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
  • 9087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。 Q5Yy \M  
插入排序: ygI81\ D  
rFn%e  
package org.rut.util.algorithm.support; Z8mSm[w  
DNTkv_S  
import org.rut.util.algorithm.SortUtil; pAK7V;sJ  
/** $U . >]i  
* @author treeroot 9rD6."G  
* @since 2006-2-2 3X|7 R  
* @version 1.0 XL=Y~7b  
*/ f[r?J/;P9  
public class InsertSort implements SortUtil.Sort{ F/8="dM  
I'sq0^  
/* (non-Javadoc) `eZ +Pf".  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) -!_\4  
*/ 1=o|[7  
public void sort(int[] data) { m 0jm$> :Z  
int temp; ''. P=  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); Q#gzk%jL@  
} '2LK(uaU  
} 0 $Ygt0d  
} &ZyZmB  
8nV#\J9  
}  x&^>|'H  
pk>p|q  
冒泡排序: EuH[G_5e0  
MawWgd*  
package org.rut.util.algorithm.support; vH[G#A~4  
s}1S6*Cr  
import org.rut.util.algorithm.SortUtil; [B0]%!hFw  
[l`_2{:  
/** #k}x} rn<'  
* @author treeroot 6I8A[   
* @since 2006-2-2 y"bSn5B[  
* @version 1.0 _U Q|I|V#  
*/ "K Or)QD/  
public class BubbleSort implements SortUtil.Sort{ S{uKm1a  
&Y `V A  
/* (non-Javadoc) H]I^?+)9  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) <q}w,XU  
*/ PJ$C$G  
public void sort(int[] data) { !\'NBq,  
int temp; #saK8; tp  
for(int i=0;i for(int j=data.length-1;j>i;j--){ ='rSB.$Ctk  
if(data[j] SortUtil.swap(data,j,j-1); 7A,QA5G ]C  
} >0XB7sC  
} U-]Rm}X\M  
} 9sQ #v-+Yx  
} n PAl8  
?@@BIg-  
} DA9-F  
At t~N TL  
选择排序: QXaE2}}P  
th :I31  
package org.rut.util.algorithm.support; n7A %y2  
{.r jp`39  
import org.rut.util.algorithm.SortUtil; [c`u   
?=^~(x?S  
/** B)L=)N  
* @author treeroot &gv{LJd5b  
* @since 2006-2-2 %)t9b@c!}  
* @version 1.0 Q:v9C ^7  
*/ NT1"?Thx|  
public class SelectionSort implements SortUtil.Sort { {p90   
*X%dg$VcV  
/* bjq+x:>  
* (non-Javadoc) _x'?igy  
* U@'F9UB`  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) 3oo Tn-`{  
*/ i!nPiac  
public void sort(int[] data) { Le?yzf  
int temp; +t8{aaV  
for (int i = 0; i < data.length; i++) { pBR9)T\ n  
int lowIndex = i; dv7IHUFf  
for (int j = data.length - 1; j > i; j--) { C@P4}X0,=  
if (data[j] < data[lowIndex]) { H?H(=  
lowIndex = j; bP+b~!3  
} ;$FpxurX  
} hQFF%xl  
SortUtil.swap(data,i,lowIndex); q@+#CUa&n  
} cUDo}Yu  
} rzk-_AFR  
l)P~#G+C  
} [t{ed)J  
#"PRsMUw  
Shell排序: r5s$#,O/&Q  
l2.L h<G  
package org.rut.util.algorithm.support; Vi:<W0:  
)a;ou>u  
import org.rut.util.algorithm.SortUtil; vR*TW   
sM  _m  
/** CS\ E]f  
* @author treeroot #q-7#pp  
* @since 2006-2-2 A}h`%b  
* @version 1.0 -~HyzX\cZB  
*/ bMjE@S&  
public class ShellSort implements SortUtil.Sort{ ajJ+Jn\  
FV];od&c  
/* (non-Javadoc) F Cp\w1+  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) wJ}9(>id*  
*/ m Bc2x8g)  
public void sort(int[] data) { dH[TnqJn  
for(int i=data.length/2;i>2;i/=2){ B098/`r  
for(int j=0;j insertSort(data,j,i); %fzZpd]v=,  
} D,( "3zx  
} %J b/HWC[  
insertSort(data,0,1); Wf>P[6  
} O\z]1`i*o  
wU $j/~L  
/** "4Bk  
* @param data \~4IOu  
* @param j +#wh`9[wBt  
* @param i H%&e[PU  
*/ 24; BY'   
private void insertSort(int[] data, int start, int inc) { /l.ox.4z#  
int temp; x[m&ILr  
for(int i=start+inc;i for(int j=i;(j>=inc)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-inc); I}!Er V  
} {wS)M  
} {zmh0c; |  
} #CcC& I :c  
w1q`  
} b$,~S\\c  
>`S $(f  
快速排序: ~L55l2u7  
<5fb, @YN  
package org.rut.util.algorithm.support; MzP q(`W  
)_-EeH  
import org.rut.util.algorithm.SortUtil; Yg<4}l."  
