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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。 EbZRU65J}O  
插入排序: q{gt2OWqX  
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package org.rut.util.algorithm.support; =\GuIH2  
0!!b(X(  
import org.rut.util.algorithm.SortUtil; (vMC.y5  
/** wg\*FfQn  
* @author treeroot $@<qaR{t\  
* @since 2006-2-2 8.3888  
* @version 1.0 B#9rqC  
*/ ^R',P(@oL  
public class InsertSort implements SortUtil.Sort{ -]\cUQ0  
:_E q(r  
/* (non-Javadoc) x2(!r3a  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) .>NhC"  
*/ >DeG//rv  
public void sort(int[] data) { P$?3\`U;  
int temp; 20h|e+3  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ?&W1lYY  
} c%%r  
} xs_l+/cZ  
} ~GZ!;An  
`!rH0]vy  
} UE33e(Q<  
(F@.o1No%  
冒泡排序: 28>PmH]7  
]y= ff6Q  
package org.rut.util.algorithm.support; Ch8w_Jf1yx  
zY6{ OP!#  
import org.rut.util.algorithm.SortUtil; R{uq8NA- W  
O*^=  
/** WlVp|s{TYP  
* @author treeroot STmn%&  
* @since 2006-2-2 I%.KFPV  
* @version 1.0 (ds-p[`[m  
*/ 9t:P1  
public class BubbleSort implements SortUtil.Sort{ a=}JW]  
S(<r-bV<  
/* (non-Javadoc) %upnXRzw  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) EkS7j>:  
*/ 9N5ptdP.d  
public void sort(int[] data) { d:jD  
int temp;  yG -1g0  
for(int i=0;i for(int j=data.length-1;j>i;j--){ eq +t%  
if(data[j] SortUtil.swap(data,j,j-1); $ K1 /^  
} vcTWe$;Q  
} *IL x-D5qr  
} h$7rEs  
} ZS[(r-)$F  
k9H7(nS{  
} O]rAo  
~"F83+RDe  
选择排序: CMn&1  
cz<8Kb/XV  
package org.rut.util.algorithm.support; NfqJ>[}I+  
GjlA\R^e  
import org.rut.util.algorithm.SortUtil; -{H; w=9  
}? j>V  
/** 2(~Y ^_  
* @author treeroot )f(.{M  
* @since 2006-2-2 wG6@. ;3  
* @version 1.0 3";Rw9  
*/ DrE +{Spm  
public class SelectionSort implements SortUtil.Sort { 2K?~)q&t*  
m:|jv|f  
/* Esh3 cn4  
* (non-Javadoc) NMq#D$T  
* $OOZ-+8  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vpR^G`/  
*/ I`Goc!5t  
public void sort(int[] data) { *((wp4b  
int temp; Itn7Kl  
for (int i = 0; i < data.length; i++) { H{Tt>k  
int lowIndex = i; |Y#KMi ~  
for (int j = data.length - 1; j > i; j--) { :.KN;+tP  
if (data[j] < data[lowIndex]) { *h6Lh]7  
lowIndex = j; g}HB|$P7  
} F&?55@b  
} `tZu~ n  
SortUtil.swap(data,i,lowIndex); hm#S4/=#  
} i oCoFj  
} Fr{u=0 X  
n^<3E; a  
} u;1/.`NPB  
V/w:^@5+p  
Shell排序: ~<b/%l>h1  
)X*?M?~\  
package org.rut.util.algorithm.support; p0Cp\.  
`CCuwe<v  
import org.rut.util.algorithm.SortUtil; WmU5YZ(mAq  
WXz'H),R  
/** ;M,u,KH)/  
* @author treeroot n#@/A  
* @since 2006-2-2 VA4>!t)  
* @version 1.0 ShXk\"  
*/ yh9fHN)F  
public class ShellSort implements SortUtil.Sort{ _hP siZY9  
N[e QT  
/* (non-Javadoc) cBICG",TA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r(sQI# P  
*/ "-aak )7w  
public void sort(int[] data) { JNhHQvi\  
for(int i=data.length/2;i>2;i/=2){ w`Q"mx*  
for(int j=0;j insertSort(data,j,i); 0Y rdu,c  
} RiHOX&-7  
} 4dy2m!  
