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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。 ?1+JBl~/d  
插入排序: @|N'V"*MT  
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package org.rut.util.algorithm.support; \]@XY_21  
UUE:>[,  
import org.rut.util.algorithm.SortUtil; c^4^z"Mo`  
/** ,wyfMOGLt  
* @author treeroot X {["4  
* @since 2006-2-2 (wMiX i  
* @version 1.0 t[L_n m5-  
*/ *5kQ6#l  
public class InsertSort implements SortUtil.Sort{ `cz%(Ry,  
e58   
/* (non-Javadoc) >u6*P{;\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) R a> k#pQ  
*/ :^G;`T`L  
public void sort(int[] data) { \R m2c8Z2  
int temp; x]1G u  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); K`BNSdEN>  
} #_A <C+[  
} $r>\y (W  
} lphELPh  
u$3wdZ2&m  
} 6m=FWw3y  
6:(R/9!P  
冒泡排序: \[nvdvJv  
NXJyRAJ*%  
package org.rut.util.algorithm.support; G>3]A5  
p1-bq:  
import org.rut.util.algorithm.SortUtil;  AU3Ou5  
$& 0hpg  
/** c@+;4Iz  
* @author treeroot igoUKDNiQ-  
* @since 2006-2-2 0<,Q7onDD:  
* @version 1.0 +IRr&J*P  
*/ pPC_ub  
public class BubbleSort implements SortUtil.Sort{ 4 ^=qc99  
|GDf<\  
/* (non-Javadoc) [(hB%x_"  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Oq7R^t`b  
*/ oj8_e xx  
public void sort(int[] data) { Sxj _gn  
int temp; 86]})H  
for(int i=0;i for(int j=data.length-1;j>i;j--){ #P)7b,3pe  
if(data[j] SortUtil.swap(data,j,j-1); gwf *M3(  
} 1X5*V!u  
} l> Mth+ ,b  
} (Wj2%*NT  
} kLr6j-X  
R5y+bMZ  
} v(ATbY75  
GN7\p)  
选择排序: FMuakCic5  
^/)!)=?  
package org.rut.util.algorithm.support; l7.W2mg  
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import org.rut.util.algorithm.SortUtil; &TpzJcd"  
A3\%t@y  
/** fP6]z y^ *  
* @author treeroot &oA p[]  
* @since 2006-2-2 ,>DaS(  
* @version 1.0 ;}=4z^^5  
*/ qtx5N)J6  
public class SelectionSort implements SortUtil.Sort { C< :F<[H  
U%Igj:%?;`  
/* k:+Bex$g  
* (non-Javadoc) q,<AW>  
* uv:DO6 {  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3\=iB&Gf|  
*/ $'9b,- e  
public void sort(int[] data) { +npcU:(Kg  
int temp; _li\b-  
for (int i = 0; i < data.length; i++) { %(EUZu2  
int lowIndex = i; i$Rlb5RU  
for (int j = data.length - 1; j > i; j--) { SO}$96  
if (data[j] < data[lowIndex]) { ;w^-3 U7:  
lowIndex = j; @IB+@RmL  
} q}nL'KQ,n  
} p6VHa$[  
SortUtil.swap(data,i,lowIndex); !PaDq+fB  
} Is87 9_Z  
} ";)SA,Z  
D^ E+#a 1  
} ""j(wUp-W  
>=|;2*9v  
Shell排序: ?z:Xdx\l  
jslfq@5v  
package org.rut.util.algorithm.support; -nC 5  
OT & mNE4  
import org.rut.util.algorithm.SortUtil; X(b"b:j'  
E !a5-SrR  
/** "S">#.L  
* @author treeroot J!%cHqR  
* @since 2006-2-2 HuX{8nl a  
* @version 1.0 q{rc[ s?  
