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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。 LQHL4jRXU  
插入排序: . %s U)$bH  
~_-]> SI  
package org.rut.util.algorithm.support; jM&di  
+Q[uq!<VJk  
import org.rut.util.algorithm.SortUtil; L;* s-j6y  
/** NNF"si\FE  
* @author treeroot K8aqC{  
* @since 2006-2-2 0:`|T jf_  
* @version 1.0 KW(a@X  
*/ 0|RofL&o  
public class InsertSort implements SortUtil.Sort{ p"#\E0GM  
+rJ6DZ  
/* (non-Javadoc) a3>/B$pE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8[KKi~A  
*/ G.H8 ><%  
public void sort(int[] data) { [Q0V5P~Q'  
int temp; >;^/B R=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Lx wi"ndP  
} rNR7}o~qo  
} ~PI2G 9  
} gLB(A\yG  
R7/S SuG6\  
} Hi A E9  
.P$m?p#  
冒泡排序: RbX9PF"|+  
HbegdbTJ  
package org.rut.util.algorithm.support; Z^ :_,aJ?  
]*#i_dho7  
import org.rut.util.algorithm.SortUtil; 4LKpEl.=  
-;7xUNQ  
/** N<9 c/V  
* @author treeroot @"@|O>KJ  
* @since 2006-2-2 x%l(0K  
* @version 1.0 ? `p/jA  
*/ {+WBi(=W  
public class BubbleSort implements SortUtil.Sort{ M bWby'  
&{V|%u}v  
/* (non-Javadoc) $<v4c5r]O  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vN'+5*Cgy6  
*/ 1ysfpX{=  
public void sort(int[] data) { r8s>s6vm  
int temp; He(65ciT<O  
for(int i=0;i for(int j=data.length-1;j>i;j--){ B/wD~xC?x  
if(data[j] SortUtil.swap(data,j,j-1); y>EW,%leC  
} 509T?\r  
} `eM ZhY o  
} Byc;r-Q5V  
} QN#"c  
:C*}Yg  
} dd  
wa8jr5/k"  
选择排序: !:&SfPv  
M0w Uis:`  
package org.rut.util.algorithm.support; 9;+&}:IVS  
ij$NTY=u  
import org.rut.util.algorithm.SortUtil; H~Uf2A)C  
]lwf6'  
/** ,`bW (V  
* @author treeroot ] 0X|_bU  
* @since 2006-2-2 Cw,a)XB  
* @version 1.0 #c:s 2EL  
*/ 93]63NY  
public class SelectionSort implements SortUtil.Sort { [c3!xHt5O  
juR>4SH  
/* \p(S4?I7  
* (non-Javadoc) t`8Jz~G`  
* |8'}mjs.Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) j2D!=PK;  
*/ oJTEN}fL  
public void sort(int[] data) { 1Vy8eI`4  
int temp; A;;#]]48  
for (int i = 0; i < data.length; i++) { =Fz mifTc  
int lowIndex = i; )Z:-qH  
for (int j = data.length - 1; j > i; j--) { j\>&]0-Iq  
if (data[j] < data[lowIndex]) { bo=H-d|  
lowIndex = j; !0l|[c4 e>  
} wO,qFY  
} (2;Aqx5i  
SortUtil.swap(data,i,lowIndex); 5;XC!Gz  
} 8'Q+%{?1t  
} -9om,U`t  
t\/H.Hb  
} &}u_e`A  
x<l 5wh  
Shell排序: (]q ([e  
96\FJHt Z  
package org.rut.util.algorithm.support; /(~ HHNnh  
&b@_ah+f  
import org.rut.util.algorithm.SortUtil; OAkqPG&w  
rPB Ju0D"  
/** ~;HASHu  
* @author treeroot ~~{lIO)&  
* @since 2006-2-2 @g[ijs\  
* @version 1.0 pss')YP.  