insertSort(data,0,1); a^yBtb~,P  
} |Z%I3-z_DS  
Xk#"rM< Y  
/** @\-i3EhR  
* @param data b=:$~N@Y  
* @param j (!F Uu  
* @param i f tBbO8e  
*/ =gI;%M\'  
private void insertSort(int[] data, int start, int inc) { 8`bQ,E+2  
int temp; |$[WnYP  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); a[TR_ uR  
} IT,d(UV_  
} uK6_HvHuy  
} 3f'dBn5  
3L2@C%  
} .Q'/e>0  
q^{Z"ifL  
快速排序: k2>gnk0  
zqEMR>px  
package org.rut.util.algorithm.support; Uh.XL=wY  
+<p?i]3CHe  
import org.rut.util.algorithm.SortUtil; -QH[gi{%`  
oK3uGPi  
/** % :?_N  
* @author treeroot &P8 Run  
* @since 2006-2-2 vCC}IDd  
* @version 1.0 rEI]{?eoF  
*/ YG2rJY+*  
public class QuickSort implements SortUtil.Sort{ NOOP_:(7H  
a'R)3:S  
/* (non-Javadoc) Vp3 9`m-W  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) )c9]}:W&  
*/ 5 `:+NwXS2  
public void sort(int[] data) { U3SF'r8  
quickSort(data,0,data.length-1); oicett=5  
} P3[+c4  
private void quickSort(int[] data,int i,int j){ HVb9YU+  
int pivotIndex=(i+j)/2; h&|wqna  
file://swap }z/;^``  
SortUtil.swap(data,pivotIndex,j); 5+U2@XV  
(nP 6Xq  
int k=partition(data,i-1,j,data[j]); SB5DL_q  
SortUtil.swap(data,k,j); \Ol3kx|  
if((k-i)>1) quickSort(data,i,k-1); |7IlYy&:  
if((j-k)>1) quickSort(data,k+1,j); ibDMhW$n  
|&IS ZFSv  
} _=0;5OrK1X  
/** GH%'YY3|  
* @param data (W~jr-O^  
* @param i )tQG5.to  
* @param j e'<pw^I\  
* @return S@suPkQ<>  
*/ nJ/wtw  
private int partition(int[] data, int l, int r,int pivot) { F?j;3@z[A  
do{ N*t91 X  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); r4Ygy/%  
SortUtil.swap(data,l,r); [BS3y`c  
} y^; =+Z  
while(l SortUtil.swap(data,l,r); uA;3R\6?  
return l; ]+\@_1<ZI  
} /BWJ)6#H  
MWSx8R)PN  
} mT57NP  
8kZ ~  
改进后的快速排序: B`Q.<Lqu  
.8is! TT  
package org.rut.util.algorithm.support; o l 67x  
1jZ:@M :  
import org.rut.util.algorithm.SortUtil; rI&GM |  
Zl]Zy}p*+  
/** w>I>9O}(`  
* @author treeroot 7^k`:Z  
* @since 2006-2-2 +Ux)m4}j  
* @version 1.0 E-,74B&H  
*/ A.9,p  
public class ImprovedQuickSort implements SortUtil.Sort { W>b(hVBE  
&]~z-0`$!  
private static int MAX_STACK_SIZE=4096; 7 q<UJIf  
private static int THRESHOLD=10; )>LQ{ X.  
/* (non-Javadoc) {]ZZ]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) `n8) o%E9  
*/ 8$avPD3jx  
public void sort(int[] data) { <i'4EnO  
int[] stack=new int[MAX_STACK_SIZE]; SdUtAC2  
*(ex:1sW  
int top=-1; qE6:`f  
int pivot; ?uUK9*N  
int pivotIndex,l,r; :W5*fE(i  
]B>Y  +  
stack[++top]=0; b?-%Uzp<  
stack[++top]=data.length-1; 5YIi O7@4  
+MC>?rr_u  
while(top>0){ K5(?6hr;  
int j=stack[top--]; e,Xvt5  
int i=stack[top--]; /U<-N'|  
Df;FOTTi%  
pivotIndex=(i+j)/2; =SLP}bP{:  
pivot=data[pivotIndex]; /LhAQpUQT5  
XgKtg-,  
SortUtil.swap(data,pivotIndex,j); 9bjjo;A  
@f0~a  
file://partition LBtVK, ?  