*/ $] js0 )>  
public class ShellSort implements SortUtil.Sort{ \X'{ ee  
 IX|2yu4  
/* (non-Javadoc) ?\HXYCi0r  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) gFsnL*L0  
*/  2Z ? N  
public void sort(int[] data) { _ ]W }6?i  
for(int i=data.length/2;i>2;i/=2){ nUAs:Q  
for(int j=0;j insertSort(data,j,i); \XG18V&  
} %H-(-v^T*  
} #-QQ_  
insertSort(data,0,1); bS0z\!1  
} l_G&#sQ0  
Wcgy:4K3  
/** ([-xM%BI6  
* @param data QE:%uT  
* @param j ` "Gd/  
* @param i V9v80e {n4  
*/ t^|+|>S  
private void insertSort(int[] data, int start, int inc) { ]-6=+\]   
int temp; qR W WG&  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); lgxG:zAC  
} S?Y,sl+A:  
} ~%6GF57gC  
} OVsZUmSG  
39W"G7n?v  
} iU5Aj:U3  
9s5PJj"u  
快速排序: [qHLo>HaL  
H8>u:  
package org.rut.util.algorithm.support; EDm,Y  
kEM5eY  
import org.rut.util.algorithm.SortUtil; ,j4 ;:F  
-Oo7]8  
/** G/F0 )M  
* @author treeroot }&Eb {'  
* @since 2006-2-2 ))M; .b.D  
* @version 1.0 Pkr0| bs*  
*/ 1|za>N6[yu  
public class QuickSort implements SortUtil.Sort{ _T\~AwVc<  
I2@pkVv3z  
/* (non-Javadoc) o{EWNkmj  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) M PMa  
*/ 4{d`-reHg  
public void sort(int[] data) { QyJ2P{z  
quickSort(data,0,data.length-1); (6C%w)8'  
} FFTh}>>  
private void quickSort(int[] data,int i,int j){ k+^-;=u 6<  
int pivotIndex=(i+j)/2; t3TnqA  
file://swap a0Y/,S*K  
SortUtil.swap(data,pivotIndex,j); ! H)D@,@&  
!6t ()]  
int k=partition(data,i-1,j,data[j]); /f!CX|U  
SortUtil.swap(data,k,j); @"*8nV#  
if((k-i)>1) quickSort(data,i,k-1); x(e =@/qp  
if((j-k)>1) quickSort(data,k+1,j); D`;Q?f C  
B!vI^W  
} c}nXMA^^  
/** L0_qHLY  
* @param data OUY 65K  
* @param i ( }DCy23  
* @param j :*wnO;eN  
* @return jk0Ja@8PK  
*/ C0\A  
private int partition(int[] data, int l, int r,int pivot) { AiXxn'&i  
do{ zwAkXj  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); _kR,R"lh  
SortUtil.swap(data,l,r); 7o$4ov;T  
} l$%mZl  
while(l SortUtil.swap(data,l,r); GS^U6Xef  
return l; q%u;+/|l  
} |w(@a:2 kw  
LbGyD;#_  
} @u./VK  
UR~9*`Z ,  
改进后的快速排序: YuWsE4$  
C7ZU)MEUd/  
package org.rut.util.algorithm.support; Z5/g\G[  
o0:[,ock  
import org.rut.util.algorithm.SortUtil; &H!#jh\w  
\JBJ$lBL  
/** h9)QQPP  
* @author treeroot dm60O8  
* @since 2006-2-2 U?u0|Y+  
* @version 1.0 Te`Z Qqb  
*/ rC>')`uk  
public class ImprovedQuickSort implements SortUtil.Sort { zWxKp;.  
XgUvgJ  
private static int MAX_STACK_SIZE=4096; s)q;{wz  
private static int THRESHOLD=10; W&[}-E8<Y  
/* (non-Javadoc) {`0GAW)q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Ly?yW S-x  
*/ /? n 9c;w  
public void sort(int[] data) { @0`Q  
int[] stack=new int[MAX_STACK_SIZE]; lZTD>$  
2M>Y3Q2Yv  
int top=-1; 5b_[f(  
int pivot; RVmD&  
int pivotIndex,l,r; v*Qr(4  
i[b?W$]7  
stack[++top]=0; pIh%5Z U  
stack[++top]=data.length-1; uy~KJn?Tu  
[@@Ovv  
while(top>0){ *yGOm i  
int j=stack[top--]; >r7{e:~q  
int i=stack[top--]; n237%LH[  
CErkmod{}e  
pivotIndex=(i+j)/2; f!}c0nb  
pivot=data[pivotIndex]; :%Dw3IrOM  
h(hb?f@1:  
SortUtil.swap(data,pivotIndex,j); `;L0ax  
W?m?r.K?  
