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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。 5`t MHgQO  
插入排序: v{2euOFE  
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package org.rut.util.algorithm.support; u6#FG9W7  
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import org.rut.util.algorithm.SortUtil; kZU v/]Y.  
/** ud`!X#e~  
* @author treeroot n`TXm g  
* @since 2006-2-2 9*&RvsrX  
* @version 1.0 }K3!ujvR  
*/ N3U.62  
public class InsertSort implements SortUtil.Sort{ n 97pxD_74  
WAzn`xGxR"  
/* (non-Javadoc) 0D.qc8/V4.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) l!7O2Ai5  
*/ 77?D ~N[  
public void sort(int[] data) { 7#pu(:T$  
int temp; aMq|xHZ  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ]IQ`.:g=9  
} vj#Y /B  
} ]f}#&]<(T  
} iD"9,1@~n  
o?]N2e&(  
} l =`?Im  
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冒泡排序: %HWebZ-yY  
V'Z Z4og  
package org.rut.util.algorithm.support; uW{;@ 7N  
9\J6G8b>|I  
import org.rut.util.algorithm.SortUtil; @o/126(k  
*= ;M',nx  
/** _X/`7!f  
* @author treeroot p*ic@n*G  
* @since 2006-2-2 rAwuWM@BIg  
* @version 1.0 ==XO:P  
*/ hT DFIYV  
public class BubbleSort implements SortUtil.Sort{ Lbwc2Q,.-  
TDY2 M  
/* (non-Javadoc) H="E#AC%8/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) *Y\C5L ]  
*/ {wq~+O  
public void sort(int[] data) { ]hHL[hoFC  
int temp; 9esMr0*=  
for(int i=0;i for(int j=data.length-1;j>i;j--){ a?K3/0G  
if(data[j] SortUtil.swap(data,j,j-1); ZOIx+%/Vd#  
} ^V;h>X|  
} WETnrA"N  
} %xuJQuCqf  
} lHI ;fR  
'2=$pw  
} }Kt1mmo:`  
f8JWg9 m  
选择排序: ^Ee"w7XjD  
YQ _]Jv k  
package org.rut.util.algorithm.support; >JUOS2  
E/5/5'gBJO  
import org.rut.util.algorithm.SortUtil; zho$g9*  
,)beK*Iw  
/** 8?z7!k]  
* @author treeroot J&w'0  
* @since 2006-2-2 #*|Gp_l+%  
* @version 1.0 +5xVgIk#  
*/ 2}<_l 2  
public class SelectionSort implements SortUtil.Sort { !=SBeq  
T P#Hq  
/* _7=LSf,9  
* (non-Javadoc) mYRsM s  
* Mq,2S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ih\=mB  
*/ ra]lC7<H  
public void sort(int[] data) { c80!Ub@  
int temp; WMk;-,S!)  
for (int i = 0; i < data.length; i++) { s+ a} _a:  
int lowIndex = i; }Y`D^z~  
for (int j = data.length - 1; j > i; j--) { l1#F1q`^t  
if (data[j] < data[lowIndex]) { }T1.~E  
lowIndex = j; X :wfmb  
} ~[ZRE @  
} E9 6` aF{]  
SortUtil.swap(data,i,lowIndex); `SM37({c  
} *w,C5 f  
} lFT` WO  
`~;`q  
} NO'37d  
^X\SwgD2w  
Shell排序: Uz$.sa  
5u=$m^@{  
package org.rut.util.algorithm.support; /_{B_2i/>  
7%)KB4(\_  
import org.rut.util.algorithm.SortUtil; BH3%dh :9  
;'i>^zX`  
/** yq<mE(hS?  
