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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。 2b&Fu\2Dmv  
插入排序: rDv`E^\  
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package org.rut.util.algorithm.support; xB5QM #w\  
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import org.rut.util.algorithm.SortUtil; s&1}^'|  
/** v\D.j4%ij  
* @author treeroot {\gpXVrn_  
* @since 2006-2-2 gjk;An  
* @version 1.0 {43 J'WsJ  
*/ VcLzv{  
public class InsertSort implements SortUtil.Sort{ \i3)/sZ?l  
j+("4b'  
/* (non-Javadoc) ;cGY  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) >1$Vh=\OI  
*/ 'cA(-ghY/E  
public void sort(int[] data) { PQP|V>g  
int temp; V/BU(`~i  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); pj Md  
} f<M!L> +M6  
} r9n:[A&HE  
} -Eoq#ULvR  
L| ;WE=  
} otlv ;3263  
R#ZO<g%'  
冒泡排序: gv,1 CK  
u>/Jb+  
package org.rut.util.algorithm.support; +0) H~ qB\  
yz=aJ v; H  
import org.rut.util.algorithm.SortUtil; /Ow@CB  
myF/_o&Ty  
/** p# |} o9  
* @author treeroot Sl'{rol'  
* @since 2006-2-2 sY:=bU^P  
* @version 1.0 ~l]g4iEp  
*/ b8!   
public class BubbleSort implements SortUtil.Sort{ +v< \l=  
Z=oGyA  
/* (non-Javadoc) vbfQy2q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W&v|-#7=6  
*/ 5YYBX\MV  
public void sort(int[] data) { L;v.X'f  
int temp; *!ecb1U5  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ZFs xsg^r  
if(data[j] SortUtil.swap(data,j,j-1); Z9eP(ip  
} 1Cw HGO  
} xqfIm%9i}  
} ?_eHvw  
} A_crK`3  
E] rBq_S  
} gt\kTn."  
gBOF#"-  
选择排序: Hyi'z1  
odn3*{c{x  
package org.rut.util.algorithm.support; g}pD%  
%e:[[yq)G  
import org.rut.util.algorithm.SortUtil; h4Xz"i{z  
PJ\k|  
/** *,28@_EwY  
* @author treeroot \\;y W~  
* @since 2006-2-2 [_: GQ  
* @version 1.0 /0Mt-8[  
*/ yW&ka3j\  
public class SelectionSort implements SortUtil.Sort { C7K]c4T  
[S9"' ^H  
/* 3i~X`@$k>  
* (non-Javadoc) 1x8wQ/p|  
* ^bq,+1;@Q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H4$f+  
*/ NryOdt tI  
public void sort(int[] data) { #Hy\l J  
int temp; <h~=d("j  
for (int i = 0; i < data.length; i++) { :6]qr86  
int lowIndex = i; -A zOujSS  
for (int j = data.length - 1; j > i; j--) { UG[r /w5(F  
if (data[j] < data[lowIndex]) { v-wZHkdd1  
lowIndex = j; GJ F &id  
} "C?H:8W  
} e;2A{VsD8  
SortUtil.swap(data,i,lowIndex); >`p? CE  
} MGY0^6yK5  
} i!gS]?*DH  
5vJxhBm/  
} u60RuP&  
F@mxd  
Shell排序: L|B! ]}  
_!_1=|[  
package org.rut.util.algorithm.support;  tq?a3  
]LEaoOecu  
import org.rut.util.algorithm.SortUtil; J57; X=M  
?a)Fm8Y  
/** sPXjU5uq#  
* @author treeroot }9&dY!h +  
* @since 2006-2-2 Vf<q-3q  
* @version 1.0 ;e< TEs  
*/ %NM={X|'  
public class ShellSort implements SortUtil.Sort{ ci/qm\JI<<  
D$@2H>.-  
/* (non-Javadoc) 3_`)QYU'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \0vs93>?  
