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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。 ( v*xW.  
插入排序: kWW2N0~$  
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package org.rut.util.algorithm.support; ].Yz =:  
q8P&rMwy  
import org.rut.util.algorithm.SortUtil; J8)l,J"  
/** 7"!`<5o^  
* @author treeroot 7<su8*?  
* @since 2006-2-2 #G#gc`S-,  
* @version 1.0 =\lw.59  
*/ @ujwN([I  
public class InsertSort implements SortUtil.Sort{ Nvd(?+c  
lJ;Wi  
/* (non-Javadoc) ht>%O7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Q/g!h}>(.  
*/ P")I)> Q6  
public void sort(int[] data) { x3i}IC  
int temp; lpXGsK H2  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); hJ(vDv%  
} [mzed{p]]  
} Rq|6d M6H  
} ) A:h  
qb[hKp5K6  
} IL|Q-e}Ol  
|Y K,&  
冒泡排序: &{e ]S!D  
ulxlh8=  
package org.rut.util.algorithm.support; 1 tOslP@  
lU doMm  
import org.rut.util.algorithm.SortUtil; WkXgz6 P  
]A2E2~~G  
/** B>nj{W<o  
* @author treeroot X$5  
* @since 2006-2-2 joI)6c  
* @version 1.0 <\O+  
*/ - )(5^OQ  
public class BubbleSort implements SortUtil.Sort{ 1(@$bsgu2  
c:m=9>3  
/* (non-Javadoc) f- (i%  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) \2kLj2!  
*/ &%rM|  
public void sort(int[] data) { Xr  <H^X  
int temp; l_}d Q&R  
for(int i=0;i for(int j=data.length-1;j>i;j--){ |RL#BKC`  
if(data[j] SortUtil.swap(data,j,j-1); `h@fW- r  
} \96\!7$@O  
} Zp)=l Td  
} $w*L' <  
} O[VY|.MEk  
O &<p 8  
} ]L~NYe9  
F ,472H  
选择排序: >OaD7  
&IN%2c  
package org.rut.util.algorithm.support; Y'iI_cg  
4 -.W~C'Q  
import org.rut.util.algorithm.SortUtil; WGz)-IB!PE  
k&ooV4#f6  
/** ]qqgEZ1!Y  
* @author treeroot rnZ$Qk-H  
* @since 2006-2-2 "`ftcJUd  
* @version 1.0 lQ?jdi  
*/ Wu 0:X*>}p  
public class SelectionSort implements SortUtil.Sort { e ymv/  
p XXf5adl<  
/* b7>'ARdbzX  
* (non-Javadoc) V<UChD)N`  
* J'Pyn  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) vS\2zwb}  
*/ *,JE[M  
public void sort(int[] data) { o#p%IGG`  
int temp; k4iiL<|  
for (int i = 0; i < data.length; i++) { yU!1q}L!  
int lowIndex = i; ES4Wtc)&  
for (int j = data.length - 1; j > i; j--) { ^:-GPr  
if (data[j] < data[lowIndex]) { 6C&&="uww  
lowIndex = j; ai-s9r'MI?  
