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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。 l_%~X 9"  
插入排序: F~AS(sk  
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package org.rut.util.algorithm.support; rZv+K/6*M  
{Jc!T:vJ  
import org.rut.util.algorithm.SortUtil; _XZ=4s  
/** #77UKYj2L-  
* @author treeroot o;mIu#u  
* @since 2006-2-2 u^9c`  
* @version 1.0 Uz|]}t5V  
*/ qrc/Q;$  
public class InsertSort implements SortUtil.Sort{ ~'MWtDe:Z8  
q@9 i3*q;  
/* (non-Javadoc) N 3c*S"1  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 8tMte!E  
*/ -#6*T,f0P(  
public void sort(int[] data) { -/%jeDKp  
int temp; m-RY{DO+  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); gpWS_Dw9  
} hhGpB$A  
} ]Qr8wa>Z  
} @U{M"1zZe  
JZzf,G:  
} 0)5Sx /5'  
U_'q-*W  
冒泡排序: }!V<"d,!  
o(/ ia3  
package org.rut.util.algorithm.support; 3SDWR@x&  
5R`6zhf  
import org.rut.util.algorithm.SortUtil; *hs<Ez.cC  
vXyo  
/** "n }fEVJ,  
* @author treeroot 0t?<6-3`/  
* @since 2006-2-2 \)ZX4rs{8  
* @version 1.0 .oj"ru  
*/ y=xe<#L  
public class BubbleSort implements SortUtil.Sort{ ;}~Bv<#  
b^DV9mO4J  
/* (non-Javadoc) h<ctW>6v  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) G!Oq>7  
*/ P=[x!}.I  
public void sort(int[] data) { {mnSTL`  
int temp; */dh_P<Yj  
for(int i=0;i for(int j=data.length-1;j>i;j--){ n UCk0:{  
if(data[j] SortUtil.swap(data,j,j-1); irb.F>(x  
} h$ iyclX  
} 8sF0]J[g{  
} `Mn{bd  
} C%?D E@k  
W#7-%o T  
} {R!TUQ5  
`[` *@O(y  
选择排序: 40d9/$uzh  
IA 9v1:>  
package org.rut.util.algorithm.support; 7K]U |K#  
r]EZ)qp^@  
import org.rut.util.algorithm.SortUtil; T{{AZV"pB  
oy2dA  
/** ~K#_'Ldrd  
* @author treeroot YSz$` 7i  
* @since 2006-2-2 p9}c6{Wp  
* @version 1.0 2td|8vDA  
*/ >`?+FDOJ,  
public class SelectionSort implements SortUtil.Sort { h:Mn$VR,  
5A]LNA4i  
/* UNcJ=   
* (non-Javadoc) u3i| }`  
* '"fU2M<.  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) q{Ta?|x#  
*/ bb0McEQy  
public void sort(int[] data) { 3G/ mB  
int temp; >;&V~q:di  
for (int i = 0; i < data.length; i++) { @1SKgbt>  
int lowIndex = i; IJBJebqL  
for (int j = data.length - 1; j > i; j--) { a(43]d&  
if (data[j] < data[lowIndex]) { pT;-1c%:  
lowIndex = j; xBE RCO^  
} ZJI1NCBZ  
} >7(~'#x8A"  
SortUtil.swap(data,i,lowIndex); >[%.h(h/%  
} ;$tv8%_L[  
} u388Wj   
xX&>5 "  
} J,0WQQnb  
oB{}-[G  
Shell排序: kSDa\l!W]  
p`<e~[]a  
package org.rut.util.algorithm.support; z Jo#3  
?m9UhLeaS=  
import org.rut.util.algorithm.SortUtil; J.e8UQ@=5  
9p\wTzA  
/** Ubw!/|mi  
* @author treeroot X v7U<q  
* @since 2006-2-2 F<oc Y0=9p  
* @version 1.0 cxP9n8CuT  
*/ w1"gl0ga$  
public class ShellSort implements SortUtil.Sort{  IB.'4B7  
RqN_vk\  
/* (non-Javadoc) y5AXL5  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]dGr1 ncu  
