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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。 5L4{8X0X8  
插入排序: Vyqj)1Z8>  
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package org.rut.util.algorithm.support;  iFy_ D  
o1 kY|cnGH  
import org.rut.util.algorithm.SortUtil; u 6(O;  
/** a.yCd/  
* @author treeroot z.q^`01/H  
* @since 2006-2-2 %`[Oz[V  
* @version 1.0 &6`h%;a/&  
*/ i/%+x-#  
public class InsertSort implements SortUtil.Sort{  bK|I  
A+&^As2  
/* (non-Javadoc) wjm_bEi  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) W5^m[,GU'  
*/ V6C*d:  
public void sort(int[] data) { .A. VOf_  
int temp; dyz)22{\!`  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); V9 dRn2- [  
} n5~7x   
} ;ctJ9"_g  
} '*~_!lE5  
? %9-5"U[  
} O#g'4 S  
 M[^  
冒泡排序: ,u1Yn}  
;p !|E3o.  
package org.rut.util.algorithm.support; i*We kr3Wo  
/7 CF f&4  
import org.rut.util.algorithm.SortUtil; NT6OGBl&  
wsnR$FhQ`  
/** H <|ilL'fX  
* @author treeroot 0GtL6M@pP  
* @since 2006-2-2 \<}4D\qz  
* @version 1.0 pu:Ie#xTDf  
*/ Vy:I[@6@+  
public class BubbleSort implements SortUtil.Sort{ M?i U$qI  
=r3%jWH6  
/* (non-Javadoc) a5/6DK>  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) OO Hw-MW  
*/ mIK-a{?G  
public void sort(int[] data) { F%t_9S,)O  
int temp; Df\~ ZWs!  
for(int i=0;i for(int j=data.length-1;j>i;j--){ J|9kWjOf+i  
if(data[j] SortUtil.swap(data,j,j-1); 8!~8:?6n  
} L9|55z  
} _.9):i2<SF  
} \>T+\?M  
} </UUvMf"  
-|ho 8alF  
} yJCqP=  
%V,2,NCd  
选择排序: 1G0U}-6RH  
,N[N;Uoj  
package org.rut.util.algorithm.support; qqL :#]lV5  
yqEX0|V%  
import org.rut.util.algorithm.SortUtil; 6zo'w Wc3  
ewo]-BQS  
/** k$u\\`i]oC  
* @author treeroot ?ztI8 I/  
* @since 2006-2-2 7# ~v<M6  
* @version 1.0 ae1?8man  
*/ _"*vj-{-y  
public class SelectionSort implements SortUtil.Sort { [Zdrm:=]L  
tF[) Y#  
/* &fRz6Hd  
* (non-Javadoc) x7B;\D#`i/  
* ebEI%8p g  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) "T[BSj?E  
*/ (Jb#'(~a  
public void sort(int[] data) { zw'%n+5m  
int temp; o(}%b8 K  
for (int i = 0; i < data.length; i++) { BN&)5M?Xt6  
int lowIndex = i; N_Ezp68Fp  
for (int j = data.length - 1; j > i; j--) { ai d1eF  
if (data[j] < data[lowIndex]) { =XYc2. t  
lowIndex = j; #P!<u Lc%  
} P,zQl;  
} V~jp  
SortUtil.swap(data,i,lowIndex); 0"j:-1  
} |L*=\%t8  
} #Fo#f<b p  
6wT ])84  
} S~r75] "  
.~ uKr^%  
Shell排序: =x?WZMO  
+<$nZ=,hsy  
package org.rut.util.algorithm.support; Bi9Q8#lh  
`3? HQ2n  
import org.rut.util.algorithm.SortUtil; wIAH,3!  
