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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。 J9 =gv0  
插入排序: * Z:PB%d5  
~?&ijhZ  
package org.rut.util.algorithm.support; G'py)C5;  
f lB,_  
import org.rut.util.algorithm.SortUtil; \+u qP:Ty  
/** biG9?  
* @author treeroot 84[^#ke  
* @since 2006-2-2 r9Z/y*q  
* @version 1.0 u7=[~l&L  
*/ 'JMa2/7CG  
public class InsertSort implements SortUtil.Sort{ $a A.d^  
uJOW%|ZN`  
/* (non-Javadoc) C#~MR+;  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oSl>%}  
*/ ZYsFd_  
public void sort(int[] data) {  +o  
int temp; >&&xJ5  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); UYQ$c }Z5  
} Pp/{keEye  
} ! -c*lb  
} _6m3$k_[MJ  
jVINc=o  
} K*Jtyy}r  
K|G $s  
冒泡排序: ja;5:=8A5  
-"e}YN/  
package org.rut.util.algorithm.support; &XsLp&Do2  
x3s^u~C)(w  
import org.rut.util.algorithm.SortUtil; Wn^^Q5U#  
L)}V [j#  
/** x 5SQ+7  
* @author treeroot >D/~|`=p  
* @since 2006-2-2 #& wgsGV8C  
* @version 1.0 ?Qig$  
*/ zcKC5vqb  
public class BubbleSort implements SortUtil.Sort{ ElXe=5L\#  
i'wF>EBz  
/* (non-Javadoc) V@S/!h+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?i~/gjp  
*/ }BJ1#<  
public void sort(int[] data) { "Cc"y* P  
int temp; wP/9z(US  
for(int i=0;i for(int j=data.length-1;j>i;j--){ RC(D=6+[C  
if(data[j] SortUtil.swap(data,j,j-1); @WHd(ka!  
} @S7=6RKa[  
} H040-Q;S'  
} =BS'oBn^6  
} XQOprIJ U  
F?} *ovy  
} HiG/(<bs9O  
f hG2  
选择排序: }qv-lO  
d5y2Y/QO  
package org.rut.util.algorithm.support; C[nr>   
~Ls I<z  
import org.rut.util.algorithm.SortUtil; -^H5z+"^  
~{YgM/c|dt  
/** :WIf$P?X  
* @author treeroot WWcm(q =  
* @since 2006-2-2 Noxz kpMF  
* @version 1.0 &t/<yq}{  
*/ Ro]IE|Fv  
public class SelectionSort implements SortUtil.Sort { %"Q!5qH&  
;lH,bX~5  
/* %_MR.J+m2  
* (non-Javadoc) TDIOK  
* [7 `Dgnmq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tgtoK|.  
*/ FRt/{(jro  
public void sort(int[] data) { ,?<h] !aQ  
int temp; m]d6@"Z.  
for (int i = 0; i < data.length; i++) { W lQ=CRY  
int lowIndex = i; Kw0V4UF  
for (int j = data.length - 1; j > i; j--) { 0~b6wuFl  
if (data[j] < data[lowIndex]) { e K1m(E.=  
lowIndex = j; pE/3-0;}N  
} ,,_K/='m  
} N#['fg'  
SortUtil.swap(data,i,lowIndex); +N$7=oGC  
} /v)!m&6]>  
} }r~l7 2 `  
0D3+R1>_D  
} k*3_) S -  
|C6(0fgWd  
Shell排序: 0aTbzOn&  
G\N"rG=  
package org.rut.util.algorithm.support; 7]xz8t  
qm8n7Z/  
import org.rut.util.algorithm.SortUtil; &@utAuI  
Usf"K*A  
/** dh;MpE  
* @author treeroot 0 ,Qj:  
* @since 2006-2-2 y?z_^ppj  
* @version 1.0 :.[5('  
*/ |vDoqlW  
public class ShellSort implements SortUtil.Sort{ l[ ": tG  
R^M (fC  
/* (non-Javadoc) \1`DaQp7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0/P-> n~  
*/ v#%>uLl  
public void sort(int[] data) { B%rr}Ro1e  
for(int i=data.length/2;i>2;i/=2){ H"GE\  
for(int j=0;j insertSort(data,j,i); Be>c)90bO_  
} O<Sc.@~  
} wJos'aTmE  
insertSort(data,0,1); k3/JQ]'D  
} Y0X94k.u  
{iIg 4PzrU  
/** #D LT-G0  
* @param data h[je_^5  
* @param j B,vHn2W  
* @param i yp2'KES>  
*/ TQ\wHJ  
private void insertSort(int[] data, int start, int inc) { <x0uO  
int temp; @7l=+`.i  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); kYA'PW/[ )  
} 2mG&@E  
} hXQg=Sj  
} $:u7Dv}\  
>RL6Jbo|  
} <W=[ sWJ  
#!=>muZt  
快速排序: :Bv&)RK  
F {*9[jY  
package org.rut.util.algorithm.support; {uwk[f{z  
*Nf4bH%MN  
import org.rut.util.algorithm.SortUtil; \p@nH%@v  
|+;KhC  
/** xH`j7qK.  
