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数组分割算法JavaScript

问题:

编写一个函数, 把一个数组 arr 按照指定的数组大小 size 分割成若干个数组块。

示例:

例如:chunk([1,2,3,4],2)=[[1,2],[3,4]];

chunk([1,2,3,4,5],2)=[[1,2],[3,4],[5]];

解答:

function chunk(arr, size) {
// Break it up.
    var diode = [];
    var count = Math.ceil(arr.length / size);
    var arrIndex = 0;
    var tempArrIndex = 0;
    for(var subArrTime = 0; subArrTime < count; subArrTime++){var subArray = new Array(size);
        tempArrIndex = arrIndex + size;
        for(var x = 0; arrIndex < tempArrIndex; arrIndex++,x++){if(arrIndex < arr.length){subArray[x] = arr[arrIndex];
            }
        }
        arrIndex = tempArrIndex;
        diode.push(subArray);
        
    }
    return diode;
    
    
}

chunk(["a", "b", "c", "d"], 2);

链接:

https://www.w3cschool.cn/code…

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