* @author treeroot J)n^b  
* @since 2006-2-2 Ef2i#BoZ  
* @version 1.0 sn-P&"q  
*/ ;,7/>Vt  
public class ShellSort implements SortUtil.Sort{ K|V<e[X[V  
kC8M2|L  
/* (non-Javadoc) tcD DX'S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6i7+.#s  
*/ dh0nB  
public void sort(int[] data) { ,C;%AS/  
for(int i=data.length/2;i>2;i/=2){ SDHJX8Hq  
for(int j=0;j insertSort(data,j,i); dW#T1mB  
} 5h7M3s  
} D@?Tq,= [  
insertSort(data,0,1); >p?Vv0*  
} ^jB17z[  
ZgI?#e  
/** efX iZ  
* @param data kT12  
* @param j Dhze2q)o  
* @param i Ra)AQ n  
*/ Zp qb0ro  
private void insertSort(int[] data, int start, int inc) { S17 c#6vT  
int temp; MfG8=H2#|  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); PW QRy  
} ["N_t:9I  
} kR/Etm5_  
} +rWcfXOHM  
7 <<`9,  
} g|=1U  
t`Lh(`  
快速排序: }-N4D"d4o  
5=hMTztf!!  
package org.rut.util.algorithm.support; .g?Ppma  
6R'z3[K9  
import org.rut.util.algorithm.SortUtil; kkU#0p?7  
5Ei4$T  
/** r(OH  
* @author treeroot 'aqlNBG*  
* @since 2006-2-2 q#_<J1)z  
* @version 1.0 Y{D?&x%yq  
*/ _h^er+d!_  
public class QuickSort implements SortUtil.Sort{ %}[/lIxaE  
# ~(lY}  
/* (non-Javadoc) $i;m9_16  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TW~%1G_v  
*/ v7b +  
public void sort(int[] data) { lEXI<b'2  
quickSort(data,0,data.length-1); T o$D [-  
} sa w  
private void quickSort(int[] data,int i,int j){ WbJ  
int pivotIndex=(i+j)/2; =k\Qx),Ir  
file://swap y"Ios:v@-  
SortUtil.swap(data,pivotIndex,j); 5a%i%+;N  
]QSQr *  
int k=partition(data,i-1,j,data[j]); ap wA  
SortUtil.swap(data,k,j); +N2R'Phv  
if((k-i)>1) quickSort(data,i,k-1); WGA"e   
if((j-k)>1) quickSort(data,k+1,j); Nz;f| 2h  
#&,~5  
} [pX cKN  
/** Vi<6i0  
* @param data ,u S)N6'b6  
* @param i THy{r_dx  
* @param j '4)4*3z,  
* @return ,Q,3^v-  
*/ bZ[ay-f6oK  
private int partition(int[] data, int l, int r,int pivot) { 'b:UafV  
do{ 4Hq6nT/  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ->r udRQ  
SortUtil.swap(data,l,r); mt\pndTy7!  
} fRK=y+gl@  
while(l SortUtil.swap(data,l,r); Rc(E';uc  
return l; 7;@o]9W  
} w~ O)DhC  
*hlinQKs  
} 7bL48W<QD  
M,sZ8eeq  
改进后的快速排序: \2[sUY<W  
ffG1QvC|M  
package org.rut.util.algorithm.support; %TYe]^/'y  
1 EwCF  
import org.rut.util.algorithm.SortUtil; jhB+ ]  
|\T!,~  
/** v(`5exWV  
* @author treeroot of/' 9Tj  
* @since 2006-2-2 chXTFLC~  
* @version 1.0 UHS{X~CS e  
*/ p+}eP|N  
public class ImprovedQuickSort implements SortUtil.Sort { d6ckvD[  
=VGRM#+D  
private static int MAX_STACK_SIZE=4096; >2ny/AK|  
private static int THRESHOLD=10; O2S{*D={  
/* (non-Javadoc) (".WJXB\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8V@\$4@b!#  
*/ C] M{  
public void sort(int[] data) { [[ uZCKi  
int[] stack=new int[MAX_STACK_SIZE]; UUEbtZH;  
IPk"{T3  
int top=-1; \4Z"s[8}  
int pivot; EfqC_,J*3  
int pivotIndex,l,r; 4\y>pXML-U  
DAQozhP8  
stack[++top]=0; [E;~Y_l  
stack[++top]=data.length-1; ;Swj`'7  
g-<[* nF  
while(top>0){ 5@EX,$h  