*/ !qU1RdZ  
public void sort(int[] data) { N9*:]a  
for(int i=data.length/2;i>2;i/=2){ uP(t+}dQ+3  
for(int j=0;j insertSort(data,j,i); \>G}DGz  
} t#3 _M=L  
} `5!AHQ/  
insertSort(data,0,1); fI1 9p Q  
} $/|vbe,  
g>k?03;  
/** w*&vH/D  
* @param data Y B,c=Wx  
* @param j kW1w;}n$  
* @param i ~Z!YB,)bp  
*/ n$v4$_qS  
private void insertSort(int[] data, int start, int inc) { noM=8C&U  
int temp; 1vxQ`)a  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); [YZgQ  
} !0vLSF=  
} b`@C#qB  
} :HwdXhA6  
EB*C;ms  
} P$Oj3HD LM  
}2iR=$2  
快速排序: E AZX  
e<*qaUI  
package org.rut.util.algorithm.support; F-oe49p5e  
?5/7 @V  
import org.rut.util.algorithm.SortUtil; iJZNSRQJ}r  
Cs y,3XG  
/** IN.g  
* @author treeroot W)J MV  
* @since 2006-2-2 ?c+$9  
* @version 1.0 *8po0s  
*/ f*xr0l  
public class QuickSort implements SortUtil.Sort{ :0QDV~bs  
^;rjs|`K#  
/* (non-Javadoc) CWocb=E  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 0{vH.b @  
*/ AI Kz]J0;  
public void sort(int[] data) { |xg_z&dX  
quickSort(data,0,data.length-1); iy_Y!wZ{  
} Pq8oK'z -  
private void quickSort(int[] data,int i,int j){ "j8)l4}  
int pivotIndex=(i+j)/2; ,B_c  
file://swap N-_APWA  
SortUtil.swap(data,pivotIndex,j); n:2._s T  
[0aC]XQZ  
int k=partition(data,i-1,j,data[j]); "|[9 Q?  
SortUtil.swap(data,k,j); P/.<sr=2  
if((k-i)>1) quickSort(data,i,k-1); 5bAdF'~  
if((j-k)>1) quickSort(data,k+1,j); &$ "J\v m  
<U1T_fiBoc  
} 1dw{:X=j  
/**  mC$y*G  
* @param data y_w  <3  
* @param i .xWaS8f  
* @param j 3T0~k--  
* @return lWtfcU?S[  
*/ Z"%.  
private int partition(int[] data, int l, int r,int pivot) { euVDrJ^  
do{ C\~}ySQc.e  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); yCav;ZS_  
SortUtil.swap(data,l,r); `lWGwFgg(  
} Dmr*Lh~  
while(l SortUtil.swap(data,l,r); y_}vVHT,  
return l; 1[8^JVC>6  
} _#NibW  
iC/*d  
} kLF`6ZXtd  
7QNx*8p  
改进后的快速排序: X:$vP'B>  
Fa[^D~$l*  
package org.rut.util.algorithm.support; )Uy%iE*  
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import org.rut.util.algorithm.SortUtil; t!*[nfR  
FHw%ynC  
/** 4\u`M R  
* @author treeroot yn_f%^!G  
* @since 2006-2-2 ,?erAI  
* @version 1.0 ?]$<Ufr  
*/ Qn.dL@W  
public class ImprovedQuickSort implements SortUtil.Sort { ZY]$MZf5yo  
_,)_(R ,h  
private static int MAX_STACK_SIZE=4096; E+qLj|IU  
private static int THRESHOLD=10; GDSXBa*7  
/* (non-Javadoc) ] xHiy+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H-+U^@w  
*/ nJ]7vj,rB  
public void sort(int[] data) { 4 ZnQpKg  
int[] stack=new int[MAX_STACK_SIZE]; |1(x2x%}D^  
6XF Ufi+  
int top=-1; UMe?nAC  
int pivot; Sx'oa$J  
int pivotIndex,l,r; 7@\.()  
"Zh,;)hS  
stack[++top]=0; xb3G,F  
stack[++top]=data.length-1; <)wLxWalF  
dGm%If9P  
while(top>0){ \}v@!PQl  
int j=stack[top--]; q i yK  
int i=stack[top--]; O>qlWPht  
$cHU,  
pivotIndex=(i+j)/2; W&)f#/M8  
pivot=data[pivotIndex]; DxNob-F r  
"Gp Tmu?  