mAZfo53  
/** P-25]-  
* @author treeroot KJQW))%e  
* @since 2006-2-2 #|ILeby  
* @version 1.0 R4 x!b`:i  
*/ K4`)srd  
public class QuickSort implements SortUtil.Sort{ nS$_VJ]~  
O dWZYWj  
/* (non-Javadoc) {OBV+}#  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) ']'V?@H]4  
*/ $T-Pl57  
public void sort(int[] data) { 6.(L8.jv  
quickSort(data,0,data.length-1); 4IUdlb  
} Zk .V   
private void quickSort(int[] data,int i,int j){ Yfa`}hQ  
int pivotIndex=(i+j)/2; +yO^,{8SE  
file://swap dF#`_!4pbf  
SortUtil.swap(data,pivotIndex,j); W81 dLeTZg  
grWmF3c#  
int k=partition(data,i-1,j,data[j]); w /l\p3n  
SortUtil.swap(data,k,j); xJemc3]2  
if((k-i)>1) quickSort(data,i,k-1); O3];1ud  
if((j-k)>1) quickSort(data,k+1,j); 1Bl;.8he.)  
z<h?WsL  
} ?mME^?x Mu  
/** |9&bkojo  
* @param data R8(Bt73  
* @param i +"8-)'  
* @param j OMM5p=2Q  
* @return "$6 .L^9W  
*/ A-GU:B  
private int partition(int[] data, int l, int r,int pivot) { EH2a  
do{ `rQDX<?  
while(data[++l] while((r!=0)%26amp;%26amp;data[--r]>pivot); )o[Jxu'  
SortUtil.swap(data,l,r);  gK Uci  
} 5+yT{,(5  
while(l SortUtil.swap(data,l,r); =|Vm69  
return l; .`; bQh'!  
} 6%Ws>H4@|  
"%[aWb  
} |u5Xi5q.f  
tY>_ +)oi  
改进后的快速排序: 7sglqf>  
X`' @ G  
package org.rut.util.algorithm.support; C(jUM!m  
7!kbe2/]'  
import org.rut.util.algorithm.SortUtil; t,4'\nv*  
}u9wD08x  
/** 'qt+.vd  
* @author treeroot fHc/5uYW  
* @since 2006-2-2 ;mtv  
* @version 1.0 {EL J!o[  
*/ |tua*zEsS  
public class ImprovedQuickSort implements SortUtil.Sort { 2z+-vT%  
\7elqX`.yY  
private static int MAX_STACK_SIZE=4096; \[MQJX,dn  
private static int THRESHOLD=10; g$a 5  
/* (non-Javadoc) '|~L9t  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) r{1xjAT  
*/ vf-cx\y7  
public void sort(int[] data) { 9@{=2 k  
int[] stack=new int[MAX_STACK_SIZE]; _4lhwKYU  
!%,k]m'  
int top=-1; H7&bUt/  
int pivot; '3'*VcL(  
int pivotIndex,l,r; _1EWmHZ?  
PEIf)**0N  
stack[++top]=0; KsR^:_e  
stack[++top]=data.length-1; lQ!)0F  
DwBKqhu  
while(top>0){ gT8%?U:  
int j=stack[top--]; iF!r}fUU6  
int i=stack[top--]; >?yxig:_  
9 U!-Zn!  
pivotIndex=(i+j)/2; *B ]5K{N  
pivot=data[pivotIndex]; s>+,u7EV  
T>e4Og"?  