int j=stack[top--]; wpa^]l  
int i=stack[top--]; VWW(=j  
O#`y;%  
pivotIndex=(i+j)/2; ,B$e'KQ  
pivot=data[pivotIndex]; 1i}p?sU  
pykRi#[UrX  
SortUtil.swap(data,pivotIndex,j); nmoC(| r  
t'*2)U  
file://partition q(Zu;ecBN  
l=i-1; S#l)|c_~  
r=j; -~_;9[uV  
do{ $: qrh66  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); O4T_p=Xc  
SortUtil.swap(data,l,r); Idr|-s%l6'  
} ;fB!/u  
while(l SortUtil.swap(data,l,r); w"AO~LF  
SortUtil.swap(data,l,j); v<E_n;@9k  
ZmZ7E]c  
if((l-i)>THRESHOLD){ r?}L^bK  
stack[++top]=i; -z'6.I cO  
stack[++top]=l-1; &?M'(` ~  
} =' &TqiIv"  
if((j-l)>THRESHOLD){ l-M .C8N  
stack[++top]=l+1; <^"0A  
stack[++top]=j; QA#Jx  
} W{nDmG`yp  
YLid2aF  
} -9yWf8;  
file://new InsertSort().sort(data); PY[!H<tt  
insertSort(data); Vc&xXtm[v  
} M4K>/-9X+V  
/** NLZUAtx(  
* @param data 79}Qj7  
*/ .`+N+B(4  
private void insertSort(int[] data) { {oRR]>  
int temp; Gt;U9k|i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); m-R`(  
} yD( v_J*  
} _Sult;y"u  
} ^i6`w_/  
XT\Q"=FD  
} \"l/D?+Q  
2$1D+(5;  
归并排序: 0]2@T=*kTY  
*7K)J8kq  
package org.rut.util.algorithm.support; vR'rYDtU@  
0ae}!LO  
import org.rut.util.algorithm.SortUtil; \g:Bg%43h  
gkld}t*U  
/** m ?jF:] ^  
* @author treeroot E\XD~  
* @since 2006-2-2 |1UJKJwX  
* @version 1.0 y5N,~@$r  
*/ { u1\M  
public class MergeSort implements SortUtil.Sort{ MJG)fFl] O  
nj7\vIR7  
/* (non-Javadoc) jT:kk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]`\~(*;[W9  
*/ wsAijHjJI!  
public void sort(int[] data) { 9P#<T7  
int[] temp=new int[data.length]; $GX9-^og=T  
mergeSort(data,temp,0,data.length-1); B2)SNhF2Y  
} ?#VkzT  
Fr]B]Hj  
private void mergeSort(int[] data,int[] temp,int l,int r){ b_-?ZmV^r  
int mid=(l+r)/2; LAv!s/O$=  
if(l==r) return ; Awlw6?   
mergeSort(data,temp,l,mid); 5db9C}0  
mergeSort(data,temp,mid+1,r); S3&lkN5  
for(int i=l;i<=r;i++){ Tw!_=zy(Gw  
temp=data; )X5en=[)O  
} Schvwlm~i  
int i1=l; 7=pJ)4;ZA  
int i2=mid+1; kT4Oal+4  
for(int cur=l;cur<=r;cur++){ a'YK1QX  
if(i1==mid+1) |v= */e  
data[cur]=temp[i2++]; YE1X*'4  
else if(i2>r) Uf<IXx&;  
data[cur]=temp[i1++]; <jtu/U]78|  
else if(temp[i1] data[cur]=temp[i1++]; I 2*\J)|f  
else Ui05o7xg~p  
data[cur]=temp[i2++]; QxeK-x^  
} }yMA s  
} H]&^>Pvh  
ZR@PqS+O/  
} N.|uPq$R  
ZqJyuTPv  
改进后的归并排序: {{Z3M>Q  
_sC kBDl-  
package org.rut.util.algorithm.support; "oo j;  
5)<}a&;{  
import org.rut.util.algorithm.SortUtil; {%XDr,myd  
Z)RV6@(  
/** Ib0@,yS[  
* @author treeroot c~{)vL0K  
* @since 2006-2-2 H@BU/{  
* @version 1.0 +BkmI\  
*/ afj[HJbY  
public class ImprovedMergeSort implements SortUtil.Sort { t^(wbC  
^.(i!BG'  
private static final int THRESHOLD = 10; ^y3snuLtE  
+4m~D`fqt[  
/* uz[5h0c  
* (non-Javadoc) }?=4pGsI  
* ~{f[X3m^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) h . R bdG  
*/ =aJb}X  
public void sort(int[] data) { -aF\ u[b  
int[] temp=new int[data.length]; B&4NdL/  
mergeSort(data,temp,0,data.length-1); 9xIz[`)i.  
