社区应用 最新帖子 精华区 社区服务 会员列表 统计排行 社区论坛任务 迷你宠物
  • 6801阅读
  • 0回复

[JAVA]用Java实现的各种排序

级别: 终身会员
发帖
3743
铜板
8
人品值
493
贡献值
9
交易币
0
好评度
3746
信誉值
0
金币
0
所在楼道
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。 hEdo,gF*  
插入排序: ZI#SYEF6  
j`LT`p"9S  
package org.rut.util.algorithm.support; dpc=yXg>"c  
K8Kz  
import org.rut.util.algorithm.SortUtil; a9mr-`<  
/** O"2wV +9  
* @author treeroot 2vW,.]95M  
* @since 2006-2-2 rRA_'t;uK  
* @version 1.0 ;GSfN  
*/ ~' PS|  
public class InsertSort implements SortUtil.Sort{ *;\ K5  
T$>=+U  
/* (non-Javadoc) hj#+8=  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) cwDD(j  
*/ 5 \.TZMB  
public void sort(int[] data) { JydQA_   
int temp; sDh6 Uk  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); *$WiJ3'(m  
} R&-W_v+  
} )}zA,FOA*  
} [{.\UkV@  
`5~o=g  
} FdK R{dX}  
&caO*R<#J}  
冒泡排序: .q;RNCUt  
,2:L{8_L  
package org.rut.util.algorithm.support; TTw~.x,  
!gA^$(=:"  
import org.rut.util.algorithm.SortUtil; -7A!2mRiz  
brhJ&|QDE  
/** D4x'  
* @author treeroot 0UAr}H.:  
* @since 2006-2-2 0ju wDd  
* @version 1.0 ?eg@ 7n  
*/ _o=`-iy9  
public class BubbleSort implements SortUtil.Sort{ G%x,t -  
y^Xxa'y  
/* (non-Javadoc) B'#gs'fl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) bKTwG@{/k  
*/ )F9%^a(  
public void sort(int[] data) { Vm5P@RU$w;  
int temp; =_~'G^`tu  
for(int i=0;i for(int j=data.length-1;j>i;j--){ )~o`QM+  
if(data[j] SortUtil.swap(data,j,j-1); 6T'43h. :  
} 7$!Bq#  
} ~'YSVx& )  
} #| e5  
} qi5>GX^t]b  
XajY'+DIsz  
} Z~R/ p;@  
/U Rj$ |  
选择排序: 9$w)_RX9W  
0eu$ oel-  
package org.rut.util.algorithm.support; MyR\_)P?  
ZI:d&~1i1  
import org.rut.util.algorithm.SortUtil; mjJlXA  
&I">{J<  
/** <zWQ[^  
* @author treeroot PYRwcJ$b\d  
* @since 2006-2-2 '{_tDboY  
* @version 1.0 bsS| !KT  
*/ ^K@ GK  
public class SelectionSort implements SortUtil.Sort { ?Pf ,5=*B  
D2mAyU -  
/* gA8 u E  
* (non-Javadoc) ^{,}, i  
* ="*C&wB^  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) TOP'Bmb  
*/ =$`")3y3  
public void sort(int[] data) { S%%qn  
int temp; +hYmL Sq  
for (int i = 0; i < data.length; i++) { FP cvkXQD  
int lowIndex = i; Ts *'f  
for (int j = data.length - 1; j > i; j--) { O4+w2'.,  
if (data[j] < data[lowIndex]) { R(#;yn  
lowIndex = j; P>cJ~F M  
} 2+rao2  
} 206jeH9  
SortUtil.swap(data,i,lowIndex); W`rE\P  
} ojI"<Q~g  
} T</gWW  
9d|7#)a;  
} w4/)r-Z4I  
tg4&j$  
Shell排序: lP &%5y;  
*8HxJ+[,[  
package org.rut.util.algorithm.support; !,WRXE&j  
%=>xzP(z  
import org.rut.util.algorithm.SortUtil; }Qu 7o  
Q^;\!$:M  
/** S`-IQ,*}  
* @author treeroot Icb;Yzt  
* @since 2006-2-2 `t"Kq+  
* @version 1.0 0|k[Wha#  
*/ ^@cX0_  
public class ShellSort implements SortUtil.Sort{ /R?uxhV  
*m/u3.\  
/* (non-Javadoc) Vi~+C@96  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) En%o7^W++  
