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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。 %\HE1d5;  
插入排序: g%Tokl  
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package org.rut.util.algorithm.support; =v^#MU{k?  
zWU]4;,"  
import org.rut.util.algorithm.SortUtil; I4%kYp]  
/** ,+ IFV  
* @author treeroot ;=$;h6W0  
* @since 2006-2-2 dhA~Yu  
* @version 1.0 d+G%\qpzQ  
*/ 1#c Tk  
public class InsertSort implements SortUtil.Sort{ 'm`}XGUBS  
iJE:>qOTD5  
/* (non-Javadoc) %y9sC1T  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) oh:9v+  
*/ ]B;`Jf  
public void sort(int[] data) { w>cqsTq  
int temp; uWKmINjv'  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); l!XCYg@67  
} ~C^:SND7  
} Z8Ig,  
} ~b*]jZwT  
Pb;c:HeI/  
} 6QA`u*  
AB\Ya4O"9  
冒泡排序: "[P3b"=gW  
I;"pPJ3G  
package org.rut.util.algorithm.support; m W>Iib|  
L!*+: L DL  
import org.rut.util.algorithm.SortUtil; <A=1]'1\r  
czIAx1R9  
/** deaB_cjdI  
* @author treeroot ~IW{^u  
* @since 2006-2-2 j24 3oD  
* @version 1.0 ssLswb  
*/ dq.U#Rhrx  
public class BubbleSort implements SortUtil.Sort{ r@C~_LgL)  
:0B 7lDw  
/* (non-Javadoc) 4@{?4k-cq  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ,DE>:ARZ  
*/ 6 /YJA*  
public void sort(int[] data) { kd!?N  
int temp; q 0F6MAXj  
for(int i=0;i for(int j=data.length-1;j>i;j--){ FfM^2`xP  
if(data[j] SortUtil.swap(data,j,j-1); }NyQ<,+mq&  
} QPB,B>Z  
} 5\z<xpJ  
} uU3A,-{-  
} G`n $A/9Q  
CR'%=N04^  
} "g5{NjimY  
8O]`3oa>  
选择排序: 4zS0kk;+  
DNq(\@x[!  
package org.rut.util.algorithm.support; pml33^*<U  
& V>rq'~;  
import org.rut.util.algorithm.SortUtil; ~x8nC%qPvq  
1b1Ab zN  
/** =W3 K6w  
* @author treeroot mTI`^e  
* @since 2006-2-2 SC~k4&xy  
* @version 1.0 M]r?m@)  
*/ !\4B.  
public class SelectionSort implements SortUtil.Sort { GqRXNs!  
j~{cT/5Y_  
/* :+Ukwno?/  
* (non-Javadoc) \wA:58 -j  
* ErNYiYLi]  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) /_l\7MeI  
*/ At:8+S<?A  
public void sort(int[] data) { Su,:f_If,  
int temp; {7goYzQsi%  
for (int i = 0; i < data.length; i++) { dW4jkjap  
int lowIndex = i; nte?a e  
for (int j = data.length - 1; j > i; j--) { b`-|7<s  
if (data[j] < data[lowIndex]) { ia'z9  
lowIndex = j;  eo9/  
} V#dga5*]  
} QKj0~ia 5  
SortUtil.swap(data,i,lowIndex); RJ3oI+gI  
} ;`#R9\C=h  
} O,B\|pd2  
uem-fTG  
} z;S-Q,  
aL;!BlU8v  
Shell排序: 2HFn\kjj.s  
Z#d#n!Lz  
package org.rut.util.algorithm.support; v~Q'm1!O4\  
oa:YAq T  
import org.rut.util.algorithm.SortUtil; /J#(8p  
mtv8Bm=<  
/** gY~r{  
* @author treeroot *vaYI3{qN  
* @since 2006-2-2 0MHiW=  
* @version 1.0 @zg}x0]  
*/ }9S}?R  
public class ShellSort implements SortUtil.Sort{ R7bG!1SHl  
lDYgt UKG  
/* (non-Javadoc) [7v|bd  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 5^Qa8yA>7  
*/ !y _{mE?V(  
public void sort(int[] data) { |Ghk8 WA  
for(int i=data.length/2;i>2;i/=2){ Q6Gw!!Z5EA  
for(int j=0;j insertSort(data,j,i); zi-_l  
} #Lhv=0op  
} G|g^yaq>  
insertSort(data,0,1); nQc#AFg  
} @yuiNj .T  
bT.q@oU  
/** gN=.}$Kfu  
* @param data G>V6{g2Q  
* @param j n"EKVw7Y  
* @param i X 0y$xC|<  
*/ T^}UE<  
private void insertSort(int[] data, int start, int inc) { sW[-qPK<  
int temp; jfuHZ^YA  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); D!&(#Vl _  
} P"vrYom  
} k]@]a  
} A;TP~xq\  
7QsD"rL  
} "313eeIt%i  
GI%&.Vd  
快速排序: F_ F"3'[  
q\0/6tl_  
package org.rut.util.algorithm.support; sAkr-x?+M  
J$3g3%t  
import org.rut.util.algorithm.SortUtil; @ma(py  
\Rny*px  
/** (&:gD4.  
* @author treeroot dVQ[@u1,  
* @since 2006-2-2 X06Lr!-%  
* @version 1.0 I_J&>}V'  
*/ [*',pG  
public class QuickSort implements SortUtil.Sort{ s6bsVAO>  
bHwEd%f  
/* (non-Javadoc) m^_=^z+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) kU<t~+  
*/ ~K;QdV=YX  
public void sort(int[] data) { ":Dm/g  
quickSort(data,0,data.length-1); iQ)ydY a  
} W7>2&$  
private void quickSort(int[] data,int i,int j){ sl]< A[jR  
int pivotIndex=(i+j)/2; >d/H4;8  
file://swap Gnkar[oa&  
SortUtil.swap(data,pivotIndex,j); OR <+y~Rv  
3z+l-QO8  
int k=partition(data,i-1,j,data[j]); o<`hj&s  
SortUtil.swap(data,k,j); =gB5JB<}2  
if((k-i)>1) quickSort(data,i,k-1); ^|Q]WHNFB  
if((j-k)>1) quickSort(data,k+1,j); ":Wq<Z'  
kWzN {]v  
} EbC!tR  
/** >@YefNX6  
* @param data tEhg',2t(  
* @param i qLN\%}69/  
* @param j A]z*#+Sl  
* @return 7>E.0DP  
*/ K;?D^n.  
private int partition(int[] data, int l, int r,int pivot) { P-@MLIC{  
do{ 7zM:z,  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); cl4E6\?z  
SortUtil.swap(data,l,r); ^Bx[%  
} fj_23{,/"g  
while(l SortUtil.swap(data,l,r); {7NGfzwp;6  
return l; wcGK *sWG-  
} S#/%#k103  
*pKTJP  
} }47h0 i  
++0)KSvw  
改进后的快速排序: %M(RV_R+6  
c3vb~l)  
package org.rut.util.algorithm.support; cw Obq\  
aB]0?C y9(  
import org.rut.util.algorithm.SortUtil; 4DA34m(  
~^m Uu`@r  
/** [{x}# oRSE  
* @author treeroot xnP!P2  
* @since 2006-2-2 ^jdU4  
* @version 1.0 ag=d6q  
*/ t'qYM5  
public class ImprovedQuickSort implements SortUtil.Sort { >yBq i^aL  
9j,g&G.K  
private static int MAX_STACK_SIZE=4096; n>M`wF>  
private static int THRESHOLD=10; .w2ID  
/* (non-Javadoc) h!EA;2yGKa  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) tq3Wga!5  
*/ }r,\0Wm  
public void sort(int[] data) { E[H  
int[] stack=new int[MAX_STACK_SIZE]; FKa";f"  
X\|!  
int top=-1; Tg\bpLk0=  
int pivot; YDt+1Kw}D  
int pivotIndex,l,r; y>^a~}Zq  
G95,J/w  
stack[++top]=0; {Mx(|)WkL  
stack[++top]=data.length-1; ^t;z;.g  
ks '>?Dw  
while(top>0){ (Fv tL*  
int j=stack[top--]; xs$$fPAQ  
int i=stack[top--]; n<I{x^!  
rwm^{Qa  
pivotIndex=(i+j)/2; IPiV_c-l  
pivot=data[pivotIndex]; sibYJKOy  
]-fkmnmWX  
SortUtil.swap(data,pivotIndex,j); :GHv3hn5  
m>>.N?  
file://partition JAPr[O&  
l=i-1; _VtQMg|u  
r=j; {zdMmpQF  
do{ ZCiCZ)oc  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); 1yy?1&88S  
SortUtil.swap(data,l,r); wX$:NOO  
} /ZLY@&M  
while(l SortUtil.swap(data,l,r); vvoxK0  
SortUtil.swap(data,l,j); / HTY>b  
GD W@/oQr  
if((l-i)>THRESHOLD){ gYpMwC{*d  
stack[++top]=i; Ui{%q @  
stack[++top]=l-1; $pGT1oF[E  
} f:T?oR>2  
if((j-l)>THRESHOLD){ % RSZ.  
stack[++top]=l+1; KyvZ? R  
stack[++top]=j; Tb/TP3N  
} Tkbao D  
I[ \~ pi,  
} UM}u(;oo%)  
file://new InsertSort().sort(data); eI #Gx_mg  
insertSort(data); APQq F/  
} 6b|?@  
/** 8)i""OD@I  
* @param data |{jT+  
*/ Jd2.j?P=  
private void insertSort(int[] data) { s27IeF3  
int temp; r~w.J+W  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); 39pG-otJ  
} L * n K> +  
} =bVPHrKNQ  
} /?\3%<vn  
G dgL}"*F  
} 2z.ot'  
Hvl n>x@  
归并排序: c\bL_  
{pzj@b 1S  
package org.rut.util.algorithm.support; 0c_xPBbB+  
W :w~ M'o  
import org.rut.util.algorithm.SortUtil; s}D>.9  
]BQYVx/  
/** @ [$_cGR7  
* @author treeroot y4V:)@ P  
* @since 2006-2-2 s0kp(t!fiu  
* @version 1.0 S}m_XR]  
*/ V7ph^^sC}  
public class MergeSort implements SortUtil.Sort{ G=dzP}B'WA  
$Y$9]G":  
/* (non-Javadoc) #el27"QP0  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) NE995;  
*/ iyskADS  
public void sort(int[] data) { lOIk$"Ne  
int[] temp=new int[data.length]; >4 OXG7.&f  
mergeSort(data,temp,0,data.length-1);  ao(T81  
} 1GY2aZ@  
%|Ps|iV  
private void mergeSort(int[] data,int[] temp,int l,int r){ [U\?+@E*  
int mid=(l+r)/2; |s|}u`(@9  
if(l==r) return ; 98m|&7  
mergeSort(data,temp,l,mid); 95DEuReKi  
mergeSort(data,temp,mid+1,r); Zed Fhm  
for(int i=l;i<=r;i++){ 8H F^^Cva  
temp=data; xU *:a[g  
} !-gU~0  
int i1=l; 8fR(y~_gF  
int i2=mid+1; K*6"c.D  
for(int cur=l;cur<=r;cur++){ k[=qx{Osx%  
if(i1==mid+1) 0lw>mxN  
data[cur]=temp[i2++]; X/!_>@`7?  
else if(i2>r) PnsBDf%v  
data[cur]=temp[i1++]; Jh[0xb  
else if(temp[i1] data[cur]=temp[i1++]; GK?ual1  
else HpwMm^  
data[cur]=temp[i2++]; 74s{b]jN'-  
} |<%!9Z  
} KKeMi@N  
{]vD@)k  
} >1y6DC  
jDzQw>T X  
改进后的归并排序: 1Pf(.&/9_  
S_}`'Z )  
package org.rut.util.algorithm.support; en<mm#Ab  
Lu.zc='\  
import org.rut.util.algorithm.SortUtil;  *kr/,_K  
>rG>Bz^Pu  
/** Io6/Fv>!  
* @author treeroot yNu_>!Cp5  
* @since 2006-2-2 {.Tx70kn  
* @version 1.0 18g_v"6o  
*/ :_{8amO  
public class ImprovedMergeSort implements SortUtil.Sort { UD I{4+z  
.UyE|t4  
private static final int THRESHOLD = 10; HL)!p8UHJ  
V35Vi6*p  
/* 7y=>Wa?T[  
* (non-Javadoc) !^J;S%MB:K  
* sXKkZ+2q  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) lU WXXuO]  
*/ 7Z-j'pq  
public void sort(int[] data) { -@TY8#O#-  
int[] temp=new int[data.length]; 9tiZIm93]  
mergeSort(data,temp,0,data.length-1); g40Hj Y  
} P<<$o-a"  
]5!3|UYS  
private void mergeSort(int[] data, int[] temp, int l, int r) { ?H{[u rLn  
int i, j, k; N(/)e  
int mid = (l + r) / 2; QV4|f[Ki%  
if (l == r) @SQsEq+A?\  
return; z*@eQauA  
if ((mid - l) >= THRESHOLD) b0P3S!E  
mergeSort(data, temp, l, mid); tjdPi a  
else A2 l?F  
insertSort(data, l, mid - l + 1); |Q?h"5i"(  
if ((r - mid) > THRESHOLD) 6Z\aJ  
mergeSort(data, temp, mid + 1, r); 'o$j~Mr  
else Z:4/lx7Bq  
insertSort(data, mid + 1, r - mid); ,GbmL8P7Y  
 56.!L  
for (i = l; i <= mid; i++) { 0.GFg${v`  
temp = data; z2=bbm:  
} V>6klA}o  
for (j = 1; j <= r - mid; j++) { $ {yc t  
temp[r - j + 1] = data[j + mid]; 4vhf!!1  
}  MlO OB  
int a = temp[l]; -Cf)`/  
int b = temp[r]; }$6L]   
for (i = l, j = r, k = l; k <= r; k++) { oOFTQB_6  
if (a < b) { nep#L>LP$x  
data[k] = temp[i++]; ttP7-y  
a = temp; gt kV=V  
} else { ^W |YE72Y  
data[k] = temp[j--]; %"RJi?  
b = temp[j]; ]lWqV  
} X+vKY  
} I8H3*DE  
} ^z,3#gK  
uU  d"l,V  
/** *_V+K  
* @param data rYUIFPN  
* @param l $H:!3 -/  
* @param i S zo'[/ [R  
*/ xATx2*@X2  
private void insertSort(int[] data, int start, int len) { ">V&{a-C4  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); (* -wiL  
} /ViY:-8s  
} J,W<ha*  
} +{UY9_~\3  
} "ubp`7%67  
#~0Nk6*u  
堆排序: L*z=!Dpo  
/$^Tou/v  
package org.rut.util.algorithm.support; :X>Wd+lY:_  
Q_mphW:[  
import org.rut.util.algorithm.SortUtil; -jH|L{Iyq}  
dPUe5k)G_  
/** 1M ?BSH{  
* @author treeroot Rv1W&s&  
* @since 2006-2-2  Y@,iDQ  
* @version 1.0 a~}q]o?j  
*/ $4bc!  
public class HeapSort implements SortUtil.Sort{ F:j@JMpQ  
osC?2.  
/* (non-Javadoc) .7iRV  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) i_qY=*a?y  
*/ \w9}O2lL  
public void sort(int[] data) { E@VQxB7+  
MaxHeap h=new MaxHeap(); (s8b?Ol/  
h.init(data); zJQh~)  
for(int i=0;i h.remove(); ;zCUx*{  
System.arraycopy(h.queue,1,data,0,data.length); VcjbRpTy&  
} Q14zc0N  
ay"jWL-  
private static class MaxHeap{ k1&9 bgI  
`46~j  
void init(int[] data){ g`fG84  
this.queue=new int[data.length+1]; *s6 x  
for(int i=0;i queue[++size]=data; zs$r>rlO  
fixUp(size); $6"sRI6u  
} 9A |A@E#  
} /=2aD5r  
_p$/.~Xo9  
private int size=0; \ o<ucp\J  
3,PR6a,b'  
private int[] queue; U`v2Yw3E  
IDct!53~  
public int get() { k 9i W1  
return queue[1]; s-p)^B  
} HxI6_>n^I  
J4bP(=w!  
public void remove() { A?R`~*Q5  
SortUtil.swap(queue,1,size--); 91OxUVd  
fixDown(1); 2z>-H595az  
} ;"dX]":  
file://fixdown }*fBHzNN  
private void fixDown(int k) { rPH7 ]]  
int j; \Vc[/Qp7Bb  
while ((j = k << 1) <= size) { rr# nBhh8  
if (j < size %26amp;%26amp; queue[j] j++; 9r%fBiSk  
if (queue[k]>queue[j]) file://不用交换 <':h/ d  
break; }`R,C~-|^  
SortUtil.swap(queue,j,k); uq5?t  
k = j; 4`O[U#?  
} EN m%(G$  
} Zue3Z{31T  
private void fixUp(int k) { OP/DWf  
while (k > 1) { JFv70rBe  
int j = k >> 1; SxF'2ii  
if (queue[j]>queue[k]) aH }/+Hu-  
break; kn3w6]  
SortUtil.swap(queue,j,k); RELNWr  
k = j; <4rnOQ:  
} p)biOG  
} {-A|f  
$dM_uSt  
} BN*:*cmUl  
[f+wP|NKL  
} K0w}l" )A  
HZ3;2k  
SortUtil: S:1[CNL;  
CPB{eQeDuv  
package org.rut.util.algorithm; Es>' N3A z  
1$Hou   
import org.rut.util.algorithm.support.BubbleSort; Q4XlYgIV2A  
import org.rut.util.algorithm.support.HeapSort; oh5'Isb$  
import org.rut.util.algorithm.support.ImprovedMergeSort; sL@\,]Y  
import org.rut.util.algorithm.support.ImprovedQuickSort; SZGR9/* ^  
import org.rut.util.algorithm.support.InsertSort; BX_yC=S  
import org.rut.util.algorithm.support.MergeSort; ns~]a:1yh  
import org.rut.util.algorithm.support.QuickSort; 2u.0AG   
import org.rut.util.algorithm.support.SelectionSort; ^ITF*  
import org.rut.util.algorithm.support.ShellSort; rHKO13WF  
d(IJ-qJ N  
/** bi8_5I[  
* @author treeroot qU26i"GHp  
* @since 2006-2-2 v_KO xV:<`  
* @version 1.0 _[rFnyC+0V  
*/ { ^o.f  
public class SortUtil { l~Jd>9DwY  
public final static int INSERT = 1; !Yof%%m$;  
public final static int BUBBLE = 2; X>I3N?5  
public final static int SELECTION = 3; U["0B8  
public final static int SHELL = 4; h$5[04.Q  
public final static int QUICK = 5; U7WYS8  
public final static int IMPROVED_QUICK = 6; y[N0P0r l:  
public final static int MERGE = 7; )rEl{a  
public final static int IMPROVED_MERGE = 8;  kN=&"  
public final static int HEAP = 9; ,I"T9k-^  
!!\}-r^y%  
public static void sort(int[] data) { @}y.  
sort(data, IMPROVED_QUICK); HOx4FXPs  
} oq7G=8gTp  
private static String[] name={ 88HqP!m%P:  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" <::lfPP  
}; jG>W+lq  
Zn9tG:V  
private static Sort[] impl=new Sort[]{ 8-#kY}d.  
new InsertSort(), 3ijPm<wn  
new BubbleSort(), ^ ]9K>}  
new SelectionSort(), _}R9!R0O  
new ShellSort(), Vn5T Jw  
new QuickSort(), 7y$\|WG?!r  
new ImprovedQuickSort(), 0?54 8yH  
new MergeSort(), ?^VPO%  
new ImprovedMergeSort(), ZR1U&<0c@  
new HeapSort() FKO2UY#&7  
}; `D;*.zrA  
pGD@R=8  
public static String toString(int algorithm){ xMr,\r'+  
return name[algorithm-1]; g}MUfl-L  
} tWn dAM(U7  
~| j  eNT  
public static void sort(int[] data, int algorithm) { Q:b0M11QR  
impl[algorithm-1].sort(data); qfsPX6]  
} d+,!>.<3  
|Gic79b  
public static interface Sort { X['9;1Xr  
public void sort(int[] data); 6f +aGz  
} f<8Hvumw  
lcl|o3yQ  
public static void swap(int[] data, int i, int j) { y,5qY}P+  
int temp = data; wPg/.N9H  
data = data[j]; k[@P526  
data[j] = temp; ]k!Xb  
} '3S~QN  
} 7^><Vh"qV  
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