%yc-D]P/  
/** b IxH0=f  
* @author treeroot H9'psv  
* @since 2006-2-2 ~u!V_su]GY  
* @version 1.0 o%-KO? YW  
*/ 2aR9vmR  
public class ShellSort implements SortUtil.Sort{ rF}Q(<Y86  
izcjI.3e,  
/* (non-Javadoc) ,gpEXU p\  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) AMB{Fssz  
*/ gT+wn-3  
public void sort(int[] data) { cjhwJ"`H  
for(int i=data.length/2;i>2;i/=2){ zC:Pg4=w]  
for(int j=0;j insertSort(data,j,i);  96;5  
} Q3hSWXq'  
} `e;r$Vpd_  
insertSort(data,0,1); rS!@AgPLE  
} f tl$P[T  
e*`ht+  
/** @J>JZ7m]\  
* @param data 5~UW=   
* @param j n(V{ [  
* @param i x R$T/]/  
*/ 78*8-  
private void insertSort(int[] data, int start, int inc) { 4P5^.\.  
int temp; ,?jc0L.'r]  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); jPo,mz&^  
} Ri AMW|M"C  
} dPpJDY0  
} &RbP N^  
)l! /7WKY  
} /zXOta G  
dg~lz80  
快速排序: 8PVjNS/  
qAd=i0{N  
package org.rut.util.algorithm.support; y]PuY \+  
21Dc.t{  
import org.rut.util.algorithm.SortUtil; >r\GB#\5  
nql9SQ'\\  
/** j[R.UB3J  
* @author treeroot 4sO Rp^t'Q  
* @since 2006-2-2 a6;[Z  
* @version 1.0 |,=^P` #%  
*/ o o'7  
public class QuickSort implements SortUtil.Sort{ 479X5Cl  
ia_@fQ  
/* (non-Javadoc) ~4=*kJ#7  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) aaKf4}  
*/ &b^~0Z  
public void sort(int[] data) { {Ak 4GL  
quickSort(data,0,data.length-1); %x{kd8>u!  
} 9M($_2,44  
private void quickSort(int[] data,int i,int j){ J;^PM:6  
int pivotIndex=(i+j)/2; *U%3 [6hm  
file://swap [[^95:  
SortUtil.swap(data,pivotIndex,j); g"|>^90  
K,! V _  
int k=partition(data,i-1,j,data[j]); u_+iH$zA  
SortUtil.swap(data,k,j); U+>M@!=  
if((k-i)>1) quickSort(data,i,k-1); ,m]5j_< }  
if((j-k)>1) quickSort(data,k+1,j); w< Xwz`O  
vC@^B)5gb  
} lqMr@ :t  
/** \5!7zPc  
* @param data bFajK;  
* @param i ;>5`Y8s6  
* @param j =+wd"Bu  
* @return *IWW,@0  
*/ ihwJBN>(  
private int partition(int[] data, int l, int r,int pivot) {  &qdhxc4  
do{ N2'aC} I  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); ZfqN4  
SortUtil.swap(data,l,r); 7p2xst  
} @>VVB{1@,]  
while(l SortUtil.swap(data,l,r); MaHP):~  
return l; ^5Lk}<utw  
} R Qo a  
mrnPZf i  
} |]@Pq[Hn|  
4L8hn4F  
改进后的快速排序: !*"fWahv  
HrsG^x  
package org.rut.util.algorithm.support; : (X3?%  
r <5}& B`  
import org.rut.util.algorithm.SortUtil; 0]  
kq5X<'MM9N  
/** 1,;X4/*  
* @author treeroot v '+]T=  
* @since 2006-2-2 }}tbOD)t  
* @version 1.0 7LVG0A2>7  
*/ xH*X5?  
