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Single iteration without set java:
public static String pangrams(String s) { // Write your code here int c = 26; int dp[] = new int[27]; for(int i = 0; i < s.length(); i++){ char ch = s.charAt(i); ch = Character.toLowerCase(ch); int idx = ch - 'a'; //System.out.println(idx); if(idx < 0 || idx >= 26) continue; dp[idx]++; if(dp[idx] > 1) continue; c--; if(c == 0) return "pangram"; } return "not pangram"; }
Pangrams
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Single iteration without set java: