var arr = [1,3,2,7,5,9,11];
function sum(arr){ var total = 0;
var fun = function(arrs){ if(arrs.length > 0){ total += arrs.pop(); fun(arrs); } } fun(arr); return total;}
转载于:https://www.cnblogs.com/dxa304814183/p/5571980.html
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