public class ImprovedQuickSort implements SortUtil.Sort { lh"*$.j-  
1\&j)3mC  
private static int MAX_STACK_SIZE=4096; <R@,wzK  
private static int THRESHOLD=10; \/Mx|7<  
/* (non-Javadoc) rjK`t_(=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 6ABK)m-y  
*/ h.PBe  
public void sort(int[] data) { s||" } l  
int[] stack=new int[MAX_STACK_SIZE]; pzz* >Y  
OA[e}Vn  
int top=-1; @ps(3~?7  
int pivot; 'q)g, 2B%  
int pivotIndex,l,r; \4>,L_O  
~bhS$*t64  
stack[++top]=0; z6Ob X  
stack[++top]=data.length-1; 3J+2#ML  
^E.L8  
while(top>0){ (6S'wb  
int j=stack[top--]; 9VnBNuT  
int i=stack[top--]; $QC1l@[sM  
f 5v&4  
pivotIndex=(i+j)/2; $mn0I69  
pivot=data[pivotIndex]; + t5SrO!`  
;ItH2Lw<&  
SortUtil.swap(data,pivotIndex,j); xmvE*q"9]  
Mu? |<#s  
file://partition 8D*nU3O   
l=i-1; E&P2E3P  
r=j; -d\sKc  
do{ i3,IEN  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); =:^aBN#  
SortUtil.swap(data,l,r); @x}"aJgl  
} i7Up AHd/  
while(l SortUtil.swap(data,l,r); 43PLURay  
SortUtil.swap(data,l,j);  yfZNL?2x  
ef7{D P  
if((l-i)>THRESHOLD){ R c+olJ^5  
stack[++top]=i; C!VhVOy>d  
stack[++top]=l-1; _p-e)J$7  
} cq4~(PXT g  
if((j-l)>THRESHOLD){ I,{YxY[$7  
stack[++top]=l+1; $a M5jH<  
stack[++top]=j; \Oeo"|  
} Ek_5% n  
E~%n-A  
} X7},|cmD_  
file://new InsertSort().sort(data); ,CfslhO{j  
insertSort(data); .<"XE7  
} @NLcO}  
/** q!$s<n  
* @param data e&}W#  
*/ yQK{ +w  
private void insertSort(int[] data) { Y[{:?i~9,  
int temp; 7IX8ck[D  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); nkW})LyB\  
} 7~Y\qJ4b  
} .kT]^rv ;  
} -s3`mc}*  
Q(bOar5  
} pU$k{^'UK  
paqGW]  
归并排序: @J[@Pu O  
F]\ Sk'}&  
package org.rut.util.algorithm.support; :o s8"  
Mog >W&U  
import org.rut.util.algorithm.SortUtil; mUBy*.  
=;Gq:mHi  
/** a:BW*Hy{\  
* @author treeroot 0#*6:{/^  
* @since 2006-2-2  {^N,=m\  
* @version 1.0 }"D;?$R!  
*/ "q=Cye  
public class MergeSort implements SortUtil.Sort{ $*#a;w7\C  
wQhNQ(H~\  
/* (non-Javadoc) daE.y_9y  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) [o)K1>>7  
*/ 7he73  
public void sort(int[] data) { I!lDKS,b  
int[] temp=new int[data.length]; Tagf7tw4  
mergeSort(data,temp,0,data.length-1); TeHJj`rdAU  
} EXDDUqZ5\  
B7%K}|Qg  
private void mergeSort(int[] data,int[] temp,int l,int r){ qSY\a\.<  
int mid=(l+r)/2; &6eo;8 `U  
if(l==r) return ; z`{sD]  
mergeSort(data,temp,l,mid); 2bt>t[0ad  
mergeSort(data,temp,mid+1,r); [LYO'-g^F#  
for(int i=l;i<=r;i++){ U=Ps#  
temp=data; =:H-9  
} =U]9>  
int i1=l; CTIS}_CWd=  
int i2=mid+1; LV:L0D7y  
for(int cur=l;cur<=r;cur++){ q0.!T0i  
if(i1==mid+1) ;_<~9;  
data[cur]=temp[i2++]; tOIqX0dWd  
else if(i2>r) Qit&cnO  
data[cur]=temp[i1++]; _.5{vGyxr  
else if(temp[i1] data[cur]=temp[i1++]; H*=cw<  
else G6G Bqp6|  
data[cur]=temp[i2++]; Rl?1|$%  
} %2QGbnt_*  
} :?M_U;;z2+  
<ToS&  
} !0;AFv`\  
m{IlRf'  
改进后的归并排序: ~+Wx\:TT  
;K<VT\  
package org.rut.util.algorithm.support; K=gg<E<  
f_~T  
import org.rut.util.algorithm.SortUtil; TU|#Pz7n-Z  
+~8Lc'0aA  
/** g}_2T\$k  
* @author treeroot ]IuZT  
* @since 2006-2-2 1eI*.pt  
* @version 1.0 zluq2r  
*/ 4|x _C-@  
public class ImprovedMergeSort implements SortUtil.Sort {  /YJo"\7  
2S8;=x}/  
private static final int THRESHOLD = 10; a\P:jgF  
W@R7CQE@  
/* |"*P`C=  
* (non-Javadoc) $ve$Sq  
* F`(;@LO  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) '73}{" '  
*/ !Icznou\  
public void sort(int[] data) { fl9VokAT  
int[] temp=new int[data.length]; Otq1CD9  
mergeSort(data,temp,0,data.length-1); aj .7t =^  
} 4oryTckS  
T \- x3i  
private void mergeSort(int[] data, int[] temp, int l, int r) { QkD]9#Id&  
int i, j, k; N=T}  
int mid = (l + r) / 2; v UO[V$rx  
if (l == r) }2m>S6""A  
return; 8f)pf$v`   
if ((mid - l) >= THRESHOLD) Le bc @,  
mergeSort(data, temp, l, mid); ; qbK[3.  