file://partition DXAA[hUjF  
l=i-1; :U`8s#  
r=j; 6g@@V=mf  
do{ dA<PQKm  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); oLcOp.8h[  
SortUtil.swap(data,l,r); L 6){wQ%c  
} /i+8b(x  
while(l SortUtil.swap(data,l,r); "1rZwFI0l  
SortUtil.swap(data,l,j); JHN3 5a+  
Pm]6E[zC  
if((l-i)>THRESHOLD){ ^'DrU< o  
stack[++top]=i; 24 S,w>j  
stack[++top]=l-1; t@-:e^ v  
} v~:$]a8  
if((j-l)>THRESHOLD){ 3\6 UH  
stack[++top]=l+1; T!o 4k  
stack[++top]=j; #2c-@),  
} 5-|fp(Ww_W  
Qci<cVgP  
} FJ3Xeo s4|  
file://new InsertSort().sort(data); $l:?(&u  
insertSort(data); |y@TI  
} I(E1ym  
/** 2 @g'3M  
* @param data C !81Km5  
*/ SGMLs'D   
private void insertSort(int[] data) { jcF/5u5e  
int temp; w U.K+4-k  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 4NxtU/5-sU  
} @p jah(i`  
} 5H#3PZaQ  
} ~SkdP7 )  
Y418k  
} eRllF` *  
EAq/Yw2$  
归并排序: LV{a^!f`y  
?\:ysTVu  
package org.rut.util.algorithm.support; F9]j{'#  
Y7)YJI  
import org.rut.util.algorithm.SortUtil; k3se<NL[  
Zs!)w9y&V  
/** WF<0QH  
* @author treeroot ^ MkT">  
* @since 2006-2-2 6.|f iQs ]  
* @version 1.0 2E/#fX9!4  
*/ $~4ZuV%  
public class MergeSort implements SortUtil.Sort{ Nko;I?Fn  
8}m] XO  
/* (non-Javadoc) GE=#8-@g~p  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ^I9x@t  
*/ Ftj3`Mu  
public void sort(int[] data) { '3eP<earRP  
int[] temp=new int[data.length]; MId\ dFu  
mergeSort(data,temp,0,data.length-1); dI&2dcumS  
}  5I5~GH  
]SpUD  
private void mergeSort(int[] data,int[] temp,int l,int r){ kEWC  
int mid=(l+r)/2; ymybj  
if(l==r) return ; e-f_ #!bW  
mergeSort(data,temp,l,mid); Gk2\B]{  
mergeSort(data,temp,mid+1,r); 0Ph,E   
for(int i=l;i<=r;i++){ 4O[T:9mn0  
temp=data; &O(z|-&| x  
} '.oEyZA;o  
int i1=l; uY5&93R  
int i2=mid+1; FLY#   
for(int cur=l;cur<=r;cur++){ [Fe`}F}Co8  
if(i1==mid+1) waXA%u50  
data[cur]=temp[i2++]; _ I+#K M  
else if(i2>r) +r9:n(VP  
data[cur]=temp[i1++]; p_ =^E*J]  
else if(temp[i1] data[cur]=temp[i1++]; ptGM'  
else |/zE(ePc{  
data[cur]=temp[i2++]; Q~]#x![u0  
} mY2 Ubn*  
} XbYW,a@w2  
gPY2Bnw;l  
} D52ELr7  
swuW6p  
改进后的归并排序: ro7\}O:I  
oUR'gc :  
package org.rut.util.algorithm.support; (Ac ' }O  
Z2`(UbG}  
import org.rut.util.algorithm.SortUtil; o <8L, u(U  
$zq`hI!1  
/** 9)s=%dL  
* @author treeroot MsCY5g  
* @since 2006-2-2 R1/ )Yy  
* @version 1.0 -gH1`*YL  
*/ %1a\"F![  
public class ImprovedMergeSort implements SortUtil.Sort { hf>JW[>Xo  
U$6N-q  
private static final int THRESHOLD = 10; w<N [K>  
mZJ"e,AY  
/* hT9fqH  
* (non-Javadoc) fLAOA9  
* c3]ZU^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) D_D<N(O  
*/ X'e@(I!0  
public void sort(int[] data) { 1Ah  
int[] temp=new int[data.length]; )#Ea~>v  
mergeSort(data,temp,0,data.length-1); G$:T!  