SortUtil.swap(data,pivotIndex,j); el*|@#k}  
G=|?aK{p  
file://partition 1F,U^O  
l=i-1; Ig}hap]G  
r=j; 5=I({=/>  
do{ i/+^C($'f  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); Os'E7;:1h  
SortUtil.swap(data,l,r); //BJaWq  
} x-k-Pd  
while(l SortUtil.swap(data,l,r); h~\k;ca  
SortUtil.swap(data,l,j); Si]?4:E7=  
9 d a=q  
if((l-i)>THRESHOLD){ (WC =om  
stack[++top]=i; [mu8V+8@d4  
stack[++top]=l-1; tj~r>SRb+  
} pNOE KiJ  
if((j-l)>THRESHOLD){ 0*b8?e  
stack[++top]=l+1; :38h)9>RK  
stack[++top]=j; 5?SE?VC=t  
} b4cTn 6  
7>y]uT@ar  
} v4s4D1}  
file://new InsertSort().sort(data); v1~l=^4&  
insertSort(data); H`)eT6:|/  
} ^3$U[u%q/{  
/** a<q9~QS  
* @param data ,--#3+]XU  
*/ f}(4v1 T  
private void insertSort(int[] data) { eLPtdP5k  
int temp; IC'+{3.m8  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); p-{ 4 $W  
} d9:I.SA)E  
} dY&v(~&;]  
} H 4 ELIF#@  
jyW={%&  
} pJ}U'*Z2  
l+F29_o#  
归并排序: 3-hcKE  
>y#MEN>?  
package org.rut.util.algorithm.support; V'=;M[&  
%C,zR&]F  
import org.rut.util.algorithm.SortUtil; J{dO0!7y  
Yc]k<tQ  
/** 9 nc_$H{  
* @author treeroot .:}<4;Qz94  
* @since 2006-2-2 Yq00<kIDJ  
* @version 1.0 hzr, %r  
*/ _]o7iqtv  
public class MergeSort implements SortUtil.Sort{ iXo; e  
f|B\Y/*X  
/* (non-Javadoc) Xydx87L/-e  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /!5ohQlPJ  
*/ i*N2@Z[  
public void sort(int[] data) { Lm=EN%*#9  
int[] temp=new int[data.length]; BedL `[ ,  
mergeSort(data,temp,0,data.length-1); vw!7f|Pg ~  
} "KK}} $>  
,H"}Rw  
private void mergeSort(int[] data,int[] temp,int l,int r){ 1q!k#Cliu  
int mid=(l+r)/2; 1$03:ve1  
if(l==r) return ; J' P:SC1  
mergeSort(data,temp,l,mid); k 6[   
mergeSort(data,temp,mid+1,r); eK1l~W%  
for(int i=l;i<=r;i++){ d^RcJ3w  
temp=data; HN NeH;L  
} ? bWc<]  
int i1=l; k8}fKVU;  
int i2=mid+1; ASoBa&vX  
for(int cur=l;cur<=r;cur++){ p1niS:}j  
if(i1==mid+1) e_epuki  
data[cur]=temp[i2++]; ZrEou}z(*  
else if(i2>r) 153*b^iDBh  
data[cur]=temp[i1++]; 18%$Z$K,  
else if(temp[i1] data[cur]=temp[i1++]; seK;TQ3/7  
else 8Gy]nD  
data[cur]=temp[i2++]; @4*eH\3  
} vzI>:Bf  
} i=n;rT  
liPrxuP`  
} L@[}sMdq(  
V)~b+D  
改进后的归并排序: Z1q<) O1QX  
!%t@wQ]\hG  
package org.rut.util.algorithm.support; `;}qjm0a  
nw/g[/<;  
import org.rut.util.algorithm.SortUtil; Zc_F"KJL  
6/wC StZ  
/** oe^JDb#  
* @author treeroot n Yx[9HN  
* @since 2006-2-2 `Z>=5:+G@2  
* @version 1.0 F%y#)53g  
*/ :* |WE29U  
public class ImprovedMergeSort implements SortUtil.Sort { =3'B$PY  
Szu @{lpP@  
private static final int THRESHOLD = 10; 8v4krz<Iq  
igTs[q=Ak  
/* ^E \4`  
* (non-Javadoc) a] c03$fK  
* ,/p+#|>C=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ou4hAm91s  
*/ ,ov$` v  
public void sort(int[] data) { OjffN'a+N  
int[] temp=new int[data.length]; -:_3N2U=+  
mergeSort(data,temp,0,data.length-1); b)Nd}6}<?  