else (. YSs   
insertSort(data, l, mid - l + 1); _nxu8g]  
if ((r - mid) > THRESHOLD) xt "-Jmox  
mergeSort(data, temp, mid + 1, r); QLHEzEvf{/  
else iCh 8e>+  
insertSort(data, mid + 1, r - mid); O<,\ tZ'N  
y\-iGKz{0  
for (i = l; i <= mid; i++) { Ik5V?  
temp = data; zzo93d  
} `Je1$)%  
for (j = 1; j <= r - mid; j++) { S<'_{uz  
temp[r - j + 1] = data[j + mid]; ;XjXv'  
} `r3 klL,W'  
int a = temp[l]; R~[~(`/S  
int b = temp[r]; JgKhrDx  
for (i = l, j = r, k = l; k <= r; k++) { S0:Oep   
if (a < b) { 2P@6Qe ?  
data[k] = temp[i++]; ,mi7WW9  
a = temp; VGxab;#,:3  
} else { cwtlOg  
data[k] = temp[j--]; `T7TWv"M  
b = temp[j]; L{)t(H>O  
} o.Y6(o  
} =ePX^J*M'  
} wxPl[)E  
\*b  .f  
/** '!?t+L%gO  
* @param data /7p(%vr  
* @param l xWK/uE(  
* @param i 9Hb|$/FD  
*/ |4 2;171  
private void insertSort(int[] data, int start, int len) { Q{'4,J-w  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); _JTK$ \  
} } snS~kx  
} ]SPuNBsy)  
} h7TkMt[l  
} JhTr{8{  
)8aHj4x  
堆排序: -%%Xx5D  
W+U0Y,N6  
package org.rut.util.algorithm.support; s3Zt)xQ3  
e"bzZ!c&~V  
import org.rut.util.algorithm.SortUtil; B)L0hi  
*_#2|96)  
/** [uHC AP  
* @author treeroot =2QP7W3mg<  
* @since 2006-2-2  &.s.g\  
* @version 1.0 BOcD?rrZ0  
*/ 3RvDX p  
public class HeapSort implements SortUtil.Sort{ +TaxH;  
U:3O E97  
/* (non-Javadoc) PUZcb+%]h  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) +r;t]  
*/ =2=rPZw9  
public void sort(int[] data) { Kz/,V6H:  
MaxHeap h=new MaxHeap(); K{`R`SXD  
h.init(data); }S?"mg& V  
for(int i=0;i h.remove(); qz3 Z'  
System.arraycopy(h.queue,1,data,0,data.length); ,c?( |tF  
} zn&ZXFgN  
LW.j)wB]  
private static class MaxHeap{ /je $+  
 zy"k b  
void init(int[] data){ .`*]nN{  
this.queue=new int[data.length+1]; aT}Hc5L,b  
for(int i=0;i queue[++size]=data; @H4]Gp ]  
fixUp(size); yFb"2  
} -LUZ7,!/>o  
} } S]!W\a  
\-[bU6\A\  
private int size=0; W}3%BWn  
hxM{}}.E  
private int[] queue; B&B:P  
^dhx/e%s  
public int get() { x0ipk}  
return queue[1]; p}pd&ut1  
} A s}L=2  
y?O-h1"3,  
public void remove() { U!uJ)mm  
SortUtil.swap(queue,1,size--); "!AtS  
fixDown(1); !uIY,  
} $%"hhju  
file://fixdown cb0rkmO  
private void fixDown(int k) { +75"Q:I  
int j; ^0}wmxDq  
while ((j = k << 1) <= size) { 0#8, (6  
if (j < size %26amp;%26amp; queue[j] j++; a:UkVK]MP  
if (queue[k]>queue[j]) file://不用交换 ^p9V5o  
break; )[ZXPD  
SortUtil.swap(queue,j,k); p_&B+ <z  
k = j; rCczQ71W  
} ]u$tKC  
} MD<x{7O12>  
private void fixUp(int k) { U!c+i#:t  
while (k > 1) { <\Y(+?+uZ  
int j = k >> 1; >Ovz;  
if (queue[j]>queue[k]) ^AJ 2Y_}v  
break; }s@IQay+  
SortUtil.swap(queue,j,k); ?6&G:Uz/  
k = j; I(7iD. ^:  
} p!=8Pq.  
} ;}U]^LT=  
xZ`vcS(  
} HpIi-Es7C  
':_gYA  
} Yu_ eCq5/  
JBJ?|}5k4c  
SortUtil: G;u~H<  
U_gkO;s%  
package org.rut.util.algorithm; =EA @  
rKslgZhQ  
import org.rut.util.algorithm.support.BubbleSort; Cu24xP`  
import org.rut.util.algorithm.support.HeapSort; dnwzf=+>e  
import org.rut.util.algorithm.support.ImprovedMergeSort; OGJrwl  
import org.rut.util.algorithm.support.ImprovedQuickSort; 2W_[|.;'  
import org.rut.util.algorithm.support.InsertSort; Q#ksf h!D  
import org.rut.util.algorithm.support.MergeSort; ps,Kj3^T<  
import org.rut.util.algorithm.support.QuickSort; k{F6WQ7  
import org.rut.util.algorithm.support.SelectionSort; i>CR{q  
import org.rut.util.algorithm.support.ShellSort; sg}<()  
1EQ:@1  
/** <zvtQ^{]  
* @author treeroot s91[DT4  
* @since 2006-2-2 t5K#nRd Z:  
* @version 1.0 vShB26b  
*/ A=|a!N/  
public class SortUtil { $t"QLsk0  
public final static int INSERT = 1; x$TL j  
public final static int BUBBLE = 2; d$+0 ;D4E  
public final static int SELECTION = 3; 3PRU  
public final static int SHELL = 4; ~-lUS0duh  
public final static int QUICK = 5; AU%Yr 6  
public final static int IMPROVED_QUICK = 6; 'w72i/  
public final static int MERGE = 7; o(l%k},a  
public final static int IMPROVED_MERGE = 8; P~:^bU^F7  
public final static int HEAP = 9; $J)`Ru6.  
yW7>5r  
public static void sort(int[] data) { ,d_rK\J  
sort(data, IMPROVED_QUICK); gjnEN1T22  
} 4K`b?{){+a  
private static String[] name={ eUCBQK  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" Th\T$T`X$  
}; iRG6Cw2  
4A(h'(^7A  
private static Sort[] impl=new Sort[]{ i-4L{T\K  
new InsertSort(), hDUU_.q)D  
new BubbleSort(), -:45Q{u/  
new SelectionSort(), ?^7X2 u$nm  
new ShellSort(), |)%H_TXTy  
new QuickSort(), 0 .T5% _ /  
new ImprovedQuickSort(), .Sa=VC?EZ  
new MergeSort(), S-Vxlku]  
new ImprovedMergeSort(), y>u |3:z  
new HeapSort() ' \>k7?@  
}; x.|sCqx  
eUR+j?5I  
public static String toString(int algorithm){ })(robBkA  
return name[algorithm-1]; t*Z5{   
} "66#F  
gy|o#&e]%  
public static void sort(int[] data, int algorithm) { +`B^D  
impl[algorithm-1].sort(data); !SGRK01  
} DOkuT/+  
$X\2h+ Os  
public static interface Sort { NzM,0q  
public void sort(int[] data); yqtHlz%  
} Jx`7W1%T  
2* T Ir  
public static void swap(int[] data, int i, int j) { 6jm/y@|F!  
int temp = data; P;'ZdZ(SLu  
data = data[j]; tBl (E  
data[j] = temp; uocFOlU0n  
} [fvjvN`  
} e6{E(=R[M  
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