} ("ulL5  
G| .5.FK^  
private void mergeSort(int[] data, int[] temp, int l, int r) { Yp8GW1@  
int i, j, k; Nk&$b  
int mid = (l + r) / 2; aW7)}"j4  
if (l == r) O`Ge|4  
return; KImazS^  
if ((mid - l) >= THRESHOLD) zua=E2  
mergeSort(data, temp, l, mid); jY ~7-  
else K*fh`Kz  
insertSort(data, l, mid - l + 1); %TA@-tK=  
if ((r - mid) > THRESHOLD) `=VN\W^&  
mergeSort(data, temp, mid + 1, r); m{ C  
else ;_?RPWZ;MO  
insertSort(data, mid + 1, r - mid); 3ew`e"s  
;-@v1I;  
for (i = l; i <= mid; i++) { q8P$Md-=b1  
temp = data; OAd}#R\U  
} ( | X?  
for (j = 1; j <= r - mid; j++) { )|CF)T-  
temp[r - j + 1] = data[j + mid]; kSH|+K\M4  
} !(-S?*64l  
int a = temp[l]; sU 5/c|&  
int b = temp[r]; >(39K  
for (i = l, j = r, k = l; k <= r; k++) { QzX|c&&>u2  
if (a < b) { y759S)U>>p  
data[k] = temp[i++]; B kWoK/f4  
a = temp; 2'5%EQW;0y  
} else { 8sGaq [  
data[k] = temp[j--]; *:hHlH* t1  
b = temp[j]; 5p`.RWls  
} D_)n\(3  
} zTQTmO  
} c&n.JV   
'}.Z' %;  
/** !pG_MO  
* @param data xcA5  
* @param l xix: = a  
* @param i ]Y@B= 5e/  
*/ n*vzp?+Y  
private void insertSort(int[] data, int start, int len) { l~i&r?,]^  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); % C.I2J`_  
} yp.\KLq8)  
} UA]U_P$c  
} Jx_BjkF  
} s6| S#  
y?*4SLy  
堆排序: MH=;[| N  
Zcg@]Sx(I  
package org.rut.util.algorithm.support; K84Ve Ae  
L! DK2,  
import org.rut.util.algorithm.SortUtil; =w <;tb  
sGs_w:Hn  
/** 7.N~e}p 8  
* @author treeroot \OX;ZVb?5  
* @since 2006-2-2 fNTe_akp  
* @version 1.0 eJ O+MurO  
*/ ^CWxYDG*  
public class HeapSort implements SortUtil.Sort{ }Uc)iNU  
>p|tIST  
/* (non-Javadoc) mcFJ__3MAV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) x\MzMQ#Bf  
*/ xgV(0H}Mf  
public void sort(int[] data) { 0.}WZAYy~  
MaxHeap h=new MaxHeap(); ygn]f*;?kw  
h.init(data); QKt[Kte  
for(int i=0;i h.remove(); EvQMt0[?EW  
System.arraycopy(h.queue,1,data,0,data.length); zUCtH*  
} c^s%t:)K  
Wz]ny3K[.  