* @author treeroot $~G0#JL  
* @since 2006-2-2 h*\TCl)  
* @version 1.0 ^=izqh5S  
*/ 3<)@ll  
public class QuickSort implements SortUtil.Sort{ LF9aw4:>Ou  
,LW(mdIe(  
/* (non-Javadoc) s9_`Wrg?  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /[nZ#zj!3  
*/ =Qj+Ug'  
public void sort(int[] data) { Qor{1_h)+9  
quickSort(data,0,data.length-1); Yn$>QS 4  
} Jp.3KA>  
private void quickSort(int[] data,int i,int j){ rq'##`H  
int pivotIndex=(i+j)/2; 3vRL g b  
file://swap #zSi/r/=1  
SortUtil.swap(data,pivotIndex,j); 9#s95R O  
TM/|K|_  
int k=partition(data,i-1,j,data[j]); iB}LnC:  
SortUtil.swap(data,k,j); ek(kY6x:  
if((k-i)>1) quickSort(data,i,k-1); D,GPn%Wqi  
if((j-k)>1) quickSort(data,k+1,j); <r7qq$  
e"o6C\c  
} L.T gJv43  
/** ?HEtrX,q  
* @param data _ r^90  
* @param i vh. Wm?qQ  
* @param j *,pZ fc  
* @return 6cQeL$,SQ  
*/ +;:aG6q+  
private int partition(int[] data, int l, int r,int pivot) { "9U+h2#]  
do{ \~z?PA.$  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); \'It,PN  
SortUtil.swap(data,l,r); =2;mxJ#o  
} '.%iPMM  
while(l SortUtil.swap(data,l,r); MfNpQ:]c\  
return l; Jv 6nlK`  
} ~ F?G5cN5  
x^M5D+o  
} 0gv3v@QO  
P^K?E  
改进后的快速排序: \'s$ZN$k  
xJ=ZQ)&]  
package org.rut.util.algorithm.support; QLF,/"  
;l/}Or2  
import org.rut.util.algorithm.SortUtil; +K$5tT6b  
XQ0#0<  
/** { .aK{ V  
* @author treeroot k7yv>iN  
* @since 2006-2-2 G!!-+n<  
* @version 1.0 hapB! ~M?  
*/ TdNuD V  
public class ImprovedQuickSort implements SortUtil.Sort { Xb(CH#*{z  
5eiZs  
private static int MAX_STACK_SIZE=4096; q9>Ls-k  
private static int THRESHOLD=10; b!4N)t>gl  
/* (non-Javadoc) 2d5}`>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q9W~7  
*/ 9atjK4+o  
public void sort(int[] data) {  Z;j/K  
int[] stack=new int[MAX_STACK_SIZE]; jy\W_CT  
>G-8FL  
int top=-1; PZ  
int pivot; )XmCy"xx  
int pivotIndex,l,r; pgz:F#>  
klK-,J  
stack[++top]=0; #;\L,a|>*  
stack[++top]=data.length-1; tsTR2+GZS  
P[Y{LKAbb  
while(top>0){ Ax5mP8S  
int j=stack[top--]; ?r -\%_J_(  
int i=stack[top--]; `DgaO-Dg3  
#Acon7R p  
pivotIndex=(i+j)/2; u#a%(  
pivot=data[pivotIndex]; ysSjc  
qy7hkq.uX  
SortUtil.swap(data,pivotIndex,j); fbh6Ls/  
+ >T7Q`64  
file://partition 8N=%X-R%  
l=i-1; H$NP1^5!  
r=j; rmY,v  
do{ XysFwi  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); k%EWkM)?  