} ` :Am#"j]}  
Z ) qc-~S  
private void mergeSort(int[] data, int[] temp, int l, int r) { eiI}:5~ /g  
int i, j, k; #A@*k}/+  
int mid = (l + r) / 2; "n:z("Q*  
if (l == r) >}GtmnF  
return; vL{sk|2&  
if ((mid - l) >= THRESHOLD) X*1vIs;[@  
mergeSort(data, temp, l, mid); G%-[vk#]  
else > y"V%  
insertSort(data, l, mid - l + 1); BftW<1,U^  
if ((r - mid) > THRESHOLD) 0Jz'9  
mergeSort(data, temp, mid + 1, r); ` *x;&.&v  
else `Q^G k{9P  
insertSort(data, mid + 1, r - mid); >%x7-->IB  
] 7_ f'M1F  
for (i = l; i <= mid; i++) { "zJ1vIZY  
temp = data; _/MHi-]/.  
} 8-UlbO6  
for (j = 1; j <= r - mid; j++) { ZJ'#XZpr  
temp[r - j + 1] = data[j + mid]; Eic/#j{4  
} ko*Ir@SDv  
int a = temp[l]; U-#wFc2N  
int b = temp[r]; I0.{OJ-  
for (i = l, j = r, k = l; k <= r; k++) { SaMg)s~B  
if (a < b) { Ly/"da  
data[k] = temp[i++]; nJY#d;  
a = temp; 7"w r8  
} else { F]@vmzr  
data[k] = temp[j--]; :w:hqe|_  
b = temp[j]; W'eF | hu  
} %fnL  
} 6%~ Z^>`N  
} q3TAWNzI0  
3qE2mYK  
/** s6%%/|  
* @param data l_5]~N  
* @param l *=mtt^yZ  
* @param i 8- 3]Bm!  
*/ 9^QiFgJy  
private void insertSort(int[] data, int start, int len) { iyAeR!`  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); 9'faH  
} @v\Osp t=  
} `WGT`A"  
} x hBlv  
} ,<0R'R  
XT> u/Z)  
堆排序: !E8y!|7$  
v\PqhIy"  
package org.rut.util.algorithm.support; A}?n.MAX>  
zs:O HEZw  
import org.rut.util.algorithm.SortUtil; :{bvCos<)  
#mLF6 "A  
/** u6Fm qK]Dj  
* @author treeroot W0J d2*]  
* @since 2006-2-2 XdjM/hB{fD  
* @version 1.0 Md mS  
*/ {.qeVE{  
public class HeapSort implements SortUtil.Sort{ 5P-7"g ca  
<]xGd!x$  
/* (non-Javadoc) _>+!&_h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q@8Jc[\d  
*/ N]udZhkn  
public void sort(int[] data) { AE? 0UVI  
MaxHeap h=new MaxHeap(); N}Q%y(O^  
h.init(data); 0Am&:kX't  
for(int i=0;i h.remove(); uP2e/a  
System.arraycopy(h.queue,1,data,0,data.length); dU<\ FW_  
} jcD_<WSe  
~x^E kE  
private static class MaxHeap{ N^z4I,GV(  
kN_ i0~y@-  
void init(int[] data){ 8Yc'4v#}  
this.queue=new int[data.length+1]; 1Kszpt(Ld  
for(int i=0;i queue[++size]=data; d"o5uo  
fixUp(size); q{~59{Fha  
} kKL'rT6z  
} yIy'"BCxM  
^=`7]E[p  
private int size=0; 1=:=zyEEo  
l{<+V)  
private int[] queue; 7.mY@  
CAg~K[  
public int get() { k8IhQ{@  
return queue[1]; sh;DCd  
} Tq{+9+  
dZ}gf}.v  
public void remove() { `Cq&;-u  
SortUtil.swap(queue,1,size--); 9'+Eu)l:  
fixDown(1); "g27|e?y  
} zGgPW  
file://fixdown -!i1xR (;h  
private void fixDown(int k) { HR'sMu3  
int j; P t< JF  
while ((j = k << 1) <= size) { PJ}d-   
if (j < size %26amp;%26amp; queue[j] j++; 8 p D$/  
if (queue[k]>queue[j]) file://不用交换 `t[b0; 'OH  
break; 0x BO5[w,Y  
SortUtil.swap(queue,j,k); -#@l`kt  
