-*@C:^&  
int pivot; 0k?ph$  
int pivotIndex,l,r; QPf#y7_@u  
W?a2P6mAh  
stack[++top]=0; rRN7H L+b  
stack[++top]=data.length-1; NM0[yh  
8#gS{   
while(top>0){ lD;="b  
int j=stack[top--]; S aCa  
int i=stack[top--]; ,7m Rb-*p  
(Yzy;"iAu  
pivotIndex=(i+j)/2; &^C <J  
pivot=data[pivotIndex]; g7*ii X  
l^s\^b=W  
SortUtil.swap(data,pivotIndex,j); "JLKO${ Y  
P< +5So0  
file://partition }nDKSC/[V!  
l=i-1; 8#OcrJzC  
r=j; ~:Jw2 P2z  
do{ D@V1}/$UoN  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); @_tQ:U,v  
SortUtil.swap(data,l,r); cSYW)c|t  
} sE4= 2p`x  
while(l SortUtil.swap(data,l,r); 47R4gs#W  
SortUtil.swap(data,l,j); =_%i5]89P  
8]6u]3q#  
if((l-i)>THRESHOLD){ Z&hzsJK{m$  
stack[++top]=i; V0Cz!YM_3  
stack[++top]=l-1; b_&;i4[  
} o#KGENd  
if((j-l)>THRESHOLD){ /P~@__XN  
stack[++top]=l+1; sN^3bfi!i  
stack[++top]=j; &+?JY|u  
} @(Mg>.P  
\bze-|C  
} r7z8ICX'q  
file://new InsertSort().sort(data); ,~ D_T  
insertSort(data); 6N}>@Y5  
} `mro2A  
/** |kwBb>V  
* @param data 5cbtMNP  
*/ $EjM )  
private void insertSort(int[] data) { 4J=6A4O5Z  
int temp; K-&&%Id6R  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ""[(e0oA  
} 7 tOOruiC  
} |s&jWM$  
} <$#b3F"I  
(U"Ub;[7  
} Y}_J@&:  
?dJ-g~  
归并排序: {*VCR  
)J?Nfi%  
package org.rut.util.algorithm.support; ~n:dHK`  
~$1Zw&X  
import org.rut.util.algorithm.SortUtil; -@49Zh2'  
X<\y%2B|l  
/** 4\)"Ih  
* @author treeroot 2s{PE  
* @since 2006-2-2 ?*i qg[:  
* @version 1.0 bT|N Z!V  
*/ j tdhdA  
public class MergeSort implements SortUtil.Sort{ j9zK=eG  
]UG+<V ,:  
/* (non-Javadoc) ]Mu + DZ  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8r^~`rL  
*/ pyEi@L1p  
public void sort(int[] data) { ^qL2Q*  
int[] temp=new int[data.length]; }]1=?:tX%  
mergeSort(data,temp,0,data.length-1); f\sxx!kt  
} wYtL1D(  
kG:,Ff>  
private void mergeSort(int[] data,int[] temp,int l,int r){ q=bW!.#?  
int mid=(l+r)/2; l MCoc'ae  
if(l==r) return ; _qg)^M6  
mergeSort(data,temp,l,mid); *={` %  
mergeSort(data,temp,mid+1,r); hLyD#XCFA  
for(int i=l;i<=r;i++){ 6Q<^,`/T  
temp=data; [AzQP!gi  
} v\Zni4  
int i1=l; M)Iu'  
int i2=mid+1; aRBTuLa)fo  
for(int cur=l;cur<=r;cur++){ }`g:) g J  
if(i1==mid+1) ?{s!.U[T@  
data[cur]=temp[i2++]; x OCHP|?  
else if(i2>r) OhmKjY/}  
data[cur]=temp[i1++]; % AqUVt9}  
else if(temp[i1] data[cur]=temp[i1++]; "mbcZ5 _  
else x{Y}1+Y4  
data[cur]=temp[i2++]; shbPy   
} Nz`4q %+  
} S<"M5e  
*I;,|Jjk  
} 6Z~u2&  
Txkmt$h  
改进后的归并排序: ^,L vQW4  
H"|xG;cf  
package org.rut.util.algorithm.support; 82% ~WQnS  
v,Lv4)  
import org.rut.util.algorithm.SortUtil; P-9[,3Zd  
3$Ew55  
/** "(y",!U@  
* @author treeroot -TKS`,#  
* @since 2006-2-2 70p1&Y7or  
* @version 1.0 8X=cGYC#  
*/ <vx/pH)f  
public class ImprovedMergeSort implements SortUtil.Sort { rrK&XP&  
f,9jK9/$  
private static final int THRESHOLD = 10; (~F{c0 \C  
O5HK2Xg,C  
/* V5y8VT=I  
* (non-Javadoc) hC ^|  
* p<1z!`!P  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _@CY_`a  
*/ ;Ee!vqD2  
public void sort(int[] data) { u.( WW(/N  
int[] temp=new int[data.length]; QFOmnbJg  
mergeSort(data,temp,0,data.length-1); 5mB%Xh;bg  
} ]>fAV(ix  
tx}} Kd  
private void mergeSort(int[] data, int[] temp, int l, int r) { J(*q OGBD  
int i, j, k; aY8"Sw|4  
int mid = (l + r) / 2; >jEn>H?  
if (l == r) Xz)UH<  
return; 'Eds0"3  
if ((mid - l) >= THRESHOLD) ugexkdgM  
mergeSort(data, temp, l, mid); Xg:w;#r,  
else &jCT-dj  
insertSort(data, l, mid - l + 1); * z|i{=W F  
if ((r - mid) > THRESHOLD) Wx#((T  
mergeSort(data, temp, mid + 1, r); < aeBhg%  
else ~[|&)}q  
insertSort(data, mid + 1, r - mid); Zw+VcZz3  
jR-`ee}y2  
for (i = l; i <= mid; i++) { s BP.P7u  
temp = data; K8NoY6  
} u"IYAyzL  
for (j = 1; j <= r - mid; j++) { j .Ro(0%  
temp[r - j + 1] = data[j + mid]; %VG;vW\V  
} d (Ufj|;  
int a = temp[l]; 85; BS'  
int b = temp[r]; ' uvTOgP,  
for (i = l, j = r, k = l; k <= r; k++) { Rd6? ,  
if (a < b) { `ER">@&  
data[k] = temp[i++]; O+I\Q?   
a = temp; +jzwi3B`  
} else { O]{3aMs!Y  
data[k] = temp[j--]; VU+`yQp  
b = temp[j]; IXb]\ )  
} } ).rD  
} mG4myQ?$  
} XMb]&VvH  
:uhU<H<,f  
/** 1e`/N+6u  
* @param data x`8rR;N!  
* @param l H..g2;D  
* @param i P3|_R HIb  
*/ 4\'1j|nS[  
private void insertSort(int[] data, int start, int len) { UhuEE  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); b%`^KEvwfo  
} UM$\{$  
} pvL)BD  
} eliT<sw8  
} A/n-.ci  
i^j1 i  
堆排序: 0$)CWah  
2e_ssBbb  
package org.rut.util.algorithm.support; 0TA{E-A   
]h4^3   
import org.rut.util.algorithm.SortUtil;  pME17 af  
\l^L?69  
/** r[xj,eIb  
* @author treeroot \_?A8F  
* @since 2006-2-2 VwfeaDJw  
* @version 1.0 [fF0Qa-  
*/ r':wq   
public class HeapSort implements SortUtil.Sort{ g ycjIy@t  
W}&[p=PAS  
/* (non-Javadoc) r0ml|PX  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) FEqs4<}E  
*/ *a_U2}N  
public void sort(int[] data) { z%xWP&3%"  
MaxHeap h=new MaxHeap(); IS *-MLi  
h.init(data); ^(<Ecdz(  
for(int i=0;i h.remove(); e~ #;ux  
System.arraycopy(h.queue,1,data,0,data.length); &R$6dG4  
} Ewjzm,2  
N{L'Q0!  
private static class MaxHeap{ H&K(,4u^  
i}cqV B?r  
void init(int[] data){ 9>gxJ7pY  
this.queue=new int[data.length+1]; r{y&}gA  
for(int i=0;i queue[++size]=data; qYD$_a  
fixUp(size);  lJaR,,  
} Rf*we+  
} RTN?[`  
l1(6*+  
private int size=0; 0vN<0  
zrt\] h+  
private int[] queue; o+UCu`7e  
C:S*ju K  
public int get() { Ore>j+  
return queue[1]; +ZH-'l  
} 4to)ff  
32y GIRV  
public void remove() { &)UZ9r`z  
SortUtil.swap(queue,1,size--); oNW.-gNT  
fixDown(1); uSnG=tB  
} 0 p  6  
file://fixdown V_b"^911r  
private void fixDown(int k) { 5`su^  
int j; ,;3#}OGg  
while ((j = k << 1) <= size) { }yQ&[Mt  
if (j < size %26amp;%26amp; queue[j] j++; q18IqY*Lo  
if (queue[k]>queue[j]) file://不用交换 )xJCH9h  
break; SU,S1C_q8  
SortUtil.swap(queue,j,k); gc~nT/lfK  
k = j; Z) nB  
} sVdn>$KXk  
} 0,~f"Dyqy  
private void fixUp(int k) { 5^kLNNum  
while (k > 1) { $~x#Q?-y  
int j = k >> 1; &72 ( <  
if (queue[j]>queue[k]) |'mwr!  
break; UC3&:aQ!  
SortUtil.swap(queue,j,k); ,4kly_$BH  
k = j; Q-A:0F&{t  
} pib i#  
} L{;Sc_  
GYv D*?uBc  
} R _#x  
=;9 %Q{  
} MW^(  
?D 8<}~Do  
SortUtil: EPEy60Rx5  
Fjnp0:p9X  
package org.rut.util.algorithm; Q]44A+M]  
2x PkQOj3  
import org.rut.util.algorithm.support.BubbleSort; %:yp>nm  
import org.rut.util.algorithm.support.HeapSort; Eb 8vnB#  
import org.rut.util.algorithm.support.ImprovedMergeSort; s &4k  
import org.rut.util.algorithm.support.ImprovedQuickSort; ?= G+L0t  
import org.rut.util.algorithm.support.InsertSort; WBb@\|V|  
import org.rut.util.algorithm.support.MergeSort; L7kNQ/  
import org.rut.util.algorithm.support.QuickSort; qp#Is{=m  
import org.rut.util.algorithm.support.SelectionSort; h%4aL38  
import org.rut.util.algorithm.support.ShellSort; \!O3]k,r  
UA>3,|gV1  
/** i}&&rr  
* @author treeroot P{T\zT  
* @since 2006-2-2 Zv[D{  
* @version 1.0 &xhwx>C`K  
*/ E6 g]EE  
public class SortUtil { *}F>c3x]  
public final static int INSERT = 1; v,T :V#f^  
public final static int BUBBLE = 2; HgGwV;W  
public final static int SELECTION = 3; =g.R?H8cj5  
public final static int SHELL = 4; fL xGaOT  
public final static int QUICK = 5; _#\e5bE=Z  
public final static int IMPROVED_QUICK = 6; I |PEC-(  
public final static int MERGE = 7; + 6noQYe  
public final static int IMPROVED_MERGE = 8; RB\ Hl  
public final static int HEAP = 9; [zC1LTXe  
Fb2,2Px  
public static void sort(int[] data) { 9f(0 qa  
sort(data, IMPROVED_QUICK); _h6j, )  
} !+UU[uM  
private static String[] name={ K20,aWBq;3  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" R"wBDWs  
}; UC e{V]T  
]!c59%f=  
private static Sort[] impl=new Sort[]{ `p!&>,lrk  
new InsertSort(), Z Zs@P#]  
new BubbleSort(), xNrPj8V<Y  
new SelectionSort(), gg0rkg  
new ShellSort(), ^4 MJ  
new QuickSort(), @:dn\{Zsea  
new ImprovedQuickSort(), PFKl6_(  
new MergeSort(), ^ABt g#  
new ImprovedMergeSort(), |D% O`[k+  
new HeapSort() P,Z K  
}; r*q  
R7o'V* d  
public static String toString(int algorithm){ t!8(IR  
return name[algorithm-1]; B_uhNLd  
} u Gmv`R_  
1^ijKn@6  
public static void sort(int[] data, int algorithm) { ;tJ}*!z W  
impl[algorithm-1].sort(data); D_N0j{E  
} 8aqH;|fG}  
} =p e;l  
public static interface Sort { G$^u2wz.  
public void sort(int[] data); \y(ZeNs  
} Ia[4P8Z  
;b5^) S  
public static void swap(int[] data, int i, int j) { zv-9z  
int temp = data; *| 9:  
data = data[j]; |2Y/l~  
data[j] = temp; zH13 ~\  
} * lJkk  
} aBd>.]l?  
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