SortUtil.swap(data,l,r); 2gQY8h8  
} V;>9&'Z3  
while(l SortUtil.swap(data,l,r); JwN}Jm  
SortUtil.swap(data,l,j); wb(*7 &eP:  
nuf@}W>y  
if((l-i)>THRESHOLD){ ^?$D.^g  
stack[++top]=i; \]Y\P~n  
stack[++top]=l-1; l 8O"w&  
} E/"YId `A  
if((j-l)>THRESHOLD){ y;,=a jrF  
stack[++top]=l+1; Ez zTJ>  
stack[++top]=j; O{lIs_1.Z  
} 8fJR{jD(s  
~/^y.SsWM  
} /[\6oa  
file://new InsertSort().sort(data); r+imn&FK8  
insertSort(data); g8%MOhg  
} 4mEzcwo'  
/** $Nj'OJSj%  
* @param data @+}rEe_(  
*/ JfI aOhKs]  
private void insertSort(int[] data) { (\Rwf}gyR  
int temp; IY];Ss&i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); > ]>0KQfO  
} ((Vj]I% ;  
} Hfh@<'NL]  
} MC4284A5  
;V|M3  
} l%^h2 o  
o `b`*Z  
归并排序: [Z#+gh  
Of1IdE6~  
package org.rut.util.algorithm.support; 0L!er%GM  
4fu'QZ(}  
import org.rut.util.algorithm.SortUtil;  5Waw?1GL  
z[WC7hvU  
/** fm3(70F\  
* @author treeroot J)-T:.i|0  
* @since 2006-2-2 ?F!EB4E\y}  
* @version 1.0 ^dFh g_GhF  
*/ s9uL<$,'  
public class MergeSort implements SortUtil.Sort{ C}n'>],p  
~Y\QGuT  
/* (non-Javadoc) ^{),+S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) eeZIa`.sX  
*/ 3CA|5A.Pa  
public void sort(int[] data) { p@#]mVJ>9  
int[] temp=new int[data.length]; !nec 7  
mergeSort(data,temp,0,data.length-1); gE\A9L~b  
} " <<A  
7sj<|g<h(_  
private void mergeSort(int[] data,int[] temp,int l,int r){ U5|B9%:&  
int mid=(l+r)/2; /m97CC#+  
if(l==r) return ; `-~`<#E[  
mergeSort(data,temp,l,mid); o^6jyb!j  
mergeSort(data,temp,mid+1,r); K|`+C1!  
for(int i=l;i<=r;i++){ j%#?m2J}  
temp=data; [m~b[ZwES  
} fr8Xoa%1=  
int i1=l; H":/Ckok  
int i2=mid+1; .6\T`6H=a  
for(int cur=l;cur<=r;cur++){ 7*+Km'=M  
if(i1==mid+1) YkSuwx@5_q  
data[cur]=temp[i2++]; r])Z9bbi  
else if(i2>r) nHrP>zN  
data[cur]=temp[i1++]; :_>\DJ'>  
else if(temp[i1] data[cur]=temp[i1++]; KA`0g=  
else [}{w  
data[cur]=temp[i2++]; 9X!ET!  
} h8em\<;  
} [.{^"<Z<  
Vre=%bGw  
} dAL0.>|`0  
(RExV?:  
改进后的归并排序: Kl2}o|b   
L {!ihJr  
package org.rut.util.algorithm.support; :lNg:r$4  
X2i*iW<  
import org.rut.util.algorithm.SortUtil; PXa5g5 !  
s\6N }[s  
/** p Z"o@';!  
* @author treeroot p=2zS.  
