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var canJump = function(nums){let cover = 0;for(let i=0;i<nums.length;i++){if(i<=cover){cover = Math.max(nums[i]+i,cover);if(cover >=nums.length-1){return true;}}}}

var canJump = function(nums){let cover = 0;for(let i=0;i<nums.length;i++){if(i<=cover){cover = Math.max(nums[i]+i,cover);if(cover >=nums.length-1){return true;}}}}