*/ rMXOwkE  
public void sort(int[] data) { )(?UA$"  
for(int i=data.length/2;i>2;i/=2){ eA*Jfb  
for(int j=0;j insertSort(data,j,i); pT ocqJ22  
} L%o65  
} RLu$$Eb  
insertSort(data,0,1); 1hMX(N&|  
} )S wG+k,  
=ve*g&  
/** &8X .!r`f  
* @param data 4*D fI  
* @param j [N+ m5{tT  
* @param i S-M)MCL  
*/ 1|l)gfcP  
private void insertSort(int[] data, int start, int inc) { ?2?S[\@`0U  
int temp; !sfXq"F  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); O:5Rp_?^  
} [w&#+h-q  
} RVgPH<1X@e  
} f.aB?\"f6  
J8u{K.( *7  
} F}6DB*  
c%AFo]H  
快速排序: ;0w^ud  
E(QZ!'%K+m  
package org.rut.util.algorithm.support; M('s|>\l  
ZR;8r Z](  
import org.rut.util.algorithm.SortUtil; QQg8+{>  
%]a @A8o0  
/** bH\'uaJ  
* @author treeroot 9 3W  
* @since 2006-2-2 fB f 4]^  
* @version 1.0 ]>R`;"(  
*/ r/NSD$-n  
public class QuickSort implements SortUtil.Sort{ j4~7akG  
d5@X#3Hd  
/* (non-Javadoc) (O)\#%,@R  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) w/b>awI  
*/ \H Wcd|  
public void sort(int[] data) { 0>,.c2),  
quickSort(data,0,data.length-1); YSR mt/  
} hp bwZ  
private void quickSort(int[] data,int i,int j){ q"gqO%Wb|  
int pivotIndex=(i+j)/2; v! 7s M  
file://swap _j:UGMTi(U  
SortUtil.swap(data,pivotIndex,j); g M4Pj[W  
C`\9c ej  
int k=partition(data,i-1,j,data[j]); 8YuJ8KC  
SortUtil.swap(data,k,j); z$JX'(<Z7  
if((k-i)>1) quickSort(data,i,k-1); Y/. AUN Z  
if((j-k)>1) quickSort(data,k+1,j); {Ge+O<mD  
aWyUu/g<A`  
} 96(R'^kNX  
/** j|:dYt`WM  
* @param data e]lJqC  
* @param i "j{i,&Y$_  
* @param j #SKfE  
* @return ^_v[QV  
*/ 6cM<>&e  
private int partition(int[] data, int l, int r,int pivot) { \+-zRR0  
do{ Zp?4uQ)[W  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); HF"Eys  
SortUtil.swap(data,l,r); 4&Byl85q  
} a:85L!~:l  
while(l SortUtil.swap(data,l,r); 'It?wB W  
return l; {P-xCmZ~Wt  
} geksjVwPH  
3KSpB;HX  
} -<_QF82  
o]Gguw5W{  
改进后的快速排序: >R!"P[*  
&VDl/qnaL  
package org.rut.util.algorithm.support; bmu6@jT  
4'',6KJ@  
import org.rut.util.algorithm.SortUtil; -."kq.m*  
?WQNIX4  
/** Ly;I,)w  
* @author treeroot ?v:ZU~i  
* @since 2006-2-2 SxJ$b  
* @version 1.0 YTK^ijmU6x  
*/ .}q]`<]ze  
public class ImprovedQuickSort implements SortUtil.Sort { ?~J i-{#X  
\<~}o I  
private static int MAX_STACK_SIZE=4096; B{C_hy-fw  
private static int THRESHOLD=10; Us,)]W.S  
/* (non-Javadoc) 8V9 [a*9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ks*Y9D*=  
*/ <:&de8bT  
public void sort(int[] data) { yEq#Dr  
int[] stack=new int[MAX_STACK_SIZE]; B:< ]Hl$  
Ytao"R/  
int top=-1; Bq@zaMv  
int pivot; b O=yi)  
int pivotIndex,l,r; UZGDdP  
qi(*ty  
stack[++top]=0; %d1draL  
stack[++top]=data.length-1; .Pe9_ZH$W  
/)EY2Y'  
while(top>0){ n2 {SV  
int j=stack[top--]; UL( lf}M  
int i=stack[top--]; =>|C~@C?  