l=i-1; q`09   
r=j; )8oI  s  
do{ wgSA6mQZ  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); >]"5K<-1  
SortUtil.swap(data,l,r); ~Dr/+h:^\  
} gcr,?rE<  
while(l SortUtil.swap(data,l,r); zQ xZR}'  
SortUtil.swap(data,l,j); sSOI5W3A  
+-,Q>`  
if((l-i)>THRESHOLD){ IoNZ'g?d  
stack[++top]=i; MoA2Cp;8X  
stack[++top]=l-1; GFvZdP`s4  
} NTiJEzW}  
if((j-l)>THRESHOLD){ '6{q;Bxo  
stack[++top]=l+1; 1rC8] M.N  
stack[++top]=j; cWgiFv  
} 9A\J*OU  
kgK7 T  
} }jTEgog  
file://new InsertSort().sort(data); v:CYf_  
insertSort(data); YP~d1BWvf  
} -$;H_B+.  
/** 6+IOJtj  
* @param data O:q}<ljp  
*/ 5L|yF"TI#  
private void insertSort(int[] data) { qB@]$  
int temp; }.gDaxj  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); uf`o\wqU  
} ~/[cZY @  
} po"M$4`9  
} {AIP\  
RrLQM!~  
} 5<4njo?k  
N!;Y;<Ro_  
归并排序: E?z 3&C  
6fPuTQ}fY>  
package org.rut.util.algorithm.support; ,e>C)wq;  
M#})  
import org.rut.util.algorithm.SortUtil; /'E+(Y&:J  
!`,6E`Y#  
/** c@ En4[a'  
* @author treeroot * ok89 ad  
* @since 2006-2-2 O<f_-n@G|  
* @version 1.0 JU<<,0  
*/ ix^:qw;  
public class MergeSort implements SortUtil.Sort{ yqlkf$?  
u 8U>R=M  
/* (non-Javadoc) P%pB]d.qpi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H` Q_gy5Z(  
*/ i1vBg}WHN  
public void sort(int[] data) { OjMDxG w  
int[] temp=new int[data.length]; e kI1j%fO  
mergeSort(data,temp,0,data.length-1); `]WU=Ss  
} wias ]u|  
Pc? d@tm  
private void mergeSort(int[] data,int[] temp,int l,int r){ |Uy hH^  
int mid=(l+r)/2; (5-"5<-@R  
if(l==r) return ; AyNl,Xyc4  
mergeSort(data,temp,l,mid); %Iv+Y$'3B  
mergeSort(data,temp,mid+1,r); L7n->8Qk  
for(int i=l;i<=r;i++){ |\?-k  
temp=data; 3X0^xUA6  
} * _C6. %{  
int i1=l; ,0<|&D  
int i2=mid+1; QEUg=*3W=  
for(int cur=l;cur<=r;cur++){ } 5OlX  
if(i1==mid+1) ,a$LT   
data[cur]=temp[i2++]; 4s`*o/it  
else if(i2>r) 3z&,>CEX  
data[cur]=temp[i1++]; Z i7(lG  
else if(temp[i1] data[cur]=temp[i1++]; d7Q. 'cyQ  
else "5XD+qi  
data[cur]=temp[i2++]; ,n &|+&  
} 4x8mJ4[H^  
} I$qL=  
JEY%(UR8  
} sF_.9G)S0  
_}jj>+zA`  
改进后的归并排序: Gpe h#Q4x  
yuFuYo&[?v  
package org.rut.util.algorithm.support; ?ZlwRjB\  
mg'-]>$$]  
import org.rut.util.algorithm.SortUtil; 3zWY%(8t4?  