} 7}VqXUwabx  
} 3`cA!ZVQ  
SortUtil.swap(data,i,lowIndex); GCJ[xn(_  
} srf}+>u&  
} #B5,k|"/,M  
o{y}c->  
} ?)1Y|W'Rv  
xoo,}EY  
Shell排序: kY$EK]s  
XY| y1L 3[  
package org.rut.util.algorithm.support; 44} 5o  
f7a4E+}  
import org.rut.util.algorithm.SortUtil; ]^C 8Oh<  
1_TuA(  
/** T`!R ki%~  
* @author treeroot VVDN3  
* @since 2006-2-2 cuN]}=D  
* @version 1.0 tQ{/9bN?P  
*/ ;+wB!/k,  
public class ShellSort implements SortUtil.Sort{ nmU1xv_  
'|4+< #  
/* (non-Javadoc) \Sd8PGl*'  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) H<Sf0>OA  
*/ (1'DZ xJ&u  
public void sort(int[] data) { 7,SQz6]  
for(int i=data.length/2;i>2;i/=2){ gNEcE9y 2  
for(int j=0;j insertSort(data,j,i); {K.H09Y  
} yus3GqPI  
} |@AXW   
insertSort(data,0,1); lfj5?y  
} [@Ac#  
w6s[|i)&  
/** uHI(-!O  
* @param data Lyhuyb)k5^  
* @param j  ?CAU+/  
* @param i [1vm~w'  
*/ g.&B8e  
private void insertSort(int[] data, int start, int inc) { m,Y/ke\  
int temp; ZK]qQrIwy  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); /u$'=!<b;  
} ==[(Mn,%d  
} J|BElBY  
} Xd+H()nR  
vb=]00c  
} Y2DL%'K^  
 tA#$q;S  
快速排序: x/O;8^b  
SxY z)aF~  
package org.rut.util.algorithm.support; i]c{(gd`  
Rv&"h_"t  
import org.rut.util.algorithm.SortUtil; jg?UwR&  
'u<e<hU  
/** G^Gs/- f  
* @author treeroot U"7o;q  
* @since 2006-2-2 X_2N9$},  
* @version 1.0 w80X~  
*/ K(?V]Mxl6  
public class QuickSort implements SortUtil.Sort{ dq '2y  
9}6_B|  
/* (non-Javadoc) >B{qPrmI  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]pvHsiI:  
*/ MZz9R*_VS  
public void sort(int[] data) { ]W?cy  
quickSort(data,0,data.length-1); z}Cjk6z@  
} %<>:$4U@]  
private void quickSort(int[] data,int i,int j){ $L^%*DkM  
int pivotIndex=(i+j)/2; 5$ =[x!x  
file://swap %!\=$s}g  
SortUtil.swap(data,pivotIndex,j); 5b:1+5iF-  
?V2P]|  
int k=partition(data,i-1,j,data[j]); 9&* 7+!  
SortUtil.swap(data,k,j); L"'=[O~  
if((k-i)>1) quickSort(data,i,k-1); pX_  
if((j-k)>1) quickSort(data,k+1,j); Dd1k?  
:Vxt2@p{  
} fDsT@W,K  
/** Bb=r?;zjO  
* @param data :=B.)]F.)  
* @param i E.*hY+kGZ  
* @param j J920A^)j!  
* @return 0HWSdf|w  
*/ 3g;Y  
private int partition(int[] data, int l, int r,int pivot) { d7kE}{,  
do{ {O>Td9  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); 7SHllZ  
SortUtil.swap(data,l,r); 0G8@UJv6  
} ;((t|  
while(l SortUtil.swap(data,l,r); 'KjH|u  
return l; XdJD"|,h  
} US)i"l7:H*  
us.[wp'Sh  
} %O9Wm_%  
~S('\h)1  
改进后的快速排序: ^Z)7Z% O  
_9=87u0  
package org.rut.util.algorithm.support; `e ZDG  
<ci(5M  
import org.rut.util.algorithm.SortUtil; 7;p/S#P:  
bR7tmJ[)Z  
/** c $1u  
* @author treeroot JAHg_!  
* @since 2006-2-2 2e\"?yOD  
* @version 1.0 Yuv=<V  
*/ _zDS-e@  
public class ImprovedQuickSort implements SortUtil.Sort { Y A,. C4=s  
jP<6J(  
private static int MAX_STACK_SIZE=4096; g ba1R  
private static int THRESHOLD=10; rCa]T@=  
/* (non-Javadoc) Oey Ph9^V  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) P1OYS\  
*/ drAJ-ii  
public void sort(int[] data) { :WWHEZK  
int[] stack=new int[MAX_STACK_SIZE]; h.?<( I  
ky|kg@n{  
int top=-1; B-LV/WJ_  
int pivot; UhJS=YvT  
int pivotIndex,l,r; lai@,_<GV  
Ia%cc L=  
stack[++top]=0; e5AsX.kv B  
stack[++top]=data.length-1; 3DO*kM1s@  
J ?{sTj"KB  
while(top>0){ B4un6-<i  
int j=stack[top--]; 2`Bb9&ut>  
int i=stack[top--]; ,$!fyi[;C  
C)m@/w  
pivotIndex=(i+j)/2; O_ r-(wE4  
pivot=data[pivotIndex]; I0l3"5X a  
cWnEp';.  
SortUtil.swap(data,pivotIndex,j); y3( ~8n  
rWWp P<  
file://partition z@UH[>^gj  
l=i-1; @wD#+Oz  
r=j; AM?ZhM  
do{ \GHj_r  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); gIweL{Pc  
SortUtil.swap(data,l,r); )r"R  
} Z<|x6%  
while(l SortUtil.swap(data,l,r); @B0fRG y  
SortUtil.swap(data,l,j); @8\0@[]  
v3[ZPc;;  
if((l-i)>THRESHOLD){ W ~MNst?  
stack[++top]=i; <>KQ8:  
stack[++top]=l-1; alRz@N  
} 5n>zJ ~  
if((j-l)>THRESHOLD){ WMKxGZg"  
stack[++top]=l+1; lre(]oBXA  
stack[++top]=j; \=RV?mI3?  
} _H U>T  
{6LS$3}VM  
} 6 [bQ'Ir^8  
file://new InsertSort().sort(data); N\ <riS9  
insertSort(data); }qGd*k0F0  
} L|{vkkBo  
/** -^_^ByJe  
* @param data }cUO+)!Y  
*/ qCVb-f  
private void insertSort(int[] data) { w:I!{iX  
int temp; >G1]#'6;  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); <b~~X`Z  
} ;]R5:LbXS  
} KKk<wya&O  
} ymrnu-p o  
,4,Bc<  
} F'wG%  
'ym Mu}q  
归并排序: DQ$m@_/4w  
OtAAzc!dQ  
package org.rut.util.algorithm.support; k{!9 f=^   
BSkmFd(*  
import org.rut.util.algorithm.SortUtil; \Dr( /n  
,W 'P8C  
/** b$Ei>%'/";  
* @author treeroot y:zNf?6&  
* @since 2006-2-2 B!x6N"  
* @version 1.0 ,WsG,Q(K  
*/ guCCu2OTA%  
public class MergeSort implements SortUtil.Sort{ ?1|\(W#  
g9Dynm5  
/* (non-Javadoc) q(EN]W],  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wg k[_i  
*/ 3 q8S  
public void sort(int[] data) { ~mHrgxQ-  
int[] temp=new int[data.length]; 0T@axQ[%  
mergeSort(data,temp,0,data.length-1); z2R?GQ5 A  
} d8Cd4qIXX  
>} Mw"   
private void mergeSort(int[] data,int[] temp,int l,int r){ ME>Sh~C\  
int mid=(l+r)/2; n[;)(  
if(l==r) return ; V~8]ag4  
mergeSort(data,temp,l,mid); lRS'M,/  
mergeSort(data,temp,mid+1,r); %IIFLlD  
for(int i=l;i<=r;i++){ iig4JP'h  
temp=data; x*j eCD,  
} //3fgoly  
int i1=l; `"V}Wq ?I  
int i2=mid+1; -jNnx*  
for(int cur=l;cur<=r;cur++){ rw 2i_,.*~  
if(i1==mid+1) B}zBbB  
data[cur]=temp[i2++]; :rk6Stn$z  
else if(i2>r) Ii3F|Vb G  
data[cur]=temp[i1++]; 1#|lt\T  
else if(temp[i1] data[cur]=temp[i1++]; L;Ynq<x  
else @}r s6 G  
data[cur]=temp[i2++]; Nw ,|4S  
} wqjR-$c  
} qs8^qn0A  
^\S~rW.3_  
} ~4#D G^5  
M`iE'x  
改进后的归并排序: Q`O~f<a  
bO('y@)X  
package org.rut.util.algorithm.support; TQ~a5q  
b"Nd8f[  
import org.rut.util.algorithm.SortUtil; Rw63{b/  
zDm3 $P=  
/** E&"V~  
* @author treeroot mU[  
* @since 2006-2-2 [Ak 0kH >  
* @version 1.0 &\ad.O/Q  
*/ U.Z5;E0:  
public class ImprovedMergeSort implements SortUtil.Sort { 0Bkc93  
;B }4pv}  
private static final int THRESHOLD = 10; lN"@5(5%  
?{L'd  
/* hq&9S{Ep  
* (non-Javadoc) ww+,GnV  
* A&ceuu  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Rb^G~82d?  
*/ sw:a(o&$  
public void sort(int[] data) { m.gv?  
int[] temp=new int[data.length]; 6B b+f"  
mergeSort(data,temp,0,data.length-1); roi,?B_8  
} 7 > _vH]  
}QCn>LXE  
private void mergeSort(int[] data, int[] temp, int l, int r) { Jh4pY#aF  
int i, j, k; Gy6x.GX  
int mid = (l + r) / 2; O"X7 DgbC  
if (l == r) GUJ?6;  
return; WFmW[< g  
if ((mid - l) >= THRESHOLD) !4z vkJO  
mergeSort(data, temp, l, mid); 4kK_S.&  
else zTq"kxn'  
insertSort(data, l, mid - l + 1); %5n'+-XVj  
if ((r - mid) > THRESHOLD) %Yg|QBm|  
mergeSort(data, temp, mid + 1, r); _Wp.s]D [  
else " w /Odd  
insertSort(data, mid + 1, r - mid); E2=vLI]  
tp"eXA0n  
for (i = l; i <= mid; i++) { ! P$[$W  
temp = data; #*S.26P^4  
} (BK_A {5  
for (j = 1; j <= r - mid; j++) { ?5% o-hB|  
temp[r - j + 1] = data[j + mid]; n-GoG(s..b  
} Aeq^s  
int a = temp[l]; (b1e!gJpy  
int b = temp[r]; n0V^/j}  
for (i = l, j = r, k = l; k <= r; k++) { @L 6)RF  
if (a < b) { tHM0]Gb}  
data[k] = temp[i++]; OeZ"WO  
a = temp; HqyAo]{GN  
} else { JZ> (h  
data[k] = temp[j--]; w)R5@ @C*  
b = temp[j]; s._,IW;   
} g">^#^hBE  
} {=,I>w]T|W  
} S`TQWWQo;  
.jbxA2  
/** CFoR!r:X  
* @param data r&F 6ZCw  
* @param l 4`o<e)c3  
* @param i n7/&NiHxv/  
*/ nYBa+>3BDf  
private void insertSort(int[] data, int start, int len) { ^nFP#J)_5  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); ?1LRR ;-x  
} ^q|W@uG-(  
} }Q6o#oZ  
} v@J[qpX  
} ?jvuTS2  
ZhC ,nbM  
堆排序: oDt{;S8|]  
rz%^l1@-  
package org.rut.util.algorithm.support; E>r7A5Uo  
*l%&/\  
import org.rut.util.algorithm.SortUtil; &xt GabNk  
Z@>kqJ%  
/** s+=':Gcb(C  
* @author treeroot p3T:Y_  
* @since 2006-2-2 rJRg4Rog  
* @version 1.0 x2OAkkH\]i  
*/ /?S^#q>m%  
public class HeapSort implements SortUtil.Sort{ xm=$D6O:  
& Yx12B\  
/* (non-Javadoc) `UqX`MFz  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) rP!GS _RG  
*/  5IF$M2j  
public void sort(int[] data) { L gy^^.  
MaxHeap h=new MaxHeap(); {r5OtYmpR  
h.init(data); )dJx82" l  
for(int i=0;i h.remove(); cVr+Wp7K#|  
System.arraycopy(h.queue,1,data,0,data.length); G9GLRdP  
} YJ~mcaw  
O*W<za;  
private static class MaxHeap{ sN#ju5  
$>+g)  
void init(int[] data){ >Ml5QO$*.q  
this.queue=new int[data.length+1]; {:Kr't<XzF  
for(int i=0;i queue[++size]=data; ?|\wJrM ]  
fixUp(size); B`jq"[w]-  
} 1i)3!fH0:  
} Jz P0D'  
h[<l2fy  
private int size=0; aEVy20wd  
{.y_{yWo  
private int[] queue; C46jVl   
#~.RJ%  
public int get() { Io&HzQW^a  
return queue[1]; de TD|R  
} dT (i*E\j  
^r mQMjF  
public void remove() { <~:2~r  
SortUtil.swap(queue,1,size--); T4[/_;1g  
fixDown(1); 1083p9Uh  
} ovDPnf(  
file://fixdown sc6NON#  
private void fixDown(int k) { j9vK~_?;  
int j; [8 H:5 Ho  
while ((j = k << 1) <= size) { ZNL+w4  
if (j < size %26amp;%26amp; queue[j] j++; g=,}j]tl  
if (queue[k]>queue[j]) file://不用交换 qOnGP{   
break; TNK1E  
SortUtil.swap(queue,j,k); 3=*ur( Qy  
k = j; N0JdU4'  
} `46.!  
} ,(f W0d#  
private void fixUp(int k) { -8<vWe  
while (k > 1) { @~UQU)-(  
int j = k >> 1; ;P/ 4.|<  
if (queue[j]>queue[k]) GS}JyU  
break; 9jM7z/Ff  
SortUtil.swap(queue,j,k); DVJn;X^T:  
k = j; {];-b0MS~  
} n+i=Ff  
} KDH<T4#x  
:F@goiuC  
} ErQ6a%~,  
UP%6s:>:  
} "^;h'  
7T t!h f  
SortUtil: ]]3rSXs2}J  
j]vEo~Bbh  
package org.rut.util.algorithm; Nd{U|k3pL  
j2.7b1s  
import org.rut.util.algorithm.support.BubbleSort; S kB*w'k  
import org.rut.util.algorithm.support.HeapSort; yf4L0.  
import org.rut.util.algorithm.support.ImprovedMergeSort; TY'61xWi  
import org.rut.util.algorithm.support.ImprovedQuickSort; @2 *Q*  
import org.rut.util.algorithm.support.InsertSort; =)gdxywoC  
import org.rut.util.algorithm.support.MergeSort; WIpV'F|t]`  
import org.rut.util.algorithm.support.QuickSort; fGRV]6?V  
import org.rut.util.algorithm.support.SelectionSort; 6<R[hIWpZ}  
import org.rut.util.algorithm.support.ShellSort; 5NH4C  
4-Jwy  
/** K>b4(^lf  
* @author treeroot U~;tk@  
* @since 2006-2-2 kRBO]  
* @version 1.0 =;b3i1'U  
*/ qd#7A ksm  
public class SortUtil { 3JkdPh  
public final static int INSERT = 1; a/1;|1a.  
public final static int BUBBLE = 2; 5Dz$_2oM3  
public final static int SELECTION = 3; 9cU9'r# h  
public final static int SHELL = 4; x{tlC}t  
public final static int QUICK = 5; dM P'Vnfj  
public final static int IMPROVED_QUICK = 6; `Pc<0*`a  
public final static int MERGE = 7; !6@'H4cb=  
public final static int IMPROVED_MERGE = 8; -5ZmIlL.S  
public final static int HEAP = 9; BMuEfa^  
Jmi,;Af'/  
public static void sort(int[] data) { c %Cbq0+2  
sort(data, IMPROVED_QUICK); qMA-#  
} *f`P7q*  
private static String[] name={ \g h |G  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" _L$a[zH  
}; 2CneRKQy  
0Oc?:R'$  
private static Sort[] impl=new Sort[]{ $(]nl%<Q  
new InsertSort(), X{OWDy  
new BubbleSort(), !2Z"Lm  
new SelectionSort(), ' VKD$q  
new ShellSort(), :."oWqb)  
new QuickSort(), n+te5_F  
new ImprovedQuickSort(), jlFlhj:/I  
new MergeSort(), wJCw6&D,/  
new ImprovedMergeSort(), 6N5(DD  
new HeapSort() Ke?,AWfG  
}; j%^4 1y  
w D r/T3  
public static String toString(int algorithm){ "42/P4:  
return name[algorithm-1]; |%mZ|,[  
} FO:L+&hr?>  
^\?Rh(pu  
public static void sort(int[] data, int algorithm) { s&-MJ05y  
impl[algorithm-1].sort(data); aekke//y  
} *kg->J  
?+^p$'5  
public static interface Sort { a.}#nSYP  
public void sort(int[] data); {\P%J:s#9  
} r~ 2*'zB  
x3+ {Y  
public static void swap(int[] data, int i, int j) { E G\;l9T  
int temp = data; 6w, "i#E!  
data = data[j]; WKlyOK=}  
data[j] = temp; kP ,8[r  
} jy?*`q1]  
} 'wG1un;t  
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