* @since 2006-2-2 =D{B}=D\IM  
* @version 1.0 Dh2#$[/@1  
*/ 3Hs$]nQ_X  
public class ImprovedMergeSort implements SortUtil.Sort { kzMa+(fu  
w nWgy4:  
private static final int THRESHOLD = 10; j+$ M?Z^  
"<qEXX  
/* b9`iZ  
* (non-Javadoc) Jth=.9mrM  
* `(3SfQ-  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ooY\t +  
*/ aQga3;S!  
public void sort(int[] data) { %?Rs*-F.~1  
int[] temp=new int[data.length]; 4e}{$s$Xx  
mergeSort(data,temp,0,data.length-1); *vb^N0P  
} `n6/ A)  
Yhe+u\vGs\  
private void mergeSort(int[] data, int[] temp, int l, int r) { "2%>M  
int i, j, k; sA3UeTf  
int mid = (l + r) / 2; k'g$2  
if (l == r) p<q].^M  
return; AfN&n= d K  
if ((mid - l) >= THRESHOLD) <8f(eP\*F  
mergeSort(data, temp, l, mid); u %'y_C3  
else  QGXQ{  
insertSort(data, l, mid - l + 1); B "*`R!y  
if ((r - mid) > THRESHOLD) `v~!H\q  
mergeSort(data, temp, mid + 1, r); $Y6 3!*  
else V`by*s  
insertSort(data, mid + 1, r - mid); #XcU{5Qm5  
-/zp&*0gcx  
for (i = l; i <= mid; i++) { -]/7hN*v  
temp = data; A])OPqP{  
} O"\nR:\  
for (j = 1; j <= r - mid; j++) { Cw%BZ  
temp[r - j + 1] = data[j + mid]; RE 9nU%!  
} %Z7%jma  
int a = temp[l]; fSjs?zd`  
int b = temp[r]; l~rb]6E  
for (i = l, j = r, k = l; k <= r; k++) { oKRFd_r+  
if (a < b) { alc]  
data[k] = temp[i++]; +ZclGchw  
a = temp; "?P[9x}  
} else { L@nebT;\'  
data[k] = temp[j--]; {M [~E|@D  
b = temp[j]; ^Z#@3 =  
} , |l@j%  
} wYjQ V?,  
} #sZIDn J#  
1+a@k  
/** &Xv1[nByU  
* @param data ]rnXNn;  
* @param l {\EOo-&A  
* @param i J,(7.+`~#  
*/ 0aogBg_@K  
private void insertSort(int[] data, int start, int len) { mL$f[  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); v77fQ0w3  
} S7CV w,2  
} ' l|R5   
} FN!1| 'VK  
} -TTs.O8P|<  
x#mtS-sw2Q  
堆排序: E?cZ bn*>`  
781]THY=  
package org.rut.util.algorithm.support; 1Cv#nhmp  
84^[/d;!  
import org.rut.util.algorithm.SortUtil; E M Q4yK  
dMV=jJ%Y  
/** bK4&=#Zh  
* @author treeroot x,\!DLq:p  
* @since 2006-2-2 q$T8bh,2  
* @version 1.0 4sIX O  
*/ NI.`mc6X d  
public class HeapSort implements SortUtil.Sort{ {fU?idY)c  
*T1~)z}j<  
/* (non-Javadoc) y(}Eko4u5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \2 >?6zs  
*/ nvt$F%+  
public void sort(int[] data) { Xm|ib%no  
MaxHeap h=new MaxHeap(); h55>{)(E  
h.init(data); MwAJ(  
for(int i=0;i h.remove(); 8teJ*sz  
System.arraycopy(h.queue,1,data,0,data.length); .YR8v1Cp  
} 'I v_mig  
MM gx|"  
private static class MaxHeap{ 4,~tl~FD  
a$$ Wt<&Y  
void init(int[] data){ QPs:RhV7  
this.queue=new int[data.length+1]; [7.agI@=  
for(int i=0;i queue[++size]=data; YE\K<T jH  
fixUp(size); '$[Di'*;  
} `Mk4sKU\a  
} ")%r}:0  
[!~}S  
private int size=0; q@ZlJ3%l,  
M{E{NK  
private int[] queue; NXI[q 'y  
hcyO97@r  
public int get() { .S7:;%qL6  
return queue[1]; "SR5wr   
} [PWL<t::c  
6/1$< !WH  
public void remove() { V`bs&5#Sx  
SortUtil.swap(queue,1,size--); ehT%s+aUw  
fixDown(1); 7ZsA5%s=,  
} -DCa   
file://fixdown Y(r@v  
private void fixDown(int k) { n8u*JeN  
int j; !ni>\lZ  
while ((j = k << 1) <= size) { ]JMl|e  
if (j < size %26amp;%26amp; queue[j] j++; =~jA oOC@  
if (queue[k]>queue[j]) file://不用交换 p `P~i&_  
break; pbLGe'  
SortUtil.swap(queue,j,k); d~Mg vh'  
k = j; i_ QcC  
} BJ5}GX!  