*/  X0L{#U  
public void sort(int[] data) { $VNn`0^gF  
for(int i=data.length/2;i>2;i/=2){ 6XqO' G  
for(int j=0;j insertSort(data,j,i); zL}DLfy>R  
} k!rz8S"  
} <\ c8q3N  
insertSort(data,0,1); wYM{x!D  
} B*Xh$R  
!7|9r$  
/** G*V 7*KC  
* @param data h{9 pr  
* @param j #{PNdINoU  
* @param i 4\iQ%fb  
*/ }x-8@9S~z  
private void insertSort(int[] data, int start, int inc) { "=O)2}  
int temp; =2 5 "q Jr  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); OC.@C}u  
} ~d]7 Cl  
} &-tf/qJ  
} 0cVXUTJ|W  
c7 -j  
} n_Dhq(.  
4G2V{(@QiZ  
快速排序: 3._fbAN%e  
kdq55zTc<6  
package org.rut.util.algorithm.support; 6OUj c  
nz+KA\iW  
import org.rut.util.algorithm.SortUtil; )i>KgX  
; o=mL_[  
/** )k Uw,F=6  
* @author treeroot ^TGHWCK!t  
* @since 2006-2-2 1lM0pl6M  
* @version 1.0 J %t1T]y~  
*/ * bK@A2`  
public class QuickSort implements SortUtil.Sort{ b6ddXM\Z  
,\ i q'}i  
/* (non-Javadoc) fy eS )  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) dLq!t@?iu>  
*/ ;K!Or  
public void sort(int[] data) { hb{(r@[WHv  
quickSort(data,0,data.length-1); Pa*yo:U'h  
} zc#`qa:0  
private void quickSort(int[] data,int i,int j){ i`X{pEKP+  
int pivotIndex=(i+j)/2; p%_TbH3j`  
file://swap xN]bRr  
SortUtil.swap(data,pivotIndex,j); _rv_-n]"o  
~[{| s' )  
int k=partition(data,i-1,j,data[j]); ()Z$j,2  
SortUtil.swap(data,k,j); $A ,=z  
if((k-i)>1) quickSort(data,i,k-1); FpEdwzBb<  
if((j-k)>1) quickSort(data,k+1,j); >4c 1VEi  
_1 a2Z\  
} R;%iu0  
/** AMr9rBd  
* @param data sQkP@Y  
* @param i B4?P"|  
* @param j Z=xrj E  
* @return 2WoB;=  
*/ Wd7*sa3T  
private int partition(int[] data, int l, int r,int pivot) { n1ICW 9  
do{ -;v:. [o.  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); j'W)Nyw$[  
SortUtil.swap(data,l,r); A 6d+RAx  
} lyyi?/W%  
while(l SortUtil.swap(data,l,r); V\_ &2',t  
return l; ^6=nL<L  
} b#b#r  
jH8F^KJM[  
} /1Eg6hf9B  
sG3%~  
改进后的快速排序: ~HELMS~-  
}*%%GPJ  
package org.rut.util.algorithm.support; 0wx`y$~R  
YRK4l\_`  
import org.rut.util.algorithm.SortUtil; N;htKcZ  
iZ{D_uxq  
/** Mqq7;w@(J  
* @author treeroot lHx$F ?  
* @since 2006-2-2 &0 @2JS/!  
* @version 1.0 Zffzyh  
*/ ]8RcZn  
public class ImprovedQuickSort implements SortUtil.Sort { qZ4DO*%b3  
^P[-HA|  
private static int MAX_STACK_SIZE=4096; lOVsp#  
private static int THRESHOLD=10; .6r&<*  
/* (non-Javadoc) Mq$e5&/  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) _KKG^ u<  
*/ eOS#@6U=u  
public void sort(int[] data) { 'E6)6N  
int[] stack=new int[MAX_STACK_SIZE]; P! :D2zSH_  
gzeG5p  
int top=-1; &7;W=uF  
int pivot; 9'}m797I'  
int pivotIndex,l,r; 'l2`05   
5=l Ava#  
stack[++top]=0; ibEQ52  
stack[++top]=data.length-1; 0rF{"HM~  
xmbkn}@A  
while(top>0){ kFeuKSa^d  
int j=stack[top--]; !}U&%2<69  
int i=stack[top--]; [gU z9iU  