*/ >7WT4l)7!b  
public class ShellSort implements SortUtil.Sort{ F[c oa5  
;ab[YMkH  
/* (non-Javadoc) H2],auBY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 2po8n _  
*/ Ge)G.>c  
public void sort(int[] data) { KYTXf+oh  
for(int i=data.length/2;i>2;i/=2){ F42^Uoaz  
for(int j=0;j insertSort(data,j,i); i`i`Hu>  
} 9+(b7L   
} s3Bo'hGxG  
insertSort(data,0,1); HxR5&o  
} -n@,r%`UK  
p!E*A NwX  
/** @[D5{v)S  
* @param data =?CIC%6m  
* @param j "U9e)a0v  
* @param i #: EhGlq8  
*/ *=md!^x`  
private void insertSort(int[] data, int start, int inc) { ^E, #}cW  
int temp; +v%+E{F$+  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); h9d*N9!;M  
} Zc";R!At  
} M\ wCZG  
} *k\ ;G?  
D{7sfkcJ  
} %M_F/O  
b 2\J<Nw  
快速排序: -R9{Ak  
Z%sTj6Th  
package org.rut.util.algorithm.support; fda2dY;  
Nt tu)wr  
import org.rut.util.algorithm.SortUtil; k-4z2qB  
UN<$F yb  
/** 9AWP` ~l`  
* @author treeroot 2(Xu?W 7d  
* @since 2006-2-2 ;Gp9 ?0  
* @version 1.0 KsTE)@ F:  
*/ L{ej<0yr  
public class QuickSort implements SortUtil.Sort{ 7#HSe#0J  
nr>Yj?la  
/* (non-Javadoc) iOAn/[^xk  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {Zs EYUP  
*/ vqF=kB"P  
public void sort(int[] data) { RP^L.X(7^  
quickSort(data,0,data.length-1); _Kli~$c& M  
} B%x?VOdBE  
private void quickSort(int[] data,int i,int j){ t@2MEo  
int pivotIndex=(i+j)/2; uxX 3wY;M  
file://swap -g"Wi@Qr  
SortUtil.swap(data,pivotIndex,j); kB?Uw#  
-Zg.o$  
int k=partition(data,i-1,j,data[j]); }_}LaEYAo  
SortUtil.swap(data,k,j); A)#Fyde  
if((k-i)>1) quickSort(data,i,k-1); jlyuu  
if((j-k)>1) quickSort(data,k+1,j); do l8O  
1yS: `  
} !h^_2IX  
/** P#:nXc$  
* @param data 9+Wf*:*EW  
* @param i *aYuuRx  
* @param j &`g^b^i  
* @return r.]IGE|  
*/ 8NWuhRRrw  
private int partition(int[] data, int l, int r,int pivot) { 4?_^7(%p  
do{ xjYH[PgfX  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); R2Q1Rk#  
SortUtil.swap(data,l,r); $}H,g}@0  
} }+:X=@Z@  
while(l SortUtil.swap(data,l,r); Wq25,M'  
return l; >+%0|6VSb  
} Gfep m$*%  
a 4? c~bs  
} u`*1OqU  
[t?:CgI)E  
改进后的快速排序: B?d+^sz]  
1_mqPMm  
package org.rut.util.algorithm.support; @><8YN^)%  
*"V) h I5  
import org.rut.util.algorithm.SortUtil; - ^>7\]  
] `;Fc8$  
/** S;u 2B_/  
* @author treeroot 0|mC k  
* @since 2006-2-2 b:x~Jz#%2  
* @version 1.0 &'m&'wDt:  
*/ =)! ~t/  
public class ImprovedQuickSort implements SortUtil.Sort { m&- -$sr  
IRsyy\[kp8  
private static int MAX_STACK_SIZE=4096;  cj|Urt  
private static int THRESHOLD=10; c`UizZ  
/* (non-Javadoc) 7Y 4!   
