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void zigzag(int* outputArr, int *ele, int step, int *corEle, int eleNum, int type){

    if(step == eleNum){
        //可能要print
        return;
    }

    //要在哪插入回朔的點


    for(int i = 0; i < eleNum; i++){
        if(step == 0){
            if(corEle[i] == 0){
                outputArr[i] = ele[i];
                corEle[i] = 1;
                step++;
                zigzag(outputArr, ele, step, corEle, eleNum, 0);
                corEle[i] = 0;
            }
        }
        else if(step == 1){
            if(corEle[i] == 0){
                if(ele[i] > ele[0]){
                    type = 1;
                    outputArr[i] = ele[i];
                    corEle[i] = 1;
                    step++;
                    zigzag(outputArr, ele, step, corEle, eleNum, type);
                    corEle[i] = 0;
                }
                else if(ele[i] < ele[0]){
                    type = 2;
                    outputArr[i] = ele[i];
                    corEle[i] = 1;
                    step++;
                    zigzag(outputArr, ele, step, corEle, eleNum, type);
                    corEle[i] = 0;
                }
                
            }
        }
        else if(step > 1){
            if(step % 2 == 0){
                if(type == 1){
                    
                }
                else if(type == 2){

                }
            }
            else if(step % 2 == 1){
                if(type == 1){

                }
                else if(type == 2){
                    
                }
            }
        }
        
    }
    

    
}
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