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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。 C ]Si|D  
插入排序: <";,GaZQ  
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package org.rut.util.algorithm.support; uUE9g  
UV}73Sp  
import org.rut.util.algorithm.SortUtil; 5ep/h5*/  
/** j4FeSGa  
* @author treeroot Lf:uNl*D  
* @since 2006-2-2 oHM ]  
* @version 1.0 *O:r7_ Y0  
*/ :ztr)  
public class InsertSort implements SortUtil.Sort{ ERUt'1F?]  
kE.x+2  
/* (non-Javadoc) I O%6 O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0.r4f'vk  
*/ }MR1^  
public void sort(int[] data) { -Z4{;I[Q@  
int temp; ?EMK8;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 2c<&eX8"  
} $=sXAK9   
} :J}t&t  
} z s Qo$p  
<1w/hy&mWN  
} C0.'_  
eZ a:o1y  
冒泡排序: -3Avs9`5  
[LT^sb  
package org.rut.util.algorithm.support; |6J ?8y  
4@ILw  
import org.rut.util.algorithm.SortUtil; 4vK8kkW1  
GwsY-jf  
/** Zn:R PMk*  
* @author treeroot y`e4;*1  
* @since 2006-2-2 Xqp|VbDca  
* @version 1.0 JXiZB 8}  
*/ 8T;IZ(s  
public class BubbleSort implements SortUtil.Sort{ n<Svw a}  
wI M{pK  
/* (non-Javadoc) I~PDaZP  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) B}OY /J/*8  
*/ Gx?+9C V  
public void sort(int[] data) { p6EDQwlf  
int temp; +c:3o*  
for(int i=0;i for(int j=data.length-1;j>i;j--){ 4A{|[}!  
if(data[j] SortUtil.swap(data,j,j-1); d {lP  
} ?:^mBb) T  
} "%WgT2)m.  
} 0)YbI!  
} Ap&)6g   
J MX6yV  
} "wH)mQnd  
HDM<w+ZxX  
选择排序: %v5R#14[n  
jD) {I  
package org.rut.util.algorithm.support; W]<$0  
K.tlo^#^B[  
import org.rut.util.algorithm.SortUtil; "Z,q?Fc  
kI*(V [i  
/** *VSel4;\t  
* @author treeroot 3zuF{Q2P<  
* @since 2006-2-2 hovGQHg  
* @version 1.0 g*\/N,"z  
*/ 5OM?3M  
public class SelectionSort implements SortUtil.Sort { G@!z$  
MgnM,95  
/* c- $Gpa}M  
* (non-Javadoc) n9LGP2#!  
* y#ON|c /  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 9D@$i<D:  
*/ PDx)S7+w[  
public void sort(int[] data) { fLN!EDq  
int temp; ,Y_{L|:w  
for (int i = 0; i < data.length; i++) { C>^D*C(  
int lowIndex = i; 9z m|Lbj  
for (int j = data.length - 1; j > i; j--) { m(D]qYwh  
if (data[j] < data[lowIndex]) { k0?ZYeHC  
lowIndex = j; Ue5O9;y]u  
} U IJx*  
} t$& Qv)  
SortUtil.swap(data,i,lowIndex); ,lY aA5&I  
} ${~|+zdB  
} Itm8b4e9;  
&0N<ofYX  
} 4}v@C|.p  
5`^o1nGO'  
Shell排序: *E>.)B i  
;sdN-mb  
package org.rut.util.algorithm.support; !}TMiCK  
$<@\-vYvr@  
import org.rut.util.algorithm.SortUtil; ]7sx;KFv  
6,Hqb<(  
/** {B$2"q/~  
* @author treeroot :@ uIxa$[  
* @since 2006-2-2 n_[i0x7#  
* @version 1.0 O/AE}]  
*/ Df07y<>7Q  
public class ShellSort implements SortUtil.Sort{ 1N`vCt]w  
4YG/`P  
/* (non-Javadoc) KHiFJ_3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) F SMj  
*/ KM?1/KZ/~  
public void sort(int[] data) { 9G?ldp8  
for(int i=data.length/2;i>2;i/=2){ /z."l!u6  
for(int j=0;j insertSort(data,j,i); 7D"%%|: h  
} D  _X8-  
} &!.HuRiuC  
insertSort(data,0,1); 9pWy"h$H  
} !jX4`/n2  
`qpc*enf0  
/** MKGS`X]<J  
* @param data ={(j`VSUX0  
* @param j Q}%tt=KD  
* @param i ; ~ 4k7Uz  