SortUtil.swap(data,pivotIndex,j); ouO<un  
AC& }8w[>u  
file://partition 1 ^q~NYTK  
l=i-1; 5uxB)Dx)  
r=j; ^+b ??K  
do{ tuWJj^  
while(data[++l] while((r!=0)%26amp;%26amp;(data[--r]>pivot)); ~SD8#;v2  
SortUtil.swap(data,l,r); w>6~ zAh  
} g2t'u4>  
while(l SortUtil.swap(data,l,r); hDAxX= FM  
SortUtil.swap(data,l,j); *!p#1fE  
}2CVA.Qm!  
if((l-i)>THRESHOLD){ Th%2pwvER  
stack[++top]=i; 6Q}WX[| tQ  
stack[++top]=l-1; X@cO`P  
} 2F- ]0kGR|  
if((j-l)>THRESHOLD){ .e|VW)  
stack[++top]=l+1; J3P )oM[  
stack[++top]=j; rM5{R}+;  
} 6B .x=  
[fl x/E  
} ;wF 0s  
file://new InsertSort().sort(data); ~o?(O1QY  
insertSort(data); a3?D@@Qnw  
} ,]* MI"  
/** ~wl 4  
* @param data mYRW/8+g  
*/ a ]~Yi.H  
private void insertSort(int[] data) {  p;k7\7  
int temp; <+iL@'SgF  
for(int i=1;i for(int j=i;(j>0)%26amp;%26amp;(data[j] SortUtil.swap(data,j,j-1); N-cLp}D}WB  
} |y}iOI  
} $CgR~D2G  
} "pLWJvj6-  
)*tV  
} F\U^-/0,  
,ag:w<km  
归并排序: CpG]g>]L&[  
` 0}z ;&:  
package org.rut.util.algorithm.support; ;kv/(veQ1<  
[n!5!/g>j  
import org.rut.util.algorithm.SortUtil; gdKn!; ,w#  
[Kc"L+H\  
/** &]xOjv/?  
* @author treeroot U`w `Cr  
* @since 2006-2-2 ^w1&A 3=6  
* @version 1.0 `of` uB  
*/ ;5TQH_g  
public class MergeSort implements SortUtil.Sort{ m(6SiV=D9  
?9I=XTR  
/* (non-Javadoc) c"H59 jE  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) xLp<G(;  
*/ XNd%3rm,  
public void sort(int[] data) { 5l]G1+  
int[] temp=new int[data.length]; %D9,Femt  
mergeSort(data,temp,0,data.length-1); o:x,zfW  
} ln~;Osb  
M}c gVMW  
private void mergeSort(int[] data,int[] temp,int l,int r){ 5:r*em  
int mid=(l+r)/2; A\IQM^i  
if(l==r) return ; g$P<`.  
mergeSort(data,temp,l,mid); <!m'xOD  
mergeSort(data,temp,mid+1,r); E]<Ce;Vj  
for(int i=l;i<=r;i++){ BZr$x8%ki  
temp=data; Q(gc(bJV  
} S]#xG+$<  
int i1=l; oMNgyAp^  
int i2=mid+1; Nu]& ?  
for(int cur=l;cur<=r;cur++){ X_tc\}I]  
if(i1==mid+1) \ f6@B:?y  
data[cur]=temp[i2++]; t<%S_J\  
else if(i2>r) q5D_bm7,3  
data[cur]=temp[i1++]; `mt. =d  
else if(temp[i1] data[cur]=temp[i1++]; njoU0f1`  
else ) }.<lSw  
data[cur]=temp[i2++]; =iZj&B X  
} ,k=1 '7d  
} yCt,-mz!z  
dYP-QUM$7  
} ~l SdWUk>  
uOU?-WtPz  
改进后的归并排序: miCW(mbO8  
)4@La&  
package org.rut.util.algorithm.support; ;3 |Z}P  
"B 9aJo  
import org.rut.util.algorithm.SortUtil; l{u2W$8  
3\~ RWoB0u  
/** ud}B#{6  
* @author treeroot 1_Ag:> #X  
* @since 2006-2-2 Z6Kw'3  
* @version 1.0 E/[<} ./  
*/ y;1 'hP&  
public class ImprovedMergeSort implements SortUtil.Sort { n@ rphJb  
oI/jGyY;  
private static final int THRESHOLD = 10; LEJ8 .z6$  
9"%ot=)  
/* ;uK">L[u'  
* (non-Javadoc) nGvWlx  
* `EjPy>kM  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) Fy!-1N9|l  
*/ gXzp$#  
public void sort(int[] data) { aLKvl~s;m  
int[] temp=new int[data.length]; e.<y-b?  