private static class MaxHeap{ 89 6oz>  
N(@B3%H2/J  
void init(int[] data){ #`(-Oj2hH  
this.queue=new int[data.length+1]; (^4V]N&  
for(int i=0;i queue[++size]=data; heN?lmC  
fixUp(size); ueD_<KjE=  
} 4itadQS  
} %;-] HI  
u~y0H  
private int size=0; fce~a\y0  
r[ }5<S Q  
private int[] queue; ,8^QV3  
y m~  
public int get() { f7_EqS=(  
return queue[1]; E+$%88  
} PA_54a9/<  
7_*k<W7|  
public void remove() { ]> dCt<  
SortUtil.swap(queue,1,size--); "ke>O'   
fixDown(1); g=5vnY  
} XV|u!'Ey  
file://fixdown _2N7E#m"S  
private void fixDown(int k) { "Smek#l  
int j; dnW#"  
while ((j = k << 1) <= size) { g4-UBDtYt  
if (j < size %26amp;%26amp; queue[j] j++; K[~fpQGbV1  
if (queue[k]>queue[j]) file://不用交换 mv;;0xH  
break; y6C3u5`  
SortUtil.swap(queue,j,k); Hk8pKpn3  
k = j; O<KOsu1WW  
} B{ptP4As-  
} ljw(cUM  
private void fixUp(int k) { N&]GP l0  
while (k > 1) { /+g9C(['  
int j = k >> 1; ?wpS  
if (queue[j]>queue[k]) )W1tBi  
break; D`e6#1DbJ  
SortUtil.swap(queue,j,k); Svun RUE-f  
k = j; uKL4cr@  
} @j/|U04_ Z  
} .Fe_Z)i>h  
vl,Ff9  
} 3{*nG'@Mal  
Q eZg l!  
} 2:4:Q[{A  
JsZLBq*lP  
SortUtil: 9\J.AAk~/  
P/e6b .M  
package org.rut.util.algorithm; gXP)YN  
aR0'$*3E  
import org.rut.util.algorithm.support.BubbleSort; M8p6f)l3  
import org.rut.util.algorithm.support.HeapSort; 7i@vj7K  
import org.rut.util.algorithm.support.ImprovedMergeSort; Z| f~   
import org.rut.util.algorithm.support.ImprovedQuickSort; '1r<g\ l  
import org.rut.util.algorithm.support.InsertSort; +IkL=/';#  
import org.rut.util.algorithm.support.MergeSort; )] C"r_  
import org.rut.util.algorithm.support.QuickSort; io1hUZ  
import org.rut.util.algorithm.support.SelectionSort; ]b6gZ<  
import org.rut.util.algorithm.support.ShellSort; }S_#*N)i  
zY^QZceq"  
/** X]T&kdQ6q  
* @author treeroot s`63 y&Z[  
* @since 2006-2-2 31> $;"  
* @version 1.0 \lBY4j+;  
*/ ]XS[\qo  
public class SortUtil {  3 UX/  
public final static int INSERT = 1; 4?2$~\ x  
public final static int BUBBLE = 2; qwomc28O  
public final static int SELECTION = 3; >o_cf*nx  
public final static int SHELL = 4; /nas~{B  
public final static int QUICK = 5; r;C BA'Z  
public final static int IMPROVED_QUICK = 6; &hco3HfW  
public final static int MERGE = 7; (aTpBXGr=  
public final static int IMPROVED_MERGE = 8; n=8DC&  
public final static int HEAP = 9; XK=-$2n  
- D&d1`N4  
public static void sort(int[] data) { 76BA1x+G  
sort(data, IMPROVED_QUICK); c*c 8S~6  
} C >gC 99  
private static String[] name={ 8[\ ~}Q6  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" ^|j @' @L  
}; *<"#1H/q  
GJo`9  
private static Sort[] impl=new Sort[]{ oT}-i [=}  
new InsertSort(), wk[4Qsk<  
new BubbleSort(), hqwDlapTt  
new SelectionSort(), p1`") $  
new ShellSort(), p.@_3^#|  
new QuickSort(), > %B7/l$  
new ImprovedQuickSort(), X7Z=@d(  
new MergeSort(), lV ra&5  
new ImprovedMergeSort(), :|PI_ $4H  
new HeapSort() .wvgH i  
}; $z[r (a^a  
kX8Ey  
public static String toString(int algorithm){ tB/'3#o  
return name[algorithm-1]; ,\^RyHg  
} uJ9 hU`h  
4ynGXJmMlR  
public static void sort(int[] data, int algorithm) { U6K!FOND  
impl[algorithm-1].sort(data); h( MNH6 B1  
} (D~NW*,9  
<Dq7^,}#  
public static interface Sort { {wwkbc*  
public void sort(int[] data); e.l3xwt>$  
} t}x^*I$*  
mVVL[z2+  
public static void swap(int[] data, int i, int j) { sOb=+u$$9  
int temp = data; m(rd\3d  
data = data[j]; &++tp5  
data[j] = temp; FL?Ndy"I  
} h4geoC_W2  
} G+V?c1Me  
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