*/ jjOgG-Q  
private void insertSort(int[] data, int start, int inc) { jdRq6U^  
int temp; ;Kxbg>U  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); dFW=9ru+MQ  
}  |qcD;  
} a^nAZ  
} uq7T{7~<  
Os),;W0w4  
} #~Q=h`9  
Bl.u=I:Y4  
快速排序: To"dG& h  
D=?{8'R'  
package org.rut.util.algorithm.support; R zR?&J  
+`en{$%%  
import org.rut.util.algorithm.SortUtil; I %_MV  
=6%|?5G  
/** |g)FA_#|<  
* @author treeroot N$aZ== $5  
* @since 2006-2-2 0`hwmDiB"  
* @version 1.0 [5ethM  
*/ 9G+f/k,P  
public class QuickSort implements SortUtil.Sort{ =Z0t :{  
,cHU) j  
/* (non-Javadoc) e29y7:)c=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .CV _\  
*/ Rc$h{0K8  
public void sort(int[] data) { AY2:[ 5cm  
quickSort(data,0,data.length-1); \^532FIw6  
} zok D:c  
private void quickSort(int[] data,int i,int j){ t\y-T$\\  
int pivotIndex=(i+j)/2; ma8wmQ9JR  
file://swap S)\8|ym6!  
SortUtil.swap(data,pivotIndex,j); 9/TY\?U  
a<Uqyilm  
int k=partition(data,i-1,j,data[j]); 9w^zY ;Y  
SortUtil.swap(data,k,j); )@7DsV/M  
if((k-i)>1) quickSort(data,i,k-1); ija: H'j  
if((j-k)>1) quickSort(data,k+1,j); 66:ALFwd7  
s"#]L44N  
} &~~s6   
/** Q |hm1q  
* @param data -e>|kPfv!  
* @param i (i`(>I.(/  
* @param j +cg {[f,J;  
* @return ~t/JCxa  
*/ Hhv$4;&X  
private int partition(int[] data, int l, int r,int pivot) { hY;_/!_  
do{ 8[5|_Eh+  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); Lyoor1   
SortUtil.swap(data,l,r); Pn WD}'0V  
} 3;/?q  
while(l SortUtil.swap(data,l,r); F|eu<^"$ H  
return l; pG yRX_;  
} +$pJ5+v  
7 ^I:=qc72  
} ey1Z/|  
5{l1A (b  
改进后的快速排序: %`\]Y']R  
A3UQJ  
package org.rut.util.algorithm.support; l8wF0|  
?ApRJm:T  
import org.rut.util.algorithm.SortUtil; mvTb~)  
cH"@d^"+q|  
/** gbGTG(:1S  
* @author treeroot "EPD2,%S  
* @since 2006-2-2 HhSjR%6HY;  
* @version 1.0 p5*lEz|$  
*/ =MSu3<y,  
public class ImprovedQuickSort implements SortUtil.Sort { j7/(sf  
"bX4Q4Dq  
private static int MAX_STACK_SIZE=4096; Eb@MfL  
private static int THRESHOLD=10; jxY-u+B  
/* (non-Javadoc) b7$}JCn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) m^tNqJs8  
*/ 4;<DJ.XlN=  
public void sort(int[] data) { h5onRa *7  
int[] stack=new int[MAX_STACK_SIZE]; 0=[0|`x  
Y6eEGo"K.+  
int top=-1; S<oQ}+4[~  
int pivot; 0n5UKtB  
int pivotIndex,l,r; @>O&Cpt  
v]bAWo  
stack[++top]=0; rx:lKoOnB  
stack[++top]=data.length-1; -9G]x{>  
,P@QxnQ   
while(top>0){ lO 2k<  
int j=stack[top--]; { /<4'B  
int i=stack[top--]; Fk$@Yy+}e  
dF,DiRD  
pivotIndex=(i+j)/2; i$O#%12l  
pivot=data[pivotIndex]; XiG88Kwv  
&%e"9v2`  
SortUtil.swap(data,pivotIndex,j); )BLmoJOf  
 U42\.V0  
file://partition 6FjVmje  
l=i-1; 5Rs?CVVb  
r=j; r<(kLpOH%  
do{ E^syrEz  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); /=M.-MU2  
SortUtil.swap(data,l,r); v MWC(m  
} faVS2TN4  
while(l SortUtil.swap(data,l,r); s^PmnFR  
SortUtil.swap(data,l,j); Y'_ D<Mp  
h.b+r~u  
if((l-i)>THRESHOLD){ hEcYpng~  
stack[++top]=i; s1=u{ET  
stack[++top]=l-1; '3%*U*I  
} Y n>{4BZ>#  
if((j-l)>THRESHOLD){ 6D^%'[4t  
stack[++top]=l+1; r}@< K  
stack[++top]=j; 8|<f8Z65!  