} Z:h'kgG&  
*^[6uaa  
private void mergeSort(int[] data, int[] temp, int l, int r) { a+v.(mCG  
int i, j, k; sSKD"  
int mid = (l + r) / 2; )UU`uzU;u  
if (l == r) B=W#eu <1  
return; 3'L =S  
if ((mid - l) >= THRESHOLD) :dipk,b?n  
mergeSort(data, temp, l, mid); mm#UaEp  
else |4/rVj"  
insertSort(data, l, mid - l + 1);  rwSR  
if ((r - mid) > THRESHOLD) /<T{g0s  
mergeSort(data, temp, mid + 1, r); {Q$8p2W  
else M<l<n$rYS  
insertSort(data, mid + 1, r - mid); eVMnI yr  
e`LvHU_0  
for (i = l; i <= mid; i++) { %F150$(D  
temp = data; \>oy2{=;'  
} oc-&}R4=  
for (j = 1; j <= r - mid; j++) { GJU(1%-  
temp[r - j + 1] = data[j + mid]; a6h+?Q7uF  
} `j'1V1  
int a = temp[l]; |AExaO"jk  
int b = temp[r]; k f Y;  
for (i = l, j = r, k = l; k <= r; k++) { Xajt][  
if (a < b) { |ul{d|  
data[k] = temp[i++]; % mPv1$FH  
a = temp; ,\+N}F^  
} else { Y<Ae_yLa  
data[k] = temp[j--]; mmjWLrhlu  
b = temp[j]; ?vWF[ DRd'  
} _ j'm2BA O  
} "u sPzp5  
} >f&L7@  
TEer>gD:v  
/** G,WLca[  
* @param data nZYO}bv\  
* @param l aEa.g.SZ  
* @param i s4f{ziLp  
*/ PpLh j  
private void insertSort(int[] data, int start, int len) { Y>c+j  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); <M5fk?n,|  
} w?*79 u  
} 4k{xo~+%,  
} Xep2 )3k>  
} _'y`hKeI[  
^"iL|3d  
堆排序: A[fTpS~~%  
*e:I*L  
package org.rut.util.algorithm.support; Fku<|1}&y  
7NOF^/nU  
import org.rut.util.algorithm.SortUtil; /i_FA]Go  
qM3NQ8Rm  
/** b$ 8R  
* @author treeroot W%&s$b(  
* @since 2006-2-2 EcytNYn  
* @version 1.0 I%Z=O=  
*/ !YO'u'4<aK  
public class HeapSort implements SortUtil.Sort{ CO, {/  
B )\;Ja  
/* (non-Javadoc) qTWQ!  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ur1kb{i  
*/ `{IL.9M!f  
public void sort(int[] data) { ' qT\I8%  
MaxHeap h=new MaxHeap(); 9zx9t  
h.init(data); p74Nd4U$s  
for(int i=0;i h.remove();  |#xBC+  
System.arraycopy(h.queue,1,data,0,data.length); 3H>\hZ  
} G<rAM+B*g  
Ue`Y>T7+!  
private static class MaxHeap{ vaVV 1  
g%ys|  
void init(int[] data){ ~-sG&u>  
this.queue=new int[data.length+1]; Zv mkb%8  
for(int i=0;i queue[++size]=data; ;5T}@4m|r  
fixUp(size); yP` K [/  
} QAl4w)F  
} N<KsQsy=  
`|92!Ej  
private int size=0;  )L":I  
&Wdi 5T8  
private int[] queue; !"E/6z2&(k  
9G7Brs:  
public int get() { Bz%wV-  
return queue[1]; m9 c`"!  