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lgefTT GX)  
*/ O}z-g&e.U  
public void sort(int[] data) { s[t?At->  
int[] stack=new int[MAX_STACK_SIZE]; i&L!?6 5-f  
[n$6 T  
int top=-1; R E9 `T  
int pivot; P\$%p-G  
int pivotIndex,l,r; > q8)~  
:f0#4'f  
stack[++top]=0; vSo,,~ F  
stack[++top]=data.length-1; 1(WBvAPS  
NqN}] nu6  
while(top>0){ XrGP]k6.^  
int j=stack[top--]; I$ ?.9&.&  
int i=stack[top--]; &Y 2Dft_K  
tf>"fU\P  
pivotIndex=(i+j)/2; B# o6UO\  
pivot=data[pivotIndex]; z7HM/<WY  
}k @S mO8  
SortUtil.swap(data,pivotIndex,j); |0VZ1{=*  
$v1_M1  
file://partition Z)<lPg!YAR  
l=i-1; G^le91$  
r=j; (J.k\d   
do{ YLb$/6gj6  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); }`+9ie7]/  
SortUtil.swap(data,l,r); && b;Wr  
} tcJN`N  
while(l SortUtil.swap(data,l,r); rw[Ioyr-  
SortUtil.swap(data,l,j); CEBa,hp@  
,:qk+  
if((l-i)>THRESHOLD){ aqv'c j>  
stack[++top]=i; cT nC  
stack[++top]=l-1; )h0b}HMW)  
} f%rZ2h)  
if((j-l)>THRESHOLD){ {=ATRwUL  
stack[++top]=l+1; D"&Sd@a{  
stack[++top]=j; HbJ^L:/  
} @DSKa`  
zxeT{AFPr?  
} $t0JfDd6Ky  
file://new InsertSort().sort(data); &"^U=f@v  
insertSort(data); ==EB\>g|  
} x7/";L>  
/** l_Zx'm  
* @param data x kdC -S  
*/ "6Z(0 iu:{  
private void insertSort(int[] data) { P=Su)c  
int temp; M[(pLYq:  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); `Ay:;I  
} ?@;#|^k9  
} y2=yh30L0E  
} N! I$Qtr,  
pj7v{H+  
} e0hY   
&d\ y:7  
归并排序: W:K '2j  
< pZwM  
package org.rut.util.algorithm.support; |qBcE  
a4pewg'  
import org.rut.util.algorithm.SortUtil; 4eJR=h1  
w"C,oo3  
/** :aH5=@[!y  
* @author treeroot zE~Xx p  
* @since 2006-2-2 }_5R9w]"  
* @version 1.0 tS-gaT`T  
*/ =}.gU WV  
public class MergeSort implements SortUtil.Sort{ [v\m)5  
lc3Gu78 A/  
/* (non-Javadoc) _n_()at)  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +}PN+:yV  
*/ `evF?t11X  
public void sort(int[] data) { 5lM2nhlf'b  
int[] temp=new int[data.length]; o4wSt6gBcJ  
mergeSort(data,temp,0,data.length-1); =[LorvX+  
} @w`wJ*I4,  
_ j`tR:  
private void mergeSort(int[] data,int[] temp,int l,int r){ X-#&]^d  
int mid=(l+r)/2; 2=/-,kOL_  
if(l==r) return ; {Wu[e,p  
mergeSort(data,temp,l,mid); *QV"o{V  
mergeSort(data,temp,mid+1,r); >H ?k0M`L  
for(int i=l;i<=r;i++){ 52zE -SY  
temp=data; ZvMU3])u  
} 0[e!/*_V  
int i1=l; D <R_eK  
int i2=mid+1; @bJIN]R  
for(int cur=l;cur<=r;cur++){ AI`k }sA~  
if(i1==mid+1) Id&e'  
data[cur]=temp[i2++]; *0to,$ n  
else if(i2>r) ^\&FowpP  
data[cur]=temp[i1++]; .6xMLo,R  
else if(temp[i1] data[cur]=temp[i1++]; /;Hr{f jl{  
else {/H<_  
data[cur]=temp[i2++]; zRou~Kxi  
} *tgu@9b  
} G!;PV^6x  
D}LM(s3li7  
} y.c6r> }  
U3Z=X TB  
改进后的归并排序: 8-Y*b89  
8-B7_GoJ+B  
package org.rut.util.algorithm.support; YWvD+  
-5 D<zP/  
import org.rut.util.algorithm.SortUtil; T7^;!;i`X  
N+@ Ff3M  
/** yCvtglAJ4  
* @author treeroot cw{TS  
* @since 2006-2-2 6#!CBY^{  
* @version 1.0 KE@+I.x  
*/ | @$I<  
public class ImprovedMergeSort implements SortUtil.Sort { 9$HBKcO  
6]Is"3ca  
private static final int THRESHOLD = 10; ; Byt'S  
{;u,04OVK  
/* 4P k%+l  
* (non-Javadoc)  2Y23!hw  
* bo/9k 4N3  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) @$ Zh^+x!  