3HWI;  
pivotIndex=(i+j)/2; ]GRPxh  
pivot=data[pivotIndex]; w J; y4  
Wa ,  #  
SortUtil.swap(data,pivotIndex,j); e)O6k7U$  
!x[ +rf  
file://partition {,,w5/k^  
l=i-1; ._#|h5  
r=j; 7n5 bI\  
do{ D.X%wJ8  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); c/b} 39X  
SortUtil.swap(data,l,r); VDBP]LRF  
} jrG@ +" }  
while(l SortUtil.swap(data,l,r); >{V]q*[/;Q  
SortUtil.swap(data,l,j); RaKL KZn  
d.sxB}_O  
if((l-i)>THRESHOLD){ qpFFvZ W  
stack[++top]=i; os"o0?  
stack[++top]=l-1; [ q22?kT  
} T-uI CMEf  
if((j-l)>THRESHOLD){  weKwBw  
stack[++top]=l+1; uee2WGD  
stack[++top]=j; XzkC ]e'  
} (Jy7  
zq8LQ4@ay  
} Kb#py6  
file://new InsertSort().sort(data); )lE]DG!  
insertSort(data); 6l<q  
} hVd% jU:  
/** "xi)GH]H_  
* @param data Quqts(Q)+  
*/ 8 W79  
private void insertSort(int[] data) { ^g"G1,[%w  
int temp; QQj)"XJ29  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); k7'_  
} =bi:<%"  
} GFB(c  
} !X*+Ct^  
 mR)Xq=  
} AQw1,tGV  
D37N*9}  
归并排序: _8v8qT}O~4  
c_"]AhV~Mg  
package org.rut.util.algorithm.support; ~xer ZQgc  
5B< em  
import org.rut.util.algorithm.SortUtil; bH%k)  
9nN$%(EO5;  
/** J^m#984  
* @author treeroot ph qx<N@  
* @since 2006-2-2 &Op_!]8`U  
* @version 1.0 [+\=x[q  
*/ 7o_1PwKS6  
public class MergeSort implements SortUtil.Sort{ fkbHfBp[(A  
&@p_g8r#  
/* (non-Javadoc) DO` K_B  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) hd0d gc  
*/ SVB> 1s9F  
public void sort(int[] data) { V3r1|{Z(  
int[] temp=new int[data.length]; c5C 2xE}T  
mergeSort(data,temp,0,data.length-1); z~fZg6  
} FOV%\=Hl  
pBl'SQccp  
private void mergeSort(int[] data,int[] temp,int l,int r){ ,j E'd'$  
int mid=(l+r)/2; xMsSZ{j%5  
if(l==r) return ; oM\b>*  
mergeSort(data,temp,l,mid); Jmg<mjq/G  
mergeSort(data,temp,mid+1,r); *'[8FZ|dQ  
for(int i=l;i<=r;i++){ +}1h  
temp=data; O =m_P}K  
} p)2 !_0  
int i1=l; *9T a0e*  
int i2=mid+1; qw?#~"Ca.  
for(int cur=l;cur<=r;cur++){ Ya~*e;CW2  
if(i1==mid+1)  t~_vzG  
data[cur]=temp[i2++]; n@%Q 2_  
else if(i2>r) Uao8#<CkvJ  
data[cur]=temp[i1++]; X?'ShXI  
else if(temp[i1] data[cur]=temp[i1++]; 8G3CQ]G  
else K!~j}z*  
data[cur]=temp[i2++]; ]6s7?07m4  
} 8k[=$Ro  
} 5\!t!FL_  
"- 2HKs  
} 8`g@ )]Iy  
R%Xhdcn7  
改进后的归并排序: -%f$$7  
j}s<Pn%4  
package org.rut.util.algorithm.support; ]cQYSN7!SY  
G42J  
import org.rut.util.algorithm.SortUtil; py|ORVN(Z  
X 8/9x-E_  
/** ??5y0I6+  
* @author treeroot a%nksuP3  
* @since 2006-2-2 dlv1liSXL5  
* @version 1.0 Q' b@5o  
*/ )\aCeY8o  
public class ImprovedMergeSort implements SortUtil.Sort { 6&9}M Oc  
E^s<5BC;  
private static final int THRESHOLD = 10; Kx4_`;>  
OkNBP 0e}  
/* U~CG(9  
* (non-Javadoc) mv,p*0  
* jK(]e iR$S  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ]#NJ[IZb  
*/ p[LPi5  
public void sort(int[] data) { !#[B#DZc(  