} BQ#L+9%  
private void fixUp(int k) { jg_n7  
while (k > 1) { @Y-TOCadT  
int j = k >> 1; 0^&!6R  
if (queue[j]>queue[k]) 2|{V,!/cvG  
break; l r~gG3   
SortUtil.swap(queue,j,k); N wtg%;  
k = j; `@XehSQ  
} Wi$dZOcSJ  
} cj g.lzY H  
.Dw,"VHP  
} ~xDw*AC-  
c-8!#~M(  
} z<&m*0WYA  
Lh ap4:  
SortUtil: /!T> b:0  
R#eg^7HfX  
package org.rut.util.algorithm; CDdkoajBa  
-^SA8y  
import org.rut.util.algorithm.support.BubbleSort; |/T43ADW  
import org.rut.util.algorithm.support.HeapSort; ?KP}#>Ba@  
import org.rut.util.algorithm.support.ImprovedMergeSort; 7bF*AYM  
import org.rut.util.algorithm.support.ImprovedQuickSort; Y7SacRO  
import org.rut.util.algorithm.support.InsertSort;  CdZ BG  
import org.rut.util.algorithm.support.MergeSort; v\%G|8+]  
import org.rut.util.algorithm.support.QuickSort; ?WFh',`:  
import org.rut.util.algorithm.support.SelectionSort; | vu>;*K  
import org.rut.util.algorithm.support.ShellSort; i9m*g*"2  
b$- e\XB!  
/** YI@Fhr &NU  
* @author treeroot s 3r=mp{  
* @since 2006-2-2 o2uj =Gnx  
* @version 1.0 z$[C#5+2  
*/ FxRXPt FK  
public class SortUtil { r;gP}H ?  
public final static int INSERT = 1; y%cO#P@  
public final static int BUBBLE = 2; -F1- e+=  
public final static int SELECTION = 3; (OmH~lSO.  
public final static int SHELL = 4; k \qiF|B)Z  
public final static int QUICK = 5; e@n!x}t8  
public final static int IMPROVED_QUICK = 6; L?RF;jf  
public final static int MERGE = 7; nE|@IGH  
public final static int IMPROVED_MERGE = 8; Em^ (  
public final static int HEAP = 9; yL1CZ_  
q_t4OrLr=  
public static void sort(int[] data) { ?c#$dc"  
sort(data, IMPROVED_QUICK); ,pt%) c  
} 8;"*6vHZ  
private static String[] name={ (^n*Am;zlH  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Q@QFV~  
}; s;1h-Oq (  
:&w{\-0{  
private static Sort[] impl=new Sort[]{ `<fh+*  
new InsertSort(), +j[oEI`e  
new BubbleSort(), OB^Tq~i  
new SelectionSort(), PQ U]l"A  
new ShellSort(), ,)fkr]`<  
new QuickSort(), \2kPq>hu  
new ImprovedQuickSort(), ^g>1U5c  
new MergeSort(), x\@*6 0o  
new ImprovedMergeSort(), z@VP:au  
new HeapSort() L,]=vba'$  
}; Tg ?x3?kw  
Hs(D/&6%  
public static String toString(int algorithm){ .v\\Tq&"|  
return name[algorithm-1]; ~;#MpG;e  
} "!UVs+)]  
R;}22s  
public static void sort(int[] data, int algorithm) { yR71%]*.  
impl[algorithm-1].sort(data); =A!S/;z>  
} [L~@uAMw:  
K%j&/T j1  
public static interface Sort { vO@s$qi  
public void sort(int[] data); -kj< 1~YW  
} b~0N^p[&%  
.tXtcf/  
public static void swap(int[] data, int i, int j) { {}Ejt:rKN  
int temp = data; E]} n(  
data = data[j]; .dmi#%W  
data[j] = temp; l!~ mxUb  
} $2#7D* Rx  
} SpSnoVI  
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