} P%!q1`Eke(  
)dg UmN  
} 0*{p Oe/u  
file://new InsertSort().sort(data); Kq6qXc\x  
insertSort(data); WguV{#=H  
} }}s) +d  
/** &ps6s.K  
* @param data N7B}O*;  
*/ AzX(~Qc  
private void insertSort(int[] data) { `q1}6U/k  
int temp; s=jO; K$  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `w=!o.1  
} p;ZDpR  
} f[M"EMy  
} 2$Y3[$  
%0(>!SY  
} 6cZ  C  
UJs?9]x>  
归并排序: j)@oRWL<  
0C7"3l  
package org.rut.util.algorithm.support; EQ~I'#m7  
8)`5P\  
import org.rut.util.algorithm.SortUtil; qid1b b  
"2K|#,%N  
/** V,'FlU  
* @author treeroot XAlD ww  
* @since 2006-2-2 EM~7#Y  
* @version 1.0 B2"+Hwbk  
*/ )XZ,bz*jn  
public class MergeSort implements SortUtil.Sort{ iy9VruT<x  
]=pWZ~A  
/* (non-Javadoc) 3DHvaq q7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {8i}Ow  
*/ L`bo#,eg6  
public void sort(int[] data) { ~l4Q~'  
int[] temp=new int[data.length]; Ot"(uW4$[  
mergeSort(data,temp,0,data.length-1); dK7 ^  
} CY\mU_.b  
y7 <(,uT  
private void mergeSort(int[] data,int[] temp,int l,int r){ /^WE@r[:  
int mid=(l+r)/2; '|+=B u  
if(l==r) return ; .P x,=56$X  
mergeSort(data,temp,l,mid); p!V) 55J*  
mergeSort(data,temp,mid+1,r); @@xF#3   
for(int i=l;i<=r;i++){ `}n0=E  
temp=data; 1 pYsjo~  
} th;]Vo  
int i1=l; *xho  
int i2=mid+1; 0MhxFoFO  
for(int cur=l;cur<=r;cur++){  pe|\'<>i  
if(i1==mid+1) akY6D]M  
data[cur]=temp[i2++]; -hm 9sNox  
else if(i2>r) 6UtG-WHHt  
data[cur]=temp[i1++]; l9,w>]s  
else if(temp[i1] data[cur]=temp[i1++]; f(W,m >.;  
else yl|R:/2V  
data[cur]=temp[i2++]; PK9Qm'W b  
} 0honHP  
} r]Z.`}Kkm  
T&e%/  
} [kQ"6wh8  
y& Gw.N}<r  
改进后的归并排序: A` oa|k!U  
/Ir 7 DZK  
package org.rut.util.algorithm.support; 7YSuB9{M  
@#J H=-06  
import org.rut.util.algorithm.SortUtil; ~9]Vy (L  
W>UjUq);  
/** IrUpExJ  
* @author treeroot 9 ?[4i'  
* @since 2006-2-2 rUhWZta  
* @version 1.0 )Ep@$Gv|S  
*/ -1dIZy  
public class ImprovedMergeSort implements SortUtil.Sort { yzODF>KJ  
:  ,|=Q}  
private static final int THRESHOLD = 10; qrOB_Nz  
([ E#zrz%  
/* 4_Tb)?L+:  
* (non-Javadoc) !G@V<'F  
* A89Y;_4y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4 {uJ||!  