& ze>X  
pivotIndex=(i+j)/2; .m;G$X|3U  
pivot=data[pivotIndex]; .$&Q[r3Lu  
(u hd "  
SortUtil.swap(data,pivotIndex,j); H6K`\8/SeN  
c0_E_~  
file://partition O/Rhf[7v*  
l=i-1; ";x+1R.d  
r=j; G_ >G'2  
do{ e)H!uR  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); "B{ECM;  
SortUtil.swap(data,l,r); \, &9  
} x[(?#  
while(l SortUtil.swap(data,l,r); D\1k.tI  
SortUtil.swap(data,l,j); + H_WlYg-  
@F~LW6K  
if((l-i)>THRESHOLD){ /KCPpERk{  
stack[++top]=i; `_vB+a  
stack[++top]=l-1; P[ r];e  
} ?F7o!B  
if((j-l)>THRESHOLD){ 445o DkG  
stack[++top]=l+1; 'zZcn" +!  
stack[++top]=j; I.'b'-^  
} G8Z4J7^  
&fOdlQ?  
} )IL #>2n?  
file://new InsertSort().sort(data); l [GOs&D1  
insertSort(data); e>}}:Ud  
} a4 MZ;5  
/** Ge+0-I6Ju  
* @param data IA&L]  
*/ BvD5SBa}"  
private void insertSort(int[] data) { _>m-AI4^  
int temp; &HW1mNF9  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); ccFn.($p?,  
} \x{;U#B[3>  
} d XHB#  
} S8d8%R~1=h  
pd[ncL  
} ;`YkMS`=W  
;%C'FV e]  
归并排序: Q/ms]Du  
=sJ _yq0#R  
package org.rut.util.algorithm.support; wC_l@7 t  
DQ#H,\ ^<  
import org.rut.util.algorithm.SortUtil; wXMDh$  
 p?D2)(  
/** B/JO~;{  
* @author treeroot JA)?p{j  
* @since 2006-2-2 2& PPz}Sw  
* @version 1.0 !" #9<~Q,p  
*/ rl#vE's6.e  
public class MergeSort implements SortUtil.Sort{ "\W-f  
2&'|Eqk  
/* (non-Javadoc) ^N}Wnk7ks'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) =]`lN-rYw  
*/ J_;N:7'p  
public void sort(int[] data) { @`opDu!  
int[] temp=new int[data.length]; C?ib_K*  
mergeSort(data,temp,0,data.length-1); !Z!g:II /  
} Rlnbdb;!k  
PNF?;*`-{7  
private void mergeSort(int[] data,int[] temp,int l,int r){ \!vN   
int mid=(l+r)/2; Zv11uH-C  
if(l==r) return ; ml0.$z  
mergeSort(data,temp,l,mid); u] :m"L M  
mergeSort(data,temp,mid+1,r); >d"3<S ; b  
for(int i=l;i<=r;i++){ @E( 7V(m/  
temp=data; vb 1@yQ  
} 1g# #sSa6  
int i1=l; ;*ix~taL%  
int i2=mid+1; DFhXx6]  
for(int cur=l;cur<=r;cur++){ )VL96did  
if(i1==mid+1) =S'%`]f?  
data[cur]=temp[i2++]; <IW#ME  
else if(i2>r) Spo?i.#  
data[cur]=temp[i1++]; 2%*MW"Q  
else if(temp[i1] data[cur]=temp[i1++]; 2!&&|Mh}  
else b" xmqWa  
data[cur]=temp[i2++]; v_e9}yI   
} J PyOG _h  
} J q{7R  
-jgysBw+Xb  
} lis/`B\x  
qq)0yyL r  
改进后的归并排序: SN4Q))dAU  
PH"hn]  
package org.rut.util.algorithm.support; *Av"JAX  
m9U"[Huv1E  
import org.rut.util.algorithm.SortUtil; @ '@:sM_  
{G <kA(Lm  
/** 6v,z@!b  
* @author treeroot dz~co Z9  
* @since 2006-2-2 WI]o cF  
* @version 1.0 >!_Xgw  
*/  h:lt<y  
public class ImprovedMergeSort implements SortUtil.Sort { tXJU vish  
eh,~^x5  
private static final int THRESHOLD = 10; omWJJ|b~  
eEhr140  
/* yj4+5`|f  
* (non-Javadoc) LZMYr  
* Kwc6mlw~M  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 4f(Kt,0  
*/ 2pdvWWh3l  
public void sort(int[] data) { Sq:0w  
int[] temp=new int[data.length]; E}%hz*Q)(  
mergeSort(data,temp,0,data.length-1); -v6M<  
} JCAq8=zM  
AoA!q>  
private void mergeSort(int[] data, int[] temp, int l, int r) { 7d92 Pe  
int i, j, k; ;n|^1S<[  
int mid = (l + r) / 2; .9O$G2'oh  
if (l == r) bc , p }  
return; zhY+x<-  
if ((mid - l) >= THRESHOLD) G,;,D9jO7  
mergeSort(data, temp, l, mid); r\nx=  
else VLBE'3Qg 1  
insertSort(data, l, mid - l + 1); 1s1=rZ!  
if ((r - mid) > THRESHOLD) @ P|LLG'  
mergeSort(data, temp, mid + 1, r); RpLE 02U  
else e8'wG{3A  
insertSort(data, mid + 1, r - mid); 64:fs?H  
?f/n0U4w  
for (i = l; i <= mid; i++) { HHqwq.zIy  
temp = data; &@ JvnO:  
} Vf(6!iRP@  
for (j = 1; j <= r - mid; j++) { };'\~g,1  
temp[r - j + 1] = data[j + mid]; YJ(*wByM  
} 9W5onn  
int a = temp[l]; 'l,V*5L  
int b = temp[r]; b,8{ X<  
for (i = l, j = r, k = l; k <= r; k++) { 1>L(ul(qGF  
if (a < b) { a1Qv@p^._b  
data[k] = temp[i++]; M:5b4$Qh<  
a = temp; y^o@"IYu3  
} else { gk`zA  
data[k] = temp[j--]; ^k<o T'89  
b = temp[j]; | >z3E z  
} KD^N)&k^Kp  
} WOh|U4vt  
} <]G]W/eB'  
z2Z^~, i  
/** E@Ad'_H  
* @param data XkyKBg-  
* @param l N!`e}Z6S  
* @param i ~Ch+5A;  
*/ qoAj] ")  
private void insertSort(int[] data, int start, int len) {  rb{P :MX  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); K(q-?n`<  
} U#U]Pt  
} P\_`   
} Qqlup  
} D.mHIsX6\  
O eL}EVs8=  
堆排序: o;?/HE%,[  
GH[wv<  
package org.rut.util.algorithm.support; L QjsOo  
B,{K*-7)MX  
import org.rut.util.algorithm.SortUtil; 7k8pZ  
PiA0]>  
/** {GJ@psG*  
* @author treeroot |7zd%!  
* @since 2006-2-2 nR`ov1RH  
* @version 1.0 o*J3C>  
*/ &iV,W4  
public class HeapSort implements SortUtil.Sort{ a1@Y3M Q;i  
|DsnNk0c  
/* (non-Javadoc) ^_m9KA  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) {D=@n4JO  
*/ h*v8#\b$J_  
public void sort(int[] data) { q`r**N+zn  
MaxHeap h=new MaxHeap(); o]opdw  
h.init(data); pa# IJ  
for(int i=0;i h.remove(); h2D>;k  
System.arraycopy(h.queue,1,data,0,data.length); uS^Ipxe\  
} /3{b%0Aa  
Ih"XV  
private static class MaxHeap{ " W|%~h  
ynrT a..  
void init(int[] data){ /Sh#_\x  
this.queue=new int[data.length+1]; LEtG|3Dx  
for(int i=0;i queue[++size]=data; 15sp|$&`  
fixUp(size); 9th,VnD0  
} q*9!,!e  
} xKho1Z  
a0#J9O_  
private int size=0; ( U xW;  
_D+J!f^  
private int[] queue; X)% A6M  
N}t 2Nu-  
public int get() { J7g8D{4  
return queue[1]; PAM}*'  
} :\o {_  
tw9f%p  
public void remove() { mV pMh#zw  
SortUtil.swap(queue,1,size--); b"{'T]"*j  
fixDown(1); WA&!;Zq  
} rQ qW_t%  
file://fixdown {Sj9%2'M)  
private void fixDown(int k) { Ptdpj)oi&Q  
int j; 2V#>)R#k  
while ((j = k << 1) <= size) { W*I(f]8:y`  
if (j < size %26amp;%26amp; queue[j] j++; BNs@n"k  
if (queue[k]>queue[j]) file://不用交换 D1=((`v '  
break; =D<PVGo9  
SortUtil.swap(queue,j,k); /PSd9N*=y  
k = j;  ^0 \  
} 7x%R:^*4  
} pz.JWCU1  
private void fixUp(int k) { :BV6y|J9O^  
while (k > 1) { dx@-/^.  