k = j; Z 0&=Lw  
} hK^(Y  
} z5.Uv/n\1  
private void fixUp(int k) { v2eLH:6  
while (k > 1) { ov;1=M~RF  
int j = k >> 1; mD@*vq  
if (queue[j]>queue[k]) r{\c. \  
break; R(p`H}^  
SortUtil.swap(queue,j,k); I<E~=  
k = j; ;IyA"C(i  
} En!X}Owh  
} }@6Tcn1  
D!7-(3R  
} 6[+@#IWx  
@7S* ]  
} qFQO1"mu  
bmCp:6  
SortUtil: m8[XA!,  
xf2|9Tqt  
package org.rut.util.algorithm; FgwIOpqE*  
$[f-{B{>*  
import org.rut.util.algorithm.support.BubbleSort; 7slpj8  
import org.rut.util.algorithm.support.HeapSort; 7pPaHX8  
import org.rut.util.algorithm.support.ImprovedMergeSort; h;TN$ /  
import org.rut.util.algorithm.support.ImprovedQuickSort; ,bTpD!  
import org.rut.util.algorithm.support.InsertSort; lo!^h]iE!  
import org.rut.util.algorithm.support.MergeSort; +G: CR,Z>+  
import org.rut.util.algorithm.support.QuickSort; 6_mkt|E=  
import org.rut.util.algorithm.support.SelectionSort; i?{)o]i  
import org.rut.util.algorithm.support.ShellSort; KXrZ:4bg  
w?#s)z4}g  
/** Cb}I-GtO  
* @author treeroot ehTrjb3k  
* @since 2006-2-2 KC+jHk  
* @version 1.0 ' % d-  
*/ ~fnu;'fN  
public class SortUtil { N 2XL5<  
public final static int INSERT = 1; 4og/y0n,l"  
public final static int BUBBLE = 2; <n1panS  
public final static int SELECTION = 3; `\-<tk9  
public final static int SHELL = 4; 7l(GBr  
public final static int QUICK = 5; jw5ldC>U  
public final static int IMPROVED_QUICK = 6; ^sVr#T  
public final static int MERGE = 7; 52,[dP,g  
public final static int IMPROVED_MERGE = 8; Am ~P$dN  
public final static int HEAP = 9; B,S~Idr}  
bZ 0{wpeK=  
public static void sort(int[] data) { C))x#P36  
sort(data, IMPROVED_QUICK); ;_X2E~i[  
} sHqa(ynK  
private static String[] name={ !jWE^@P/B  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" h0.2^vM)R  
}; }3O 0nab  
qdnwaJ;&  
private static Sort[] impl=new Sort[]{ &J?:wC=E  
new InsertSort(), rP{Jep!  
new BubbleSort(), P,J+'.@  
new SelectionSort(), Y_zMj`HE  
new ShellSort(), xovsh\s  
new QuickSort(), MxgJ+  
new ImprovedQuickSort(), H\fsyxM7  
new MergeSort(), +'|nsIx,  
new ImprovedMergeSort(), Sx8RH),k  
new HeapSort() i 558&:  
}; =u-q#<h4 ;  
%?hvN  
public static String toString(int algorithm){ y{KYR)   
return name[algorithm-1]; q6PG=9d0B  
} d{J@A;d a  
?}e^-//*i  
public static void sort(int[] data, int algorithm) { Kn=0AdM  
impl[algorithm-1].sort(data); w,i?e\5  
} =&i#NSK  
ri Z :#I  
public static interface Sort { N7u|< 0[  
public void sort(int[] data); b4qMTRnv  
} YP Qix  
a]/KJn /B(  
public static void swap(int[] data, int i, int j) { 1}_4C0h\'  
int temp = data; W) Ct*I^  
data = data[j]; UgL FU#  
data[j] = temp; A.vf)hO  
}  PI.Zd1r  
} M5a&eO  
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