*/ vjY);aQ  
public void sort(int[] data) { }qTv&Z3$  
int[] temp=new int[data.length]; 6!i( \Q*  
mergeSort(data,temp,0,data.length-1); h/w]  
} sT@u3^>  
B/[hi%~  
private void mergeSort(int[] data, int[] temp, int l, int r) { ^!XU+e+:0  
int i, j, k; h:eN>yW  
int mid = (l + r) / 2; w`2_6[,9  
if (l == r) g5?r9e  
return; ~r7DEy|+  
if ((mid - l) >= THRESHOLD) kjQIagw  
mergeSort(data, temp, l, mid); +<vqkc  
else Z%(Df3~gmm  
insertSort(data, l, mid - l + 1); k|)^!BdO  
if ((r - mid) > THRESHOLD) [j]}$f Fe  
mergeSort(data, temp, mid + 1, r); ZC>`ca  
else + ;{rU&  
insertSort(data, mid + 1, r - mid); q>wa#1X)  
`XFX`1  
for (i = l; i <= mid; i++) { Vw6>:l<+<  
temp = data; j=zU7wz)D  
} / i\uwa,  
for (j = 1; j <= r - mid; j++) { 0$Qn#K  
temp[r - j + 1] = data[j + mid]; xV }:M  
} pb$ An<P  
int a = temp[l]; lUy*549,  
int b = temp[r]; IX > j8z[  
for (i = l, j = r, k = l; k <= r; k++) { 96^1Ivd  
if (a < b) { `*.r'k2R  
data[k] = temp[i++]; w%!k?t,*]  
a = temp; .je~qo )  
} else { 5+#?7J1  
data[k] = temp[j--]; J?UZN^  
b = temp[j]; "1=.5:yG  
} D~t"9Z\  
} |>m# m*{S  
} !ds"88:5^  
1VPfa  
/** :d:|7hlNQ  
* @param data Y:#kel<  
* @param l ~`W6O>  
* @param i 2xz%'X%  
*/ #Q!c42}M  
private void insertSort(int[] data, int start, int len) { s0`]!7D<  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q*oA{eZY  
} g6k&c"%IQ(  
} ]y$V/Ij=qK  
} C>\h?<s  
} GhchfI.  
D|8sjp4  
堆排序: 8z3I~yL_`+  
-X6\[I:+A  
package org.rut.util.algorithm.support; '/n%}=a=  
RLeSA\di  
import org.rut.util.algorithm.SortUtil; %<bG%V(  
Q:Nwy(,I  
/** 2!"\;/  
* @author treeroot P*nT\B  
* @since 2006-2-2 @pEO@bbg>  
* @version 1.0 EzeDShN=J  
*/ 0YTtA]|`4  
public class HeapSort implements SortUtil.Sort{ -sGWSC  
{R6Zwjs  
/* (non-Javadoc) HnYFE@Nl:U  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ?Pok-90  
*/ c=U$$|qHV  
public void sort(int[] data) { _g/T H-;^  
MaxHeap h=new MaxHeap(); (tz_D7c$F  
h.init(data); }tS6Z:fOY  
for(int i=0;i h.remove(); WPh |~]by<  
System.arraycopy(h.queue,1,data,0,data.length); m}'t'l4 c  
} UHsrZgIRYT  
o )}<   
private static class MaxHeap{ 3T.M?UG>  
 el*pYI  
void init(int[] data){ W> -E.#!_  
this.queue=new int[data.length+1]; 7.Kjg_N#Tr  
for(int i=0;i queue[++size]=data; s5Bmv\e.i5  
fixUp(size); 4jyr\=42F'  
} wshp{ y  
} qyG636i  
+Hm+ #o  
private int size=0; cM7k){  
1RUbY>K#U  
private int[] queue; >stVsFdV)  
6XxG1]84  
public int get() { h1UlLy 8  
return queue[1]; KE)D =P  
} 3I{ta/(  
1\.zOq#  
public void remove() { P.H/H04+  
SortUtil.swap(queue,1,size--); TF iM[  
fixDown(1); *~lgU4  
} )DZ-vnZ#t0  
file://fixdown ?3E_KGI  
private void fixDown(int k) { ^J}$y7  
int j; ~m;MM)_V  
while ((j = k << 1) <= size) { nluyEK  
if (j < size %26amp;%26amp; queue[j] j++; 4\eX=~C>:  
if (queue[k]>queue[j]) file://不用交换 :pF]TY"K.  