*/ ]i$y;]f  
public void sort(int[] data) { wlJi_)!  
int[] temp=new int[data.length]; b4i=%]v8  
mergeSort(data,temp,0,data.length-1); rZJJ\ , |  
} G rp{ .  
$R/@8qnP W  
private void mergeSort(int[] data, int[] temp, int l, int r) { =g9n =spAn  
int i, j, k; dAx ? ,  
int mid = (l + r) / 2; U?le|tK  
if (l == r) HS/.H,X  
return; t{jY@J T|  
if ((mid - l) >= THRESHOLD) $|-Lw!)D  
mergeSort(data, temp, l, mid); "u!gfG?oH  
else *VsVCUCz5*  
insertSort(data, l, mid - l + 1); p%>sc  
if ((r - mid) > THRESHOLD) Wvf>5g)?  
mergeSort(data, temp, mid + 1, r); Fm0d0j  
else X$we\t  
insertSort(data, mid + 1, r - mid); S F*C'  
CF{b Yf^%  
for (i = l; i <= mid; i++) { $h{m")]  
temp = data; cZNcplt8  
} E=ijt3  
for (j = 1; j <= r - mid; j++) { Hyy b0c^=  
temp[r - j + 1] = data[j + mid]; !Ud'(iGa  
} [g/D<g5O  
int a = temp[l]; v"o"W[  
int b = temp[r]; QPDh!A3T  
for (i = l, j = r, k = l; k <= r; k++) { V2Vr7v=Y"  
if (a < b) { ~~OFymQ%?q  
data[k] = temp[i++]; &< BBP n@\  
a = temp; noxJr/A]  
} else { "CJ~BJI%  
data[k] = temp[j--]; \N*([{X  
b = temp[j]; w+ R/>a( ]  
} kL*P 3 0  
} \9VF)Y.ke  
} T?pS2I~  
RhE~-b[X  
/** V%oZT>T3  
* @param data f ,cd=vGj  
* @param l q*3OWr  
* @param i Q M0B6F  
*/ '[{<a Eo  
private void insertSort(int[] data, int start, int len) { Jp=fLo 9  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <=*f  
} bqcCA9 1  
} eO!9;dJ  
} 5daq}hsQs  
} SndR:{  
faQmkO  
堆排序: l a3B`p  
WA`A/`taT  
package org.rut.util.algorithm.support; .G O0xnm  
g_Z tDxz  
import org.rut.util.algorithm.SortUtil; =fcg4h5(  
S[Du >  
/** MET9rT  
* @author treeroot ?_NKyiu95  
* @since 2006-2-2 yH/A9L,Z  
* @version 1.0 :o'x?]  
*/ R=z])  
public class HeapSort implements SortUtil.Sort{ $'J3 /C7  
+=3=%%?C  
/* (non-Javadoc) &W2*'$j"_  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oidf\%!mvR  
*/ 4ijtx)SA  
public void sort(int[] data) { ^jL '*&l  
MaxHeap h=new MaxHeap(); Q\$3l'W  
h.init(data); ORExI.<`W  
for(int i=0;i h.remove(); 9bM\ (s/  
System.arraycopy(h.queue,1,data,0,data.length); Pyo|Sgk  
} IVR%H_uz  
_'=,c"  
private static class MaxHeap{ V(7,N(  
P%3pM*.  
void init(int[] data){ q(KjhM  
this.queue=new int[data.length+1]; n|i:4D  
for(int i=0;i queue[++size]=data; cLtVj2Wb  
fixUp(size); $^]K611w9  
} s2<!Zb4  
} 7r:h_r-  
6r)P&J  
private int size=0; 7L!JP:v   
"aJHCi~l  
private int[] queue; kaBjA*  
da$FY7  
public int get() { }3(!kW  
return queue[1]; d][ Wm  
} $L/`nd  
Y}?8  
public void remove() { 4#$#x=:  
SortUtil.swap(queue,1,size--); <Ky-3:pxeM  
fixDown(1); *8}b&4O~  
} P'W} ]mCD  
file://fixdown 98[uRywI  
private void fixDown(int k) { /5@YZ?|#2  
int j; uFkl^2  
while ((j = k << 1) <= size) { fLDrit4_Q  
if (j < size %26amp;%26amp; queue[j] j++; $RD~,<oEm  
if (queue[k]>queue[j]) file://不用交换  384n1?  
break; *;<fh,wOk  
SortUtil.swap(queue,j,k); 7({)ou x  
k = j; 2b"*~O;  
} E>~R P^?Uz  
} U&^q#['  
private void fixUp(int k) { ? x)^f+:9|  
while (k > 1) { VvhfD2*T  
int j = k >> 1; pKSCC"i&j  
if (queue[j]>queue[k]) H/,KY/>i  
break; D!j/a!MaKk  
SortUtil.swap(queue,j,k); }[p{%:tP  
k = j; &.A_d+K&  
} {U5sRM|I  
} JF=R$!5  
v:O{"s  
} &[E\2 E  
xR+vu>f  
} cO?*(e1m=  
oi #B7  
SortUtil: s QDgNJbU  
jPh<VVQ$@  
package org.rut.util.algorithm; BA;r%?MRL  
*^?tr?e%I<  
import org.rut.util.algorithm.support.BubbleSort; &#p1ogf:  
import org.rut.util.algorithm.support.HeapSort; %cF`x_h[j  
import org.rut.util.algorithm.support.ImprovedMergeSort; Y>x{ [er  
import org.rut.util.algorithm.support.ImprovedQuickSort; (:o F\  
import org.rut.util.algorithm.support.InsertSort; MAa9JA8kw)  
import org.rut.util.algorithm.support.MergeSort; v+ $3  
import org.rut.util.algorithm.support.QuickSort; +=tdgw/  
import org.rut.util.algorithm.support.SelectionSort; ]7HR U6$  
import org.rut.util.algorithm.support.ShellSort; sW>%mnx  
66=[6U9 *  
/** AL]gK)R  
* @author treeroot )nm+_U  
* @since 2006-2-2 >y%H2][  
* @version 1.0 \u[x<-\/6  
*/ :V/".K-:J  
public class SortUtil { ~ 'ZwD/!e  
public final static int INSERT = 1; Wt.DL mO  
public final static int BUBBLE = 2;  _){|/Zd  
public final static int SELECTION = 3; zIa={tU  
public final static int SHELL = 4; I9?\Jbqg  
public final static int QUICK = 5; $QJ3~mG2  
public final static int IMPROVED_QUICK = 6; J0sD?V|{1~  
public final static int MERGE = 7; @c~Z0+Ji  
public final static int IMPROVED_MERGE = 8; ?9 huuJ s7  
public final static int HEAP = 9; 4D65VgVDM  
!HTOE@  
public static void sort(int[] data) { }?[];FB  
sort(data, IMPROVED_QUICK); U9 iI2$  
} cU;Bm}U  
private static String[] name={ HUKrp*Hv  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 54 $^ldD  
}; C[FHqo9M?H  
l*ltS(?  
private static Sort[] impl=new Sort[]{ yfl?\X{  
new InsertSort(), 1W|jC   
new BubbleSort(), I~7iIUD  
new SelectionSort(), W8W7<ml0A  
new ShellSort(), /-M:6  
new QuickSort(), HLyA zB~r  
new ImprovedQuickSort(), rm-d),Zt  
new MergeSort(), rPk|2l,E,3  
new ImprovedMergeSort(), ! ._q8q\  
new HeapSort() rWht},-|1  
}; CE"/&I  
Ip8ml0oG  
public static String toString(int algorithm){ 4[lFur H  
return name[algorithm-1]; w:\} B'u  
} >LBA0ynh {  
fe\lSGmf  
public static void sort(int[] data, int algorithm) { dIC\U  
impl[algorithm-1].sort(data); :qm\FsO  
} %lCZ7z2o  
5]O{tSj  
public static interface Sort { u`|%qRt  
public void sort(int[] data); "#C2+SKM1  
} ZTR9e\F  
 /  
public static void swap(int[] data, int i, int j) { }Uy QGRZ=  
int temp = data; '/O:@P5qY  
data = data[j]; TFXBN.?9T  
data[j] = temp; 7(@xk_Pl  
} dN2JOyS  
} tpWGmj fo>  
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