_PNU*E%s<  
/** LdWeI  
* @author treeroot /;HytFP  
* @since 2006-2-2 3h 0w8(k;  
* @version 1.0 aH"tSgi  
*/ 0%F C;v0  
public class ImprovedMergeSort implements SortUtil.Sort { ?\$77k  
s.zH.q,  
private static final int THRESHOLD = 10; F\-qXSA  
^N Et{]x  
/* ]o,)#/' $  
* (non-Javadoc) qcQ`WU{  
* X:8=jHkz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ( }JX ]-  
*/ 22tY%Y9  
public void sort(int[] data) { 6EX:qp^`  
int[] temp=new int[data.length]; BAoqO Xv  
mergeSort(data,temp,0,data.length-1); ?H*_:?=6  
} z_JZx]*/  
s)/i_Oe$\  
private void mergeSort(int[] data, int[] temp, int l, int r) { ,Hys9I  
int i, j, k; Qg9{<0{u  
int mid = (l + r) / 2; ~Gwn||g78  
if (l == r) zKfb  
return; rQisk8 %  
if ((mid - l) >= THRESHOLD) '|Q=J)  
mergeSort(data, temp, l, mid); 0C3Yina9 *  
else 'ARQ7 Q[`  
insertSort(data, l, mid - l + 1); cO(|>&tJ  
if ((r - mid) > THRESHOLD) =N7N=xY  
mergeSort(data, temp, mid + 1, r); +#&2*nY  
else )}WG`  
insertSort(data, mid + 1, r - mid); wy) Frg  
%HYC-TF#  
for (i = l; i <= mid; i++) { I &{dan2  
temp = data; ZP%^.wxC  
} 5^* d4[&+  
for (j = 1; j <= r - mid; j++) { X/gh>MJJ<  
temp[r - j + 1] = data[j + mid]; ",Q\A I  
} !EpP-bq'*  
int a = temp[l]; Grjm9tbX}  
int b = temp[r]; d8]6<\g  
for (i = l, j = r, k = l; k <= r; k++) { 6"_FjS3Sl  
if (a < b) { o`RTvG Xk  
data[k] = temp[i++]; l[\[)X3$  
a = temp; 0dIJgKanGP  
} else { |&RdOjw$u  
data[k] = temp[j--]; ,3fw"P$  
b = temp[j]; m?<C\&)6x  
} |dX#4Mq^,  
} FpW{=4yk  
} L]HY*e  
xZ,g6s2o  
/** uE5kL{Fv  
* @param data EWqKd/  
* @param l hrcR"OZ~X  
* @param i ?c>j^}A/N  
*/ d>vGx  
private void insertSort(int[] data, int start, int len) { H,H'bd/  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); Q`19YX  
} eKStt|M'  
} 5vP*oD  
} cp.)K!$  
} <'GI<Hc  
u :m]-'  
堆排序: N@j|I* y|  
G e~&Ble  
package org.rut.util.algorithm.support; 1L &_3}  
:1.$7W t  
import org.rut.util.algorithm.SortUtil; /3+7a\|mKr  
$orhY D3gv  
/** hsfVKlw-  
* @author treeroot 1RcaE!\p  
* @since 2006-2-2 ?"sk"{  
* @version 1.0 rvr Ok  
*/ dnNc,l&g  
public class HeapSort implements SortUtil.Sort{ UTs0=:+,t  
-} Z  
/* (non-Javadoc) pOS.`rSK  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ~9'VP }\  
*/ z@iY(;Qo  
public void sort(int[] data) { B~~rLo:a  
MaxHeap h=new MaxHeap(); oPWvZI(\&  
h.init(data); .[O*bk  
for(int i=0;i h.remove(); T+2?u.{I  
System.arraycopy(h.queue,1,data,0,data.length); =AR'Pad  
} *5|\if\  
#Va@4<4r  
private static class MaxHeap{ :&TOQ<vM  
XM8C{I1  
void init(int[] data){ im1]:kr7  
this.queue=new int[data.length+1]; I{1w8m4O6  
for(int i=0;i queue[++size]=data; g~Q#U;]  
fixUp(size); pu`|HaQaE  
} 2V F|T'h  
} y f+/Kj< a  
]Fj z+CGg  
private int size=0; 9"<)DS  
o.k#|q  
private int[] queue; tk, H vE  
0Y"==g+ >f  
public int get() { pK$^@~DE  
return queue[1]; tnKzg21%  
} OwDjUKeN  
L {5zA5#m  
public void remove() { M(/%w"R  
SortUtil.swap(queue,1,size--); B>~E6j7[Mp  
fixDown(1); nTYqZlI,  
} }-8K*A3  
file://fixdown XPX{c|]>.  