break; la"A$Tbu~  
SortUtil.swap(queue,j,k); G*w W&R)  
k = j; re 1k]  
} $rQFM[  
} QGCdeE$K  
private void fixUp(int k) { r)@&2b"q  
while (k > 1) { ("M#R!3  
int j = k >> 1; CTrs\G  
if (queue[j]>queue[k]) BQJ`vIa  
break; D` `NQ`>A  
SortUtil.swap(queue,j,k); *e"GQd?  
k = j; X!A]V:8dk  
} _=^hnv  
} m-KK {{  
elHarey`f  
} He_(JXTP  
';CuJ XAj  
} [+cnx21{  
E<G@LT  
SortUtil: a]=vq(N'r  
?`*-QG}  
package org.rut.util.algorithm; s2v#evI`+  
Z6/~2S@  
import org.rut.util.algorithm.support.BubbleSort; X.4ZLwX=  
import org.rut.util.algorithm.support.HeapSort; 8JOht(m  
import org.rut.util.algorithm.support.ImprovedMergeSort; {s^ryv_}  
import org.rut.util.algorithm.support.ImprovedQuickSort; ;F]|HD9  
import org.rut.util.algorithm.support.InsertSort; OFL+Q~~C  
import org.rut.util.algorithm.support.MergeSort; j6 d"8oH _  
import org.rut.util.algorithm.support.QuickSort; byj mH  
import org.rut.util.algorithm.support.SelectionSort; V-U  ^O45  
import org.rut.util.algorithm.support.ShellSort; lXk-86[M  
2WECQl=r  
/** ]Q_G /e  
* @author treeroot hv8[_p`>  
* @since 2006-2-2 WQmiG=Dw^  
* @version 1.0 <GmrKdM  
*/ hz|z&vyP  
public class SortUtil { [tf^i:2  
public final static int INSERT = 1; GTIfrqT  
public final static int BUBBLE = 2; iF_r'+j  
public final static int SELECTION = 3; C05{,w?  
public final static int SHELL = 4; cyP* QW[  
public final static int QUICK = 5; qsRfG~Cg  
public final static int IMPROVED_QUICK = 6; "91At b;hJ  
public final static int MERGE = 7; W]Y!ZfGnN  
public final static int IMPROVED_MERGE = 8; @`+$d=rO`  
public final static int HEAP = 9; gsq[ 9  
f(MHU   
public static void sort(int[] data) { ~U*N'>'=)  
sort(data, IMPROVED_QUICK); VGUDUM.8  
} 714nUA872  
private static String[] name={ 3R[J,go  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" e%0#"6}  
}; OZ0%;Y0  
AdS_-Cm  
private static Sort[] impl=new Sort[]{ 0]w[wc <  
new InsertSort(), #YYvc`9  
new BubbleSort(), Ri6 br  
new SelectionSort(), <m gTWv  
new ShellSort(), 1Kf t?g  
new QuickSort(), _ ,1kcDu  
new ImprovedQuickSort(), k<";t  
new MergeSort(), LmdV@gR  
new ImprovedMergeSort(), mb`}sTU).  
new HeapSort() w8#>xV^~  
}; \R6T" U  
HPCA$LD  
public static String toString(int algorithm){ ? /X6x1PN  
return name[algorithm-1]; c(g^*8Pb  
} @O0 vh$3t0  
Nv]/L +i  
public static void sort(int[] data, int algorithm) { ]Tw6Fg1o>  
impl[algorithm-1].sort(data); QN a3S*  
} g UAPjR  
qa`(,iN  
public static interface Sort { A-!qO|E[-  
public void sort(int[] data); R$m?&1K  
} fTtSx_}3H  
vjRD?kF  
public static void swap(int[] data, int i, int j) { x(N} ^Hu  
int temp = data; X.Y)'qSf  
data = data[j]; 8/$iCW  
data[j] = temp; /Z_ [)PTH  
} gm$MEeC  
} I2!HXMrp  
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