} \fvm6$ rZ^  
^rY18?XC+:  
public void remove() { OYmutq  
SortUtil.swap(queue,1,size--); ]70ZerQ~L  
fixDown(1); ^,f^YL;  
} ESFJN}Q%0.  
file://fixdown v/vPU  
private void fixDown(int k) { F]<2nb7  
int j; 96; gzG@1!  
while ((j = k << 1) <= size) { IQd~` G  
if (j < size %26amp;%26amp; queue[j] j++; Tgla_sMb  
if (queue[k]>queue[j]) file://不用交换 M U '-  
break; {od@S l  
SortUtil.swap(queue,j,k); QWt3KW8)  
k = j; Azr|cKu]  
} d}|z+D  
} T>hm\!  
private void fixUp(int k) { QaA?UzB  
while (k > 1) { 5xj8^W^G9  
int j = k >> 1; "So "oT1  
if (queue[j]>queue[k]) 4Xwb`?}-  
break; nHZhP4W  
SortUtil.swap(queue,j,k); E*,nKJu'r  
k = j; 6u`$a&dR'l  
} A |U0e`Iw  
} nC?Lz1re  
VT~%);.#  
} (KPD`l8.  
+`$$^x  
} ])?h ~  
w~=xO_%  
SortUtil: #IDLfQ5g  
,S`F xJcE  
package org.rut.util.algorithm; AG;KXL[V  
eZhF<<Y  
import org.rut.util.algorithm.support.BubbleSort; g"c7$  
import org.rut.util.algorithm.support.HeapSort; 2BT+[  
import org.rut.util.algorithm.support.ImprovedMergeSort; Gfy9YH~  
import org.rut.util.algorithm.support.ImprovedQuickSort; CeUXGa|C  
import org.rut.util.algorithm.support.InsertSort; :>H{?  
import org.rut.util.algorithm.support.MergeSort; ug"4P.wI  
import org.rut.util.algorithm.support.QuickSort; )7#3n(_np  
import org.rut.util.algorithm.support.SelectionSort; qM2m!  
import org.rut.util.algorithm.support.ShellSort; PJ<qqA`!  
}1CvbB%,A  
/** )1GJ^h$l  
* @author treeroot |(,{&\  
* @since 2006-2-2  =Uo*-EH  
* @version 1.0 utn,`v   
*/ 3rJ LLYR  
public class SortUtil { MJH>rsTQ  
public final static int INSERT = 1; ^Q+z^zlC  
public final static int BUBBLE = 2; |942#rM  
public final static int SELECTION = 3; 6g#E/{kQw  
public final static int SHELL = 4; zF? 6"  
public final static int QUICK = 5; ~RBa&Y=Mb  
public final static int IMPROVED_QUICK = 6; ]ab q$Y'  
public final static int MERGE = 7; W+4Bx=Mj  
public final static int IMPROVED_MERGE = 8; (Gapv9R  
public final static int HEAP = 9; VpY,@qh  
J*6B~)Sp@  
public static void sort(int[] data) { XgeUS;qtta  
sort(data, IMPROVED_QUICK); 7xWJw  
} `fG<iBD  
private static String[] name={ :2wT)wz  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" *1:kIi7_  
}; 7;r3Bxa Q  
8$IUit h  
private static Sort[] impl=new Sort[]{ Y~#F\v  
new InsertSort(), >f1fvv6  
new BubbleSort(), `JGW8 _  
new SelectionSort(), %t74*cX  
new ShellSort(), M[-/&;`f@  
new QuickSort(), bB*cd!7y  
new ImprovedQuickSort(), uG YH4  
new MergeSort(), OI6m>XH?  
new ImprovedMergeSort(), Y$./!lVY  
new HeapSort() ^\\9B-MvY  
}; =`C K`x  
#i.BOQxS  
public static String toString(int algorithm){ gt~u/Z%  
return name[algorithm-1]; pQ4HX)<P  
} ~[BGKq h  
WZTv  
public static void sort(int[] data, int algorithm) { '[_.mx|cd`  
impl[algorithm-1].sort(data); FBzsM7]j  
} `@u9 fx.  
n%02,pC6,  
public static interface Sort { N1x~-2(  
public void sort(int[] data); zh(=kS `  
} I9#l2<DYlX  
t47;X}y f  
public static void swap(int[] data, int i, int j) { \DD4=XGA  
int temp = data; :gRVa=}=  
data = data[j]; BmYX8j]  
data[j] = temp; }%42Ty  
} *#?9@0b@  
} qn}VW0!  
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