mergeSort(data,temp,0,data.length-1); 6gSo>F4=  
} $: %U`46%s  
O5;$cP:  
private void mergeSort(int[] data, int[] temp, int l, int r) { luYa+E0  
int i, j, k; LBs:O*;  
int mid = (l + r) / 2;  | D?lF  
if (l == r) a`:ag~op@&  
return; icnc5G  
if ((mid - l) >= THRESHOLD) NDt +m  
mergeSort(data, temp, l, mid); TGe)%jZ  
else fQ@k$W\  
insertSort(data, l, mid - l + 1); Xgs 31#K  
if ((r - mid) > THRESHOLD) AnUOv 2  
mergeSort(data, temp, mid + 1, r); Z\@m_ /g  
else I,pI2  
insertSort(data, mid + 1, r - mid); r'C(+E (  
hj8S#  
for (i = l; i <= mid; i++) { /!//i^  
temp = data; 7j <:hF~  
} k'hJ@ 6eKS  
for (j = 1; j <= r - mid; j++) { Gx.iZOOH/  
temp[r - j + 1] = data[j + mid]; !VF.=\iH/  
} g/2eY$6Z  
int a = temp[l]; :Jz@`s1n  
int b = temp[r]; AzwG_XgM)  
for (i = l, j = r, k = l; k <= r; k++) { ML|O2e  
if (a < b) { [kjmEMF9i  
data[k] = temp[i++]; SW^/\cJ^  
a = temp; 5NT?A,r"  
} else { HRPNZ!B  
data[k] = temp[j--]; h 9B^U?<wT  
b = temp[j]; "AAzBWd/  
} qxR7;/@j)  
} :W++`f&  
} in/ITy-  
0VOj,)K=  
/** T<\!7 RnLc  
* @param data G31??L:<  
* @param l _ zh>q4M  
* @param i Xw|t.0  
*/ ~gjREl,+D#  
private void insertSort(int[] data, int start, int len) { H /kSFf{  
for(int i=start+1;i for(int j=i;(j>start) %26amp;%26amp; data[j] SortUtil.swap(data,j,j-1); +Je(]b @  
} 5,pKv  
} :Ur=}@Dj  
} ]nEZ Q+F  
} ?\eq!bu  
v@8 =u4  
堆排序: n<. T6  
quvdm68  
package org.rut.util.algorithm.support; 7i,Z c]  
kCq]#e~wq  
import org.rut.util.algorithm.SortUtil; &vy/Vd  
) Apg  
/** yLo{^4a.  
* @author treeroot ##6_kcL:6G  
* @since 2006-2-2 7xmyjy%c  
* @version 1.0 :n4X>YL)  
*/ :4ndU:.L  
public class HeapSort implements SortUtil.Sort{  3e<FlH{  
FzDZ<dJ  
/* (non-Javadoc) |#r [{2sS  
* @see org.rut.util.algorithm.SortUtil.Sort#sort(int[]) T vEN0RV2  
*/ (Nky?*  
public void sort(int[] data) { #\Q{?F!4  
MaxHeap h=new MaxHeap(); %/86}DCfE?  
h.init(data); nmLn]U=  
for(int i=0;i h.remove(); 5K~kzR L$r  
System.arraycopy(h.queue,1,data,0,data.length); ;U +;NsCH  
} q66+x)  
LOD'iiH6  
private static class MaxHeap{ kg>Ymo.  
| Q Y_ci  
void init(int[] data){ 3M nm2*\  
this.queue=new int[data.length+1]; 1lxsj{>U  
for(int i=0;i queue[++size]=data; tPT\uD#t  
fixUp(size); GQNs:oRJ'  
} ^Ms)T3dM  
} m]1= o7  
S<hj6A  
private int size=0; rb/m;8v>  
0]F'k8yLN  
private int[] queue; nbnbG0r:  
o4)^U t+  
public int get() { wW7W+,{o  
return queue[1]; pP4i0mO{Dv  
} N@M(Iw  
sGf\!w  
public void remove() { _L6WbRu|  
SortUtil.swap(queue,1,size--); MNE{mV(  
fixDown(1); ^8mF0K&  
} X[frL)k]  
file://fixdown blwdcdh  
private void fixDown(int k) { o8:K6y  
int j; c !$ 8>  
while ((j = k << 1) <= size) { -XVC,.Ly  
if (j < size %26amp;%26amp; queue[j] j++; hSgfp  
if (queue[k]>queue[j]) file://不用交换 {[~ !6&2(k  
break; +fgF &.  
SortUtil.swap(queue,j,k); X7I"WC1ncz  
k = j; <p48?+K9  
} ~zklrBn&  
} +\`D1d@  
private void fixUp(int k) { t|gEMDGa3  
while (k > 1) { p0KkPE">p4  
int j = k >> 1; 2V}tDN7c  
if (queue[j]>queue[k]) q;T3bxp+  
break; |g5B==KI  
SortUtil.swap(queue,j,k); ;;zKHS  
k = j; U&fOsx?"  
} U/ncD F%C  
} 6]i"lqb  
8{5Y%InL  
} Hev S}L  
vG(Gs=.U  
} iOB]72dh  
AsRS7V  
SortUtil: SR 9 Cl  
i$) `U]  
package org.rut.util.algorithm; q16RPqfT  
_P!J0  
import org.rut.util.algorithm.support.BubbleSort; `.z;.&x  
import org.rut.util.algorithm.support.HeapSort; rp sq.n   
import org.rut.util.algorithm.support.ImprovedMergeSort; EDR;" G(N  
import org.rut.util.algorithm.support.ImprovedQuickSort; tJ>OZ  
import org.rut.util.algorithm.support.InsertSort; v;S7i>\  
import org.rut.util.algorithm.support.MergeSort; {:&t;5qz^  
import org.rut.util.algorithm.support.QuickSort; JM5 w`=  
import org.rut.util.algorithm.support.SelectionSort; p @@TOS  
import org.rut.util.algorithm.support.ShellSort; G: FP9  
%nJ^0X_]  
/** t[B\'f!  
* @author treeroot pYo]lO  
* @since 2006-2-2 ~X^L3=!vf  
* @version 1.0 *rO#UE2  
*/ V#?GDe}[  
public class SortUtil { r;`6ML[5Vx  
public final static int INSERT = 1; ; d1\2H  
public final static int BUBBLE = 2; D6,rb 9  
public final static int SELECTION = 3; 4@PH5z  
public final static int SHELL = 4; bk E4{P"  
public final static int QUICK = 5; }2Y:#{m  
public final static int IMPROVED_QUICK = 6; &pS <4  
public final static int MERGE = 7; uBLI!N-G  
public final static int IMPROVED_MERGE = 8; nB?$W4  
public final static int HEAP = 9; B\a-Q,Wf  
4,m aA  
public static void sort(int[] data) { <4z |"(  
sort(data, IMPROVED_QUICK); B$aA=+<S  
} :E/]Bjq$;  
private static String[] name={ ^[}^+  
"insert", "bubble", "selection", "shell", "quick", "improved_quick", "merge", "improved_merge", "heap" UY*3b<F}  
};  k%V#{t.  
Z~^)B8  
private static Sort[] impl=new Sort[]{ .g.v  
new InsertSort(), 'rJkxU{  
new BubbleSort(), A4.Q \0  
new SelectionSort(), dxkq*  
new ShellSort(), j nvi_Rodm  
new QuickSort(), =Mb!&qq  
new ImprovedQuickSort(), ]}2+yK  
new MergeSort(), XVjs0/5b  
new ImprovedMergeSort(), *.wX9g9\  
new HeapSort() K &m`1f  
}; umrfA  
Bk&ry)`gD  
public static String toString(int algorithm){ dEU +\NY  
return name[algorithm-1]; !(PAUW S@  
} NF <|3|  
8 /1 sy.R  
public static void sort(int[] data, int algorithm) { Zr,:i MPZ  
impl[algorithm-1].sort(data); G2Eke;  
} 59:Xu%Hp  
'Z#8]YP`  
public static interface Sort { z{U2K '  
public void sort(int[] data); (]0JI1 d  
} 8^CdE*a  
8KRm>-H)  
public static void swap(int[] data, int i, int j) { {)]5o| Hx  
int temp = data; GGcN aW'  
data = data[j]; 6@?4z Rkz  
data[j] = temp; O,"4HZG  
} Q?KWiFA}'  
} FU9q|!2Y  
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 或 注册
如果您在写长篇帖子又不马上发表,建议存为草稿
认证码:
验证问题:
10+5=?,请输入中文答案:十五