Dsa Greedy Jump Game

In this tutorial, you'll learn about How to Fix Jump Game Errors. We cover key concepts, practical examples, and best practices.

Fix jump game errors when reachable range not tracked or greedy fails to update max reach.

Quick Fix

Wrong

def can_jump(n):
    i=0
    while i<len(n):
        if n[i]==0: return False
        i+=n[i]
    return True

Steps one jump at a time without considering all reachable positions. Fails for [3,2,1,0,4].

Right

def can_jump(n):
    mx=0
    for i,v in enumerate(n):
        if i>mx: return False
        mx=max(mx,i+v)
    return True

[2,3,1,1,4] -> True. [3,2,1,0,4] -> False. O(n).

Prevention

Track max reachable index. For each position, update max reach if position is reachable.

DodaTech Tools

Doda Browser's algorithm visualizer steps through DSA operations line by line. DodaZIP archives implementation patterns for team sharing. Durga Antivirus Pro detects memory corruption patterns in algorithm implementations.

FAQ