int[] temp=new int[data.length]; I@/s&$H`l  
mergeSort(data,temp,0,data.length-1); f[ 'uka.U  
} |7# S0Ca@  
q 3nF\Me0  
private void mergeSort(int[] data, int[] temp, int l, int r) { C<B+!16  
int i, j, k; w. c]   
int mid = (l + r) / 2; ?y/LMja  
if (l == r) DS| HN  
return; [,a2A  
if ((mid - l) >= THRESHOLD) R3bHX%T  
mergeSort(data, temp, l, mid); q?##S'  
else bC h  
insertSort(data, l, mid - l + 1); <rn26Gfr  
if ((r - mid) > THRESHOLD) CT0 ~  
mergeSort(data, temp, mid + 1, r); vT=?UTq  
else KD=W(\  
insertSort(data, mid + 1, r - mid); /^pPT6  
.,*68S0k7  
for (i = l; i <= mid; i++) { S x0QPX  
temp = data; qP5'&!s&!  
} &;2@*#,  
for (j = 1; j <= r - mid; j++) { yx\I&\i  
temp[r - j + 1] = data[j + mid]; y# iQ   
} elDt!9Pu  
int a = temp[l]; b haYbiX?  
int b = temp[r]; 78UE?) X"  
for (i = l, j = r, k = l; k <= r; k++) { @b3jO  
if (a < b) { b[Qe} `W  
data[k] = temp[i++]; %] #XIr  
a = temp; o,gH*  
} else { |r<#>~*  
data[k] = temp[j--]; G$oi>zt3  
b = temp[j]; }UzRFIcv  
} \r`><d  
} vrX@T ?>  
} &|YJ?},  
cVf}8qf)  
/** HP(dhsd<c  
* @param data hM "6-60  
* @param l zI{~;`tzN  
* @param i E (-@F%Q  
*/ UAEu.AT  
private void insertSort(int[] data, int start, int len) { Ba#wW E  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); :lE_hY  
} VdOcKP.  
} hF^y4v|5  
} BN%;AQV  
} l|j}Ggen  
%U?1Gf e  
堆排序: @;t6Slc"~  
;"w?@ELE  
package org.rut.util.algorithm.support; 0WI@BSHnM  
(~N[j;W,_W  
import org.rut.util.algorithm.SortUtil; W|CZA  
C @nA*  
/** ^_c6Op<F  
* @author treeroot yvIzgwN%s!  
* @since 2006-2-2 UUR+PfY  
* @version 1.0 wCgi@\  
*/ +x]3 - s  
public class HeapSort implements SortUtil.Sort{ .D{He9  
o2rL&  
/* (non-Javadoc) d#1yVdqRl  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) sd&^lpH  
*/ KdXqW0nm  
public void sort(int[] data) { N~|Z@pU"  
MaxHeap h=new MaxHeap(); {1;R&  
h.init(data);  `6xr:s  
for(int i=0;i h.remove(); G\(cnqHk  
System.arraycopy(h.queue,1,data,0,data.length); BcxALRWE  
} b_Dd$NC  
e+<'=_x {  
private static class MaxHeap{ <j}A=SDZ)  
W<u,S  
void init(int[] data){ d1';d6.u\  
this.queue=new int[data.length+1]; YkSHJ{ >  
for(int i=0;i queue[++size]=data; Q<>b3X>O  
fixUp(size); l i) 5o  
} 5m2f\^U  
} W1_.wN$,5  
Zo< j"FG  
private int size=0; xmi@ XL@t  
4'5|YGQj  
private int[] queue; <,*3Av  
Z;y(D_;_  
public int get() { $38)_{  
return queue[1]; L;-V Yo#  
} qLV3Y?S!L  
IU;a$  
public void remove() { G8&/I c  
SortUtil.swap(queue,1,size--); s_}`TejK  
fixDown(1); ' eh }t  
} .(99f#2M:  
file://fixdown qTSe_Re  
private void fixDown(int k) {  {H*  
int j; tb4^+&.GS  
while ((j = k << 1) <= size) { [ 2PPa9F  
if (j < size %26amp;%26amp; queue[j] j++; Ab6R ?mUM  
if (queue[k]>queue[j]) file://不用交换 82iFk`)T  
break; U$ 46=F|  
SortUtil.swap(queue,j,k); E=Vp%08(  