private void fixDown(int k) { IlS{>6  
int j; |4-Ey! P  
while ((j = k << 1) <= size) { m0\(a_0V  
if (j < size %26amp;%26amp; queue[j] j++; qe\j$Cjy  
if (queue[k]>queue[j]) file://不用交换 Wxp^*._q3I  
break; VMtR4!:q  
SortUtil.swap(queue,j,k); k,q` ^E8k  
k = j; O gycP4z[  
} ~8|$KD4I  
} &O!d!Pf  
private void fixUp(int k) { gw5CU)r4$  
while (k > 1) { S9xC> |<  
int j = k >> 1; r{Fu|aoa;5  
if (queue[j]>queue[k]) qLPI^g,  
break; } 10Dvt>+  
SortUtil.swap(queue,j,k); wePMBL1P*  
k = j; w|$;$a7)  
} l sUQ7%f  
} oM< &4F  
~%sDQt\S  
} {~d4;ht1Y  
 T>LtN  
} Q0M8 }  
-|ee=BV  
SortUtil: guf+AVPno  
@o>2:D1G  
package org.rut.util.algorithm; $Y ]*v)}X  
qnT:x{o  
import org.rut.util.algorithm.support.BubbleSort; NP|U |zn  
import org.rut.util.algorithm.support.HeapSort; @Yt[%tOF+  
import org.rut.util.algorithm.support.ImprovedMergeSort; Lp{l& -uQ  
import org.rut.util.algorithm.support.ImprovedQuickSort; ,',fO?Qv'  
import org.rut.util.algorithm.support.InsertSort; "w|GIjE+  
import org.rut.util.algorithm.support.MergeSort; .>H7i`1D`  
import org.rut.util.algorithm.support.QuickSort; `#9ZP  
import org.rut.util.algorithm.support.SelectionSort; UkeW2l`:  
import org.rut.util.algorithm.support.ShellSort; )_f "[m%  
wdp 4-*  
/** XSZW9/I-(|  
* @author treeroot ]bX.w/=  
* @since 2006-2-2 ^ *m;![$[  
* @version 1.0 8 A2k-X,  
*/ 6i&WF<%D  
public class SortUtil { w+ _'BU1#  
public final static int INSERT = 1; )b5MP1H  
public final static int BUBBLE = 2; a0.)zgWr  
public final static int SELECTION = 3; L x(Y=  
public final static int SHELL = 4; >\VZ9bP<   
public final static int QUICK = 5; ,"*[T\u  
public final static int IMPROVED_QUICK = 6; N!btj,vx  
public final static int MERGE = 7; &;C|=8eB  
public final static int IMPROVED_MERGE = 8; WRD^S:`BH  
public final static int HEAP = 9; ;1F3.ibE  
`)SkA?yKI  
public static void sort(int[] data) { m2\ZnC  
sort(data, IMPROVED_QUICK); (+T|B E3*#  
} b%pLjvU  
private static String[] name={ EP{y?+E2  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 0R *!o\y  
}; ~/gqXT">  
q?\3m3GM  
private static Sort[] impl=new Sort[]{ ~9x$tb x-  
new InsertSort(), "9R3S[  
new BubbleSort(), = "Dmfy7  
new SelectionSort(), n {^D_S  
new ShellSort(), ;2& (]1X  
new QuickSort(), $'kIo*cZ  
new ImprovedQuickSort(), i) :Q{[D  
new MergeSort(), +}*]9nG  
new ImprovedMergeSort(), 6``!DMDt/P  
new HeapSort() YZ'gd10T  
}; NlWIb2,  
\}G/F!  
public static String toString(int algorithm){ B;_M52-B  
return name[algorithm-1]; .K:>`~<)  
} G$`/86A)  
4. R >mN[  
public static void sort(int[] data, int algorithm) { &~ uzu{  
impl[algorithm-1].sort(data); K{"(|~=U  
} wYNh0QlBH  
].` i`.T  
public static interface Sort { N "FQMxqm  
public void sort(int[] data); &K|CH? D  
} Qs</.PO  
[ tm J6^s  
public static void swap(int[] data, int i, int j) { Jfo#IRC  
int temp = data; *`mwm:4  
data = data[j]; R%54!f0 %  
data[j] = temp; 2sWM(SN  
} 7pr@aA"vgj  
} * 496"kU  
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