int j = k >> 1; .0`m\~L  
if (queue[j]>queue[k]) ,tu.2VQc@  
break; <"my^  
SortUtil.swap(queue,j,k); ]z/8KL  
k = j; N@Uy=?)ZJ  
} IvtJ0  
} 8b;1F Q'  
A"dR{8&0  
} |#cm`v  
.Z `av n  
} 7 *`h/  
Ay0U=#XP  
SortUtil: 9 %I?).5  
f\sQO&  
package org.rut.util.algorithm; oF1,QQ^dg  
%D%8^Zd_  
import org.rut.util.algorithm.support.BubbleSort; S]Mw #O|  
import org.rut.util.algorithm.support.HeapSort; ij(B,Y  
import org.rut.util.algorithm.support.ImprovedMergeSort; 8h*Icf  
import org.rut.util.algorithm.support.ImprovedQuickSort; m4hg'<<V  
import org.rut.util.algorithm.support.InsertSort; SVh 7zh  
import org.rut.util.algorithm.support.MergeSort; O @j} K4  
import org.rut.util.algorithm.support.QuickSort; i/`m`qdg  
import org.rut.util.algorithm.support.SelectionSort; jN;@=COi  
import org.rut.util.algorithm.support.ShellSort; &;[Io  
L(|N[#  
/** pm 9"4z  
* @author treeroot {byBc G  
* @since 2006-2-2 26I_YL,S  
* @version 1.0 Vr`R>S,-  
*/ !h23cj+V  
public class SortUtil { x7!L{(E3  
public final static int INSERT = 1; kwo3`b  
public final static int BUBBLE = 2; %In A+5s`  
public final static int SELECTION = 3; .*Ct bGw  
public final static int SHELL = 4; p6#g;$V$  
public final static int QUICK = 5; mGJKvJF   
public final static int IMPROVED_QUICK = 6; *rs5]U<  
public final static int MERGE = 7; CY s,`  
public final static int IMPROVED_MERGE = 8; ;o2$ Q  
public final static int HEAP = 9; P2BWuh F  
(:TjoXXiY  
public static void sort(int[] data) { cdl&9-}  
sort(data, IMPROVED_QUICK); ;=eDO(Ij  
} 7Bzq,2s  
private static String[] name={ - D  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" fk6%XO  
}; [!HEQ8 2g  
AN8`7F1  
private static Sort[] impl=new Sort[]{ f332J  
new InsertSort(), 4o <Uy  
new BubbleSort(), ;qafT@ }C  
new SelectionSort(), I7|Pi[e  
new ShellSort(), LtWP0@JA  
new QuickSort(), \o}xF@sM5  
new ImprovedQuickSort(), ); !eow  
new MergeSort(), M -cTRd-i  
new ImprovedMergeSort(), Neq+16*u  
new HeapSort() y~ AVei&  
}; c }Ft^Il  
a oD`=I*<  
public static String toString(int algorithm){ p4.wh|n  
return name[algorithm-1]; 8ndYV>{f  
} V+* P2|  
 8n#HFJ~  
public static void sort(int[] data, int algorithm) { c]x1HvPE  
impl[algorithm-1].sort(data); 8'r2D+Vwm  
} [w>$QR  
B8.Pn  
public static interface Sort { cv-PRH#  
public void sort(int[] data); 6]V4muz#c  
} @TLS<~  
<C1H36p  
public static void swap(int[] data, int i, int j) { mq aHwID  
int temp = data; 3c#BKHNC  
data = data[j]; SN9kFFIPb=  
data[j] = temp; 4x {0iav  
} "9ZID-~]  
} HmiR.e%<b  
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