k = j; [RF6mWQ  
} k [LV^oEg  
} 7,zE?KG /  
private void fixUp(int k) { ~=Q^ ]y,  
while (k > 1) { [ eb k u_  
int j = k >> 1; 2u$rloc$b  
if (queue[j]>queue[k]) &M:o(T  
break; aS``fE ;O  
SortUtil.swap(queue,j,k); ~1{ppc+  
k = j; 7"F29\  
} 3W%j^nM  
} w+wtr[;wwL  
I1 Otu~%d  
} fW[ .Q0  
!ewT#afyu(  
} 5+Ao.3Xn  
0*_E'0L8e  
SortUtil: )KEW`BC5T  
&isKU 8n  
package org.rut.util.algorithm; ,Ha<lU2K  
f!#+cM  
import org.rut.util.algorithm.support.BubbleSort; :yRv:`r3Lt  
import org.rut.util.algorithm.support.HeapSort; =^SxZ Bn  
import org.rut.util.algorithm.support.ImprovedMergeSort; S+#|j  
import org.rut.util.algorithm.support.ImprovedQuickSort; (k8}9[3G  
import org.rut.util.algorithm.support.InsertSort; Z #T  
import org.rut.util.algorithm.support.MergeSort; 3)OQgeKU  
import org.rut.util.algorithm.support.QuickSort; ]x{.qTtw  
import org.rut.util.algorithm.support.SelectionSort; ({Pjz;xM  
import org.rut.util.algorithm.support.ShellSort; <# RVA{  
x FWhr#5,  
/** Svb>s|D  
* @author treeroot gq"d$Xh$x7  
* @since 2006-2-2 #y[U2s Se  
* @version 1.0 !-.GfI:q  
*/ {0 j_.XZ  
public class SortUtil { O=;jDWE  
public final static int INSERT = 1; @Ns[qn;9  
public final static int BUBBLE = 2; Zazff@O *  
public final static int SELECTION = 3; 7Y R|6{@  
public final static int SHELL = 4; n_3 R Q6  
public final static int QUICK = 5; DzQ  
public final static int IMPROVED_QUICK = 6; &w#!   
public final static int MERGE = 7; o<G#%9j  
public final static int IMPROVED_MERGE = 8; 4l+!Z,b  
public final static int HEAP = 9; NcP/W>lN  
'3Lu_]I-  
public static void sort(int[] data) { 5nUJ9sqA  
sort(data, IMPROVED_QUICK); >mai v;  
} h693TS_N  
private static String[] name={ Qr9;CVW  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" 6,a H[ >W  
}; xH xTL>,?  
fEX=csZ86  
private static Sort[] impl=new Sort[]{ ])o{!}QUl\  
new InsertSort(), aL( hWE  
new BubbleSort(), QYboX~g~p  
new SelectionSort(), 0z8?6~M;<  
new ShellSort(), w y|^=#k  
new QuickSort(), 8HQ.MXKP  
new ImprovedQuickSort(), PDuc;RG  
new MergeSort(), )63 $,y-;$  
new ImprovedMergeSort(), t/\   
new HeapSort() @M]_],  
}; 80Dn!9j*  
MQQm3VaKS  
public static String toString(int algorithm){ Lr:Qc#2  
return name[algorithm-1]; yGdX>h  
} h 6Z:+  
MLu!8dgI  
public static void sort(int[] data, int algorithm) { G aV&y  
impl[algorithm-1].sort(data); ;:fW]5"R  
} -GA F>  
(-21h0N[V  
public static interface Sort { TI4Hu,rc  
public void sort(int[] data); x#J9GP.  
} #$I@V4O;#  
->8Kd1^F  
public static void swap(int[] data, int i, int j) { P.'.KZJ:WD  
int temp = data; mb1mlsE  
data = data[j]; GtVT^u_   
data[j] = temp; m&:&z7^p  
} Aqmpo3P[+  
} v;x0=I&%  
评价一下你浏览此帖子的感受

精彩

感动

搞笑

开心

愤怒

无聊

灌水
描述
快速回复

您目前还是游客,请 登录注册
如果您提交过一次失败了,可以用”恢复数据”来恢复帖子内容
认证码:
验证问题:
3+5=?,